In this Version 6.25 (16.06.2014) :

  1. Main improvement about ModuleLayout management: 

  2. All tables shown on a single plane - possibility of moving them
  3. Working table directly selectable on the 3D view 

  4. Possible saving as an image  (BMP, JPG, or PNG: transparent) 

  5. Print of the whole ModuleLayout definition

  6. Several Improvements/Optimizations inthe dialog and elaboration 

  7. Export of results in the Report preview: Loss diagram also exportable

  8. Rewrote the batch mode, improvements

  9. Big shading scenes: general dialog speed optimizations

  10. Optimization of shading factor calculation was not activeted by default

In Version 6.24 (21.05.2014) :

  1. Report preview: new possibility of modifying units and language.

  2. Report preview: possibility of "Copying" the chosen results in the clipboard for analysis and versions comparisons in EXCEL.

  3. Error in Batch mode, when redefining the number of inverters.

  4. Printer choice: always takes the Default printer: fixed.

  5. Many bugs fixes after implementing the tool for reporting runtime errors.

In Version 6.23 (01.05.2014) :

  1. Mixed-orientation systems: sometimes error in the simulation => Inverter loss may be underevaluated by around -0.3%..

  2. Tracking 1-axis with not south-axis: some incoherences and modif. impossibilities in the definition dialog (not affecting simulation results).

  3. Prevent opening the software twice simultaneously, which may produce some conflicts.

  4. Grid Input/Output plots: showed variable E_Avail instead of E_Grid.

  5. Several minor dialog and display errors or improvements.

  6. Database update.

In Version 6.22 (24.03.2014) :

  1. Meteo conversion: import of year in the DD|MM|hh|mm format.

  2. SolarEdge: do not check number of strings or modules.

  3. 3D tool: fix window which could freeze.

  4. Added a new reporting tool in case PVsyst is crashing.

In Version 6.21 (13.03.2014) :

  1. Error when displaying some 3D scenes - 3D scene not written on the report.

  2. Backtracking definition management: sometimes choice not accepted.

In Version 6.20 (10.03.2014) :

  1. Import ASCII meteo files: complete revision of the DST management, included then DST dates for the USA. Also valid for years not beginning in January, and southern hemisphere.

  2. Default component choice: available now.

  3. Report: some little problems solved (fonts on second page of parameters).

  4. Module Layout electrical calculations: simulation error in some special cases => alterate the Inverter losses.

  5. Improved speed when clicking on "Create variant from..." in the main project dialog.

  6. Improved logo quality on printed report.

In Version 6.19 (11.02.2014) :

  1. Display of the Modules and they electrical attribution by colors (by Module Layout) directly in the Perspective view.

  2. Save this perspective view as a BMP, JPG, PNG or SVG image for use in other drawing softwares.

  3. Report improvement: avoid long component name's overwriting, Long calculation version titles on 2 lines.

  4. Import ASCII meteo and data files: error messages and dialog improvements, reads dates without specified years; DataMeas: reads multi-fields.

  5. Error in simulation of shading with thin objects: shading loss overevaluated.

  6. Error in electrical shading losses: loss correction on voltage instead of current => only effect: loss if the voltage becomes below the Inverter VmppMin .

  7. Unlimited sheds: parameter not well read on file => azimut aberrant value.

  8. Errors in mixed orientations: little effects on shadings with horizon.

  9. Irradiance and Temperature loss not well displayed (but correct calculation).

In Version 6.18 (31.01.2014) :

  1. Definition of 3D fields: now possible directly by specifying the number of modules in width and in length. Polygonal 3D field: by positioning each module individually with mouse.

  2. Module Layout tool: you can now have a side-view of the 3D perspective with visualization of the edited table in red and choosing the table to be edited in the 3D drawing.

  3. Tables of Hourly values for each month, for any variable of the simulation.

  4. Update of the program: performs a back-up of all user's files, allowing to retrieve the simulations with old versions.

  5. Off-line deactivation of the license: bug fixed.

  6. Update of the ModuleLayout for fields added in the 3D part: bug fixed.

  7. Import of ASCII meteo files: warnings improved and bugs fixed.

  8. Import of ASCII files of measured data: multi-fields now working.

  9. Grid power limitation: bug fixed when defining several sub-arrays.

In Version 6.17 (10.01.2014) :

  1. Error since V 6.14: Electric loss (Module Layout option) not  calculated.

  2. Shading factor table according to strings not written on file (recomputed).

  3. Report: first page not complete for Stand-alone systems.

  4. Meteo monthly tables: line of yearly values erroneous.

In Version 6.16 (03.01.2014) :

  1. Report: Parameters may be printed on more than 2 pages.

  2. Report: Visualization of a saved 3D scene improved. Check of this visualization in the 3D editor.

  3. Sometimes erronous value in the Array wiring resistance, fixed. Some logs for tracking this errors in V 6.14 crashed the program.

In Version 6.15 (20.12.2013) :

  1. Erroneous values displayed in the "Results" dialog.

  2. Some improvemebnts in the Multi-orientation warnings and the report.

  3. Helios3D  now working with Multi-orientation.

  4. PV module definition from Low-light data: crashed.

  5. Summary dialog: copy to clipboard.

  6. Value of the Wiring resistance is sometimes modified to aberrant values. We didn't yet identify the origin of this random (and rare) problem, but we protected the simulation by asking the user for correcting the parameter..

  7. Fixed failure when reading license after the update on some environements.

In Version 6.14 (16.12.2013) :

  1. Problems fixed with shadings - crashed in the "Shadings" dialog.

  2. Problems fixed concerning sheds with not null Baseslope.

  3. Infinite loop in some calculations (Shadings "According to strings").

  4. Shadings "According to strings" not well computed when linear shadings < 0.5%.

  5. Regulator (controller) dialog improved when modifying the nominal power.

In Version 6.13 (09.12.2013) :

  1. Main implementation: Multi-orientation.

  2. Possibility of defining up to 8 different orientations.

  3. Independent shading calculation for each orientation.

  4. Heterogeneous fields: replaced by this Multi-orientation option.

  5. Removed restrictions on the orientation differences and nb of sub-arrays.

  6. Seasonal tilt: now possible with 3D shading calculations.

  7. Electrical Sub-array: now with Name and eventual Orientation definition.

  8. "System summary" new window, available from different places for a general overview of the params defined for the calculation version.

  9. Gives a list of: Orientations, sub-arrays, shading 3D fields defined.

  10. Identifies the uncompatibilities between these 3 entities (orientation and areas matching), provides cibled warnings when necessary.

  11. Deep revision on the verification on system's compatibilities.

  12. Shading and IAM factor on Albedo: improved the calculations (integral model).

  13. Focusing CPV systems: errors in the loss diagram view (not in the results).

  14. Unavailability loss: not stored correctly with the calculation version.

  15. SolarGIS import and Meteonorm synthetic generation: sometimes crashed.

  16. Simulation ASCII files: crashed when more than 30 parameters defined.

  17. Batch simulations: inverter changes not taken into account.

  18. New tutorial about "My first Project", "Meteo Management", "Linear shadings".

  19. Meteo import: fixed Internet Explorer error displayed in importation tool.

  20. Meteonorm: fixed crash when generating data based on Solargis data.

  21. Dialog fonts: added an application setting to change font dynamically for all dialogs.

  22. MSI installation file: fixed signature issue in Internet Explorer 9/10.

  23. Simulation: improved simulation speed (20%).

  24. Project: fixed error when reading list of projects in File >> Export projects.

  25. License: added dialogs to warn and show deactivation link for off-line license transfer.

  26. License: fixed error when reading license when there are more than one hard disk.

In Version 6.12 (24.09.2013) :

  1. SOLARGIS files: complete tool for direct import of all their products: Specific year, TMY, monthly averages or pluri-annual files

  2. PVGIS import: the negative Longitude sign is not read correctly

  3. PV modules import:  PHOTON site has changed, updated accordingly

  4. Simple tool for direct Import/Export of single projects

  5. Light Soaking, LID or IAM defined in the module specifications: directly taken into account in the detailed losses

  6. Module Layout: fields not refreshed when modifying the 3D shading scene

  7. Wind velocity monthly specifications overwritten by Meteonorm

  8. Simulation with shadings: sometimes crashes at beginning (error#9)

  9. Sometimes errors in shading factor when several sub-arrays

  10. Import ASCII meteo files: year 2000 not recognized as leap year

  11. Definition of project's site: sometimes erases Meteo file (with POA data)

  12. Logo display on report bug (size): fixed

In Version 6.11 (26.08.2013) :

  1. Tool for P50-P90 evaluation => new page on the report

  2. Possibility of defining a Power Factor for the grid requirement.

  3. Possibility of defining a Grid Power limitation (incl. with Power factor).

  4. Checked all tracking options for southern hemisphere.

  5. Shading factor optimizations: fixed for very long objects or planes. Improved for Building Objects.

  6. Error#9 when defining Tracking without defining 3D scene: fixed.

  7. Error with 3D Polygonal fields: fixed

  8. Writing unavailability parameters on file

  9. Error when defining load profile by an hourly file: fixed. Improved hourly load plot

  10. Importing meteonorm data: sometimes kept previous GHI definition

  11. SolarEdge: fractional MPPT didn't work anymore

  12. Found deep error sometimes in the Synthetic Hourly dialog (=> Site
    corrupted). may explain many unidentified crashes of the software in diverse situations

  13. Securized messages when a VCi file is invalid

  14. Batchmode: Backtracking changes not taken into account

  15. Batchmode: 3D scene not actualized with some parameter changes

  16. System verifications: some possible errors not accounted (e.g. Module sizes)

  17. Import/export projects and components improved.

  18. Fixed issue with latest available Pvsyst version.

  19. Added proxy support for internet access (Preferences >> Web).

  20. Added window autoscrolling for small screens.

  21. Enabled unicode support (for ex. Asian characters) for user data file paths.

In Version 6.10 (23.07.2013) :

  1. Shading on diffuse factors not calculated for other systems than tracking - Don't use V6.0.9 !

  2. GoogleMap tool has changed, search by Map not working anymore: update of PVsyst accordingly.

  3. Diffuse shading factors for tracking systems: were computed with Shading Factor Table with tracking => error Backtracking now calculated for several tracker positions.

  4. Pump definition: dialog for definitions acc. to efficiency not working. Included a new line of contrifugal industrial pumps in the database.

  5. Little updates in the importation of Meteo files, esp Satellight.

  6. Corrected Horizon in Meteonorm, bad defined for southern hemisphere.

In Version 6.09 (19.07.2013) :

  1. GoogleMap tool has changed, search by Map not working anymore: update of PVsyst accordingly.

  2. Diffuse shading factors for tracking systems: were computed with Shading Factor Table with tracking => error Backtracking now calculated for several tracker positions.

  3. Pump definition: dialog for definitions acc. to efficiency not working. Included a new line of contrifugal industrial pumps in the database.

  4. Little updates in the importation of Meteo files, esp Satellight.

  5. Corrected Horizon in Meteonorm, bad defined for southern hemisphere.

In Version 6.08 (27.06.2013) :

  1. LID and Light-soaking loss parameter not written on the file.

  2. Securization of the ohmic loss dialog (sometimes crashes).

  3. Simulation with voltage limit for getting full Pmpp: error fixed.

  4. Report: Nb of inverters not correct with unbalanced MPPT suppression of the NOCT info line  (not relevant).

  5. Synthetic generation: Diffuse renormalization to input values not effective Wind velocities created by Meteonorm without input data.

  6. Satellight import: error in the avaraging over 5 years.

  7. TMY2 import: modif for accepting little imperfections to input format.

  8. Stand-alone and pumping systems: error at simulation beginning.

  9. System sizing, Shading dialogs: sometimes crashed.

  10. Meteo data import: accept solarimeter azimuth over ±90°.

  11. Logo not visible in report: fixed.

In Version 6.07 (29.05.2013) :

  1. TMY3 import: still errors with some locations.

  2. Satellight meteo data: added an automatic  6 minutes time shift.

  3. In Project's site definition: securized copy  Meteo => site.

  4. Master/Slave operation: fixed in simulation and module layout.

  5. SolarEdge, fractional inputs: fixed efficiency and overload.

  6. Helios3D import for southern hemisphere: still some angle definitions errors.

  7. Sometimes empty meteo data: additional warnings, securized System definition.

In Version 6.06 (26.04.2013) :

  1. TMY3 import: extended accepted separator to semicolon => possibility of modifying CSV file in EXCEL.

  2. Shading factor "according to string" calculation: sometimes error when 2 shades in the same rectangle.

  3. Solaredgs systems with fractional inverter: still an error in the simulation.

  4. Heterogeneous fields with only mixed field: didn't appear in choices.

  5. Hidden parameters edition: "Miscellaneous" topic had disappeared.

  6. ModuleLayout: default value for nb. of diodes now according to module def.

  7. Fixed character issues in simulation report.

In Version 6.05 (12.04.2013) :

  1. Systems with overload: calculation error in some cases (=> over-evaluated loss).

  2. Shadings with partition in module strings: sometimes hangs up.

  3. Import TMY3 format: extended possibilities for other sources (SAM in India). Now possible to import specific years, leap years, data source modifiable.

  4. Import of meteo ASCII files: extended to some very strange data formats.

  5. Import of Standard PVsyst format: added a parameter for time stamp hour shift. Adapted for importing DHI + DNI measurements.

  6. Tracking frames: extended accepted angle limits.

  7. Inverter definition dialog: sometimes crashed.

  8. Meteo data tables: Last day missing.

  9. New installation per-machine.

In Version 6.04 (21.03.2013) :

  1. Slight error in the module database;

  2. Import of PVGIS data: adapted for Internet Explorer 10;

  3. Solaredgs systems with fractional inverter inputs did'nt work;

  4. Display of  IAMLoss and ShdLoss values.

In Version 6.03 (19.03.2013) :

  1. Import Satel-light data: updated, the original source format has been changed.

  2. Low-light data specifications for PV modules: improved the dialog

  3. Import of ASCII meteo files: error with new Meteo files definition of V6.

  4. Database update.

In Version 6.02 (28.02.2013) :

  1. Mismatch tool: crash if PV module of the project not yet defined calculation on Inverter inputs, not the full sub-array

  2. Batch Mode tool: new parameters, update creation of hourly files

  3. File creation for simulation: memorization of the specified variables

  4. Project: displaced several settings of the Hidden parameters, specific to the project, to the project's settings

  5. Project: Add. settings: choice for Vmax IEC or UL  

  6. Oportunity of using muVoc specified instead of from model.

New Version 6.0 BETA (05.02.2013)

 

  1. "Meteonorm Inside"

     

    - Direct search of any location on the earth, using the well-known GoogleMap tool.
    - Immediately get the monthly meteo values for any site, using the interpolating possibilities of Meteonorm 6.1.
    - Synthetic generation of hourly values uses now the Meteonorm algorithm, improved by respect to the old PVsyst algorithm.
    - Included import of meteo values from new databases, for example SolarAnywhere (SUNY model) satellite recent data covering the whole USA.
    - Transposition model on tilted planes: Perez model now proposed as default instead of Hay, leqading to an increase of 0
    - 2% yearly sum according to climate and orientation.

     

     

  2. New Project management and simulation process

     

    - New Project management Dashboard, with direct access to all parameters, simulation and results in a single dialog.
    - Improved project management: copy, saving, transfers of calculation versions from projects to projects, copy of full projects.
    - Losses: new organization of the loss diagram. New losses like LID, System unavailability, Inverter auxiliary or night consumption, Light-soaking gains for CIS.
    - Batch mode for parametric studies: allowing to vary parameters in an EXCEL document, and get chosen simulation results of multiple runs as a table.

     

     

  3. Improved shading calculations

     

    - Direct shading factor calculation during the simulation (avoiding the interpolation uncertainties in the shading factor table).
    - Optimization of the calculation of the shading factor, allowing calculations of big PV plants without limitation to some hundredth of trows or trackers (factor of 10 on the speed).
    - Plants following the terrain, imported by Helios3D: analysis of the spread of orientations, management of the orientation average.

     

     

  4. Detailed electrical shading losses

     

    - Refinement of the "module layout" part, which allows to define the position of each PV module on the areas ("tables") defined in the 3D shading tool.
    - Modules arrangement in portrait or landscape, sub-modules in length or width within each module.
    - Attribution of each module to a given string and inverter.
    - Detailed calculation of the I/V characteristics under partial shadings in each Inverter input, either as pedagogic plot, and during the simulation for the determination of the "electrical losses" due to the shading mismatch.

     

     

  5. PV modules

     

    - Tools for specifiying low-light performances, and adjustment of the Rserie parameter accordingly. Low-light efficiencies may be included in the parameters in the database.
    - Modification of the default values for Gamma, when Rseries is not explicitely defined by the manufacturer, giving significant higher yields of 2-3%.
    - Import of a measured I/V curve for the establishment of the model's parameters. - Sandia model implementation, and comparison with the one-diode model.
    - New parameters: IAM profile in the module's parameters, Vmax(UL) for use in US, full tolerance definition, LID for crystalline and Light-soaking for CIS.
    - Easy choice of modules by manufacturers.

     

     

  6. Inverters

     

    - Multi-MPPT with unbalanced inputs
    - define main and secondary inputs.
    - Additional parameters: transformer specification, CEC average efficiency for US, auxiliary and night losses.
    - Easy choice of inverters by manufacturers.

     

     

  7. Software Installation and Background

     

    - New file organization, with clear distinction between internal database and custom files.
    - New data management, easy copy of the the full custom data set from previous installations, no problems of Administration rights anymore.
    - Certified installing package by PVsyst SA, registered in Windows.
    - Easy automatic updates.
    - New protection management.

     

 

 

************************************************************************************************

In this Version 5.74 (16.06.2014) :

  1. Large Database update (PV modules and Inverters)

  2. Import meteo data: also possible for Northern planes (+/- 180°)

  3. Stand-alone projects: export tool did't include the battery

  4. Sometimes error in User's load: ILoadMax too high (simultaneïty factor).

In Version 5.73 (30.01.2014) :

  1. Possibility of reading *.PAN and *.OND files from Version 6

  2. Conversion of ASCII files: revision of some features and error messages (multiple fields in DAM files, dates wthout year interpretations)

  3. Heterogeneous fields: bad writing of second azimuth parameter (only in V5.72)

  4. Southern hemisphere, mouse dragging: sometimes direction error.

In Version 5.72 (09.12.2013) :

  1. SolarEdge fractional MPPT input

  2. Simulation ASCII files: crashes if more than 30 variables required

  3. Seasonal tilt option: winter months not memorized

  4. Grid-system presizing: error in active area

  5. PV module import from PHOTON: tolerance value incorrect (*100)

In Version 5.71 (24.09.2013) :

  1. PVGIS import: the negative Longitude sign is not read correctly

  2. PV modules import:  PHOTON site has changed, updated accordingly

  3. Import ASCII meteo files: year 2000 not recognized as leap year

In Version 5.70 (26.08.2013) :

  1. Database update.

In Version 5.69 (19.07.2013) :

  1. Pump definition: not working with efficiency as specified parameter defined 25 new centrifugal pumps in the database.

  2. Horizon definition in Meteonorm: update acc. to azimut definition.

In Version 5.68 (27.06.2013) :

  1. Shading factor according to modules: sometimes freezes.

  2. Simulation with inverters specifying VmppMin for getting the nominal power:little calculation error.

In Version 5.67 (28.05.2013) :

  1. TMY3 import: now possible to modify files in EXCEL, some errors removed.

  2. Inverter overpower losses: some random errors (when Vmpp < Vmppmin).

  3. Shading factor according to modules: sometimes hanged-up.

In Version 5.66 (12.04.2013) :

  1. SolarEdge systems: error when using fractional (partitioned) inputs.

  2. PVGIS data: the format has changed with Explorer 10 (Windows 8).

  3. Meteo data tables: the last day was not printed.

  4. TMY3 format reading: extended to not-TMY (real years), also with leap years.

  5. ASCII import: extended for reading some very strange data format.

  6. PVsyst standard format: defined a new tag for the Time stamp hourly shift. Added possibility of importing  DHI+DNI data.

In Version 5.65 (19.03.2013) :

  1. Satel-light import: update, the source file format has changed.

In Version 5.64 (29.01.2013) :

  1. Financial balance with net-metering: error when defining consumption tariff

  2. Shadings acc. to module strings: little error in some rare cases

In Version 5.63 (21.12.2012) :

  1. Revision of the synthetic generation of temperatures
    (erroneous results in very unsolated climates in Southern hemisphere)

  2. PV module import from PHOTON database: didn't work with some international windows settings

  3. Comparison Measurements-Simulation tool: error since version 5.60 prevented simulation

  4. Helioclim data import: timezone not defined => proposed acc. to Longitude

  5. Path for data specified with diacritic characters in Czech MsWindows
    => suppressed diacritic characters in the datapath

  6. Securized initialisation procedure of the program.
    In some installations (lack of Windows reading rights), the program crashed.  

In Version 5.62 (27.11.2012) :

  1. Error in the calculation of DiffEff and Alb_Eff (info only: This is not used in the simulation).

  2. Database update

In Version 5.61 (12.11.2012) :

  1. Pumping systems: improved pre-sizing, especially in limit cases (worked fine - Securized calculations in some exotic situations,
    Corrected some little display errors.

  2. Stand-alone systems: since version 5.54, sometimes the battery used by the
    simulation doesn't correspond to the one chosen in the "system" part;
    then returning in "System" leaves the battery choice blank.

  3. PVGIS import for African data in southern hemisphere:
    error of the longitude sign => problems with time zone definition.

  4. Meteo checking tool: sometimes graph choice error with incomplete years.

  5. Simulation hourly graphs: units sometimes not displayed (especially Ah).

In Version 5.60 (05.10.2012) :

  1. Measured data: generates 1 full year (with 0 values) when only one day data (worked fine - generated just the available data -  for 2 days or more

  2. Measured array temperature checkbox: sometimes masked if Meteo of the project is changed

  3. Triphased voltage drop after inverter: evaluation error 15% (display only)

  4. Import of POA values: possibility of increasing the acceptance when the clear day model is overcome (specified in the hidden parameters)

  5. Lower limit of monthly ambient temperatures: now in Hidden parameters

  6. Report: the model used (Hay/Perez) doesnt appear correctly mete os changed.

  7. Loss diagram: opportunity of increasing number of decimals of the % losses

In Version 5.59 (18.07.2012) :

  1. Error freezing the program at PV module or inverter opening

In Version 5.58 (16.07.2012) :

  1. PHOTON database: the site URL and format has changed  =>
    update for reading by  Firefox, Chrome, Explorer

  2. PVGIS import: doesn't work anymore with Firefox 13 (modif. data format)

  3. Very undersized inverters: when Vmpp < VmppMin(Inv), overpower loss not accounted correctly => Output powers may be > Pnon(AC)  (marginal effect)

  4. Single amorphous modules model: modif Vbi for very high Vmpp

  5. Tracking tilted axis in Southern hemisphere: axis azimuth not correct

  6. Helios3D import in Southern hemisphere: Base slope sign not corect

  7. MeteoConversion process: abort when all dates are invalid (not read correctly)

  8. Regulator dialog: improved warning messages management

In Version 5.57 (29.05.2012) :

  1. Tracking, error when axis azim = 180°
       => Autorize negative tilt of axis,

  2. a:Si-H (single) modules: model modification for very high Vmp 

  3. Read Helios3D:  parameter correction for southern hemisphere

  4. Import of Meteo files: add date format possibilities

  5. Load daily and monthly definitions: dialog and report errors

  6. Transformer losses: values disappeared in some special cases

  7. Some modified inverters in the database: read error for effic. 3 voltages

In Version 5.56 (16.04.2012) :

  1. Read Meteonorm: problems (monthly irrad=0) near polar circle

  2. Inverter 3-voltages efficiency: OK if 2 voltages identical 

  3. Inverter and PVModule export to EXCEL:
         decimal dot or comma acc. to international settings

  4. Monthly tables: errors in units for Yr and Ya

  5. Report: corrections (economics) and improvements (shadings)

In Version 5.55 (21.02.2012) :

  1. Transformer iron Loss: was taken as proportional to the system output. Iron losses  are constant losses, even during night.

  2. Opportunity of switching OFF the transformer during the night, for avoiding night iron losses.

  3. Wiring resistance in AC part:
    Increased reliability for very high diameters, specific current limit
    Indication of undersized wires regarding max. admissible current
    New Help for the maximum admissible current acc. to IEC

  4. Loss diagram: secured units (sometimes not well intialized: W or kW)
    Pumping: unreadable when too high losses for full tank.
    Pumping: div. by 0  

  5. Read Helios3D files:
    Additional tag for not-grouping tables in sets of sheds
    Increased tolerance for orientation mismatch (hidden parameter) 

  6. PV module definition: extended limits for big modules (CPV)

  7. Additional securisation for projects over the polar circle

  8. Legal time - Solar time limit: extended in hidden parameters (China sites)

In  Version 5.54 (17.01.2012) :

  1. Modernize battery database, update with several battery models

  2. Sheds with sloped base: error in south hemisphere

  3. US TMY files: accept measurements of specific years and leap years

  4. Database update

In Version 5.53.2 (16.11.2011) :

  1. Suppression of spectral correction in CdTe modules

  2. Errors in measurement-simul. comparisions graph definition

  3. Database update

In Version 5.53.1 (03.10.2011) :

  1. Error when changing the meteo file in a project

  2. Errors in some inverter's data (nominal current)

  3. Database update

In Version 5.52 (29.08.2011) :

  1. Final report: opportunity of changing kWh <=> MWh

  2. Display errors in financial part (currency not updated)

  3. Import of PVsyst standard meteo data: diffuse model not calculated,errors in dialog when temp. not defined

In Version 5.51 (25.07.2011) :

  1. Error when defining orientation

In Version 5.51 (22.07.2011) :

  1. ModuleLayout: Shading electrical calculation pedagogic tool. Manually put a shading surface on the array, and see the electrical effect

  2. Define a standard file format in CSV for import of hourly data.

  3. Direct import of Meteo data from SolarGIS and 3Tiers (whole world, for pay) in PVsyst standard format.

In Version 5.50 (06.07.2011) :

Development and distribution passing from the University of Geneva to PVsyst SA.

 

  1. Errors in the Grid connected system with load definition (net metering)

  2. Tables and graphs of Measured Global in Plane and Measured Array Temperature.

  3. Errors in Vmpp plots (limits).

  4. Database now includes 7'200 modules and 2'000 inverters.

In Version 5.42 (25.05.2011) :

  1. Bugs fixes in Conversion of ASCII files (Daylight Saving Time, DNI import, etc)

  2. Bug fix in the Meteo calculations in monthly values (since V 5.4)

  3. Horizon import: updates for Format change in Meteonorm, dot accepted in filenames

  4. Model used (Hay or Perez) now can appear on the report

  5. Database update, slight modification for a-Si:H single modules modelling

In Version 5.41 (04.05.2011) :

  1. Import Measured Temp. array in the meteo data and use in the sîmulation.

  2. Some bugs when importing meteo data (DNI, diffuse when timestep < 1H, etc).

  3. Revised and improved import of Helios3D ground data.

  4. Improved plots of measured data.

  5. Wiring of very big systems: increased cable max. sections

In Version 5.40 (01.03.2011) :

  1. Import of meteo data ASCII files. Bugfixes for some specific files.

  2. Import of pure DNI data without Global Horizontal.

  3. Time Shift when importing GlobH (for DiffH calculation), POA or DNI data.

  4. Clear sky model improvement.

  5. Module Layout: bugfixes.

  6. Grid simulations with net-metering: variables and Solar fraction bugfixes.

  7. Import / Export of all database elements modified by the user.

  8. Export of LOG files as ZIP files for debugging.

  9. New AutoUpdater tool for software and database updates.

In Version 5.31 (15.12.2010) :

  1. Import Helioclim data: diffuse was not defined.

  2. Bugs fixes: loss diagram, Help in Meteo import, countries with Upcase.

In Version 5.30 (30.11.2010) :

  1. Help system: completely new CHM version, now fully compatible with Windows 7. A PDF version is available on the site. Direct link for importing PV modules and Inverters from PHOTON database.

  2. New tool for the Meteo data quality check: (Kt plots, clear days check) Implemented middle-interval shift for optimizing treatment of not-centered meteo data.

  3. Importing meteo data from Global Incident (POA) measurements: bug fixed POA measured value now in the recorded data.

  4. Concentrating PV module (CPV): definition with spectral corrections.

  5. Concentrating systems: complete revision of the simulation process / variables.

  6. Update of the loss diagram: also for concentrating systems.

  7. Inverter definitions, some bugs fixed: 3-voltage reading, bi-polar sizing.

  8. Heterogeneous fields:files V 4.37 prevent simulations (0 everywhere).

  9. IAM calculation on diffuse:also with customized IAM function. 

In Version 5.21 (3.09.2010) :

  1. Modules and Inverters database: Direct link for importing PV modules and Inverters from PHOTON database.

  2. Shadings: define a new object (mansard, or roof-window).

  3. Favorites list: choice in the main Database lists easier (by right click).

  4. Filenames: Directory Names now accept accents and some special characters (solving problems with Czeck Republic Windows XP installations).

  5. Meteo data: the wind speed is now part of hourly values when defined monthly.

  6. Inverters: still problems with 3-voltage efficiency definition (solved). 

  7. Sun-shields: bug during mutual shading calculations. 

  8. Bugs fixes: printing of PR, soiling table in parameters, etc.

In Version 5.20 (3.08.2010) :

  1. Important ! File organization and localization has been changed: Your working \Data\ structure is now in a writable area (avoiding delocalization of files written by PVsyst under Vista and Win7). 

  2. Module layout tool for the geometrical arrangement of your system. 

  3. SolarEdge: special option for decentralized architecture with Powerboxes. 

  4. Fixed bugs in Inverter definition, Projects, Latitudes over polar circle, etc.

In Version 5.14 (30.06.2010) :

  1. Autoupdate: bug correction. On some machines, for unidentified reasons (firewall, proxy, ?) the AutoUpdate functionality induces crash at the opening of the software

In Version 5.13 (25.05.2010) :

Bugs correction:

  1. Autoupdate: freezing at opening on some Windows installations (web access).

  2. AC loss: now possible after inverter or after external transfo.

  3. AC loss: bug when identifying mono/tri situation.

  4. Heat loss default values: bug, not always possible to change value.

  5. Stand-alone, economic evaluation: bug fuel consumption.

  6. Stand-alone, Available energy and Time fraction: bugs when very bad design.

  7. Simulation: bug Hourly plots for some variables.

In Version 5.12 (25.05.2010) :

  1. PV modules definition:

    - show the apparent Series resistance (Rsapp, different from Rsmodel).

    - Efficiency plots vs. irradiance: display low-light values.

  2. Still bugs for the automatic update: (freezed the program in some cases)

In Version 5.11 (29.04.2010) :

  1. Bug when importing some meteo data (PVGIS and Helioclim) .

  2. Animation video file (*.avi): now compatible with Windows media Player.

In Version 5.10 (25.03.2010) :

  1. Automatic auto-update for new versions: PVsyst automatically checks and installs new version updates.

  2. Tool for the analysis of electrical effect of cell shading: Extended to several cells, in one or several sub-module (groups protected by one by-pass diode).

  3. Generic (unlimited) shed shadings: Electrical effect of shadings on the first cell row and string.

  4. Mismatch: histogram for the study of statistical loss distribution.

  5. System design reference temperatures: now part of each project.

  6. 2-axis tracking: shadings compatible with concentration option.

  7. Help: tutorial for project design and meteo data.

  8. Language switch: F10 key for directly switching english / local language in most dialogs.

  9. Helioclim data: updated tool according to the new web site data format.

  10. Bi-polar inverters: defined bi-polar inverters in the system design and simulation.

  11. Inverter: bug when efficiency not well defined.

  12. Heterogeneous fields: still bugs in area calculations and mixed fields.

  13. Shading animation: video recording of the shading scene now works.

  14. Stand-alone systems: bugs in regulator definitions and system verifications.

  15. Array voltage: Array voltage was not registred in the simulation.

  16. Export project tool: error warning, corrected.

In Version 5.06 (26.01.2010) :

  1. Vista and Windows 7 64-bit compatibility: parenthesis were not allowed in the default directory \program files (i86)\ proposed by Windows .  

  2. PV model: saturation current Io limit down to 0.1 pA (problems at low temp.)

  3. Helioclim data: the provider have modified the site's format => readapted the program for a compatible easy importation. bugs with master/slave definitions (sometimes divisions by 0) possibility of Strongly Oversized inverters (by modif. Hidden parameters).

  4. Shading calculations sometimes freezed. Improve reliability of shading calc.

  5. Near shadings: near shadings, elementary objects, autorized tilt < 0°.

  6. System dialog: did not keep the defined parameters when rentering the dialog.

  7. Inverter database: terminated the update according to Photon Magazine 2009.

  8. Help: tutoriel for the 3D shadings and for your first project.

In Version 5.05 (18.12.2009) :

  1. Stand-alone systems: bugs in the Regulator dialog and the simulation process.

  2. Grid system sizing tool: still another deep revision for more conviviality bugs with master/slave definitions (sometimes divisions by 0) possibility of Strongly Oversized inverters (by modif. Hidden parameters).

  3. Inverter for 3 voltages: still some little improvements).

In Version 5.04 (21.11.2009) :

  1. System definition freezed when defining multi-MWc systems. No more limit to the system size.

  2. System sizing tool improved.

  3. Corrected further bugs in the report (sometimes over-printing at head of the page).

  4. Improved the ordering tool (sometimes e-mails were not well sent, and we did not receive your order)

In Version 5.03 (10.11.2009) :

  1. Corrections in the Grid-system sizing tool: (MPPT inverters, not yet perfect !).

  2. Colors: some background colors make things unreadable in Vista and Windows 7.

In Version 5.02 (26.10.2009) :

  1. System definition freezed when defining multi-MWc systems. No more limit to the system size.

  2. System sizing tool improved.

  3. Corrected further bugs in the report (sometimes over-printing at head of the page).

  4. Improved the ordering tool (sometimes e-mails were not well sent, and we did not receive your order)

In Version 5.01 (12.10.2009) :

  1. Important bug correction: We just discover a important bug: in some cases (synthetic generation without specified Diffuse monthly values), the Diffuse is very low, leading namely to over-estimated transposed values (GlobInc). Please reinstall this new version, and open the projects elaborated under V 5.0. If this occurs, the program will give a warning, re-calculate the meteo file, and you should re-simulate all your calculations for this project. Please discard the old inputs of such erroneous projects.

  2. Help improved: Help improved for system design and inverter sizing.

In Version 5.00 (06.10.2009) :

    This is a major modernization of the software. Many internal mechanisms have been improved since more than 2 years of development (in parallel to version 4.xx updates). Therefore there may be bugs which have not been detected during the development. Please be so kind as to report them carefully to the authors.

    1. Multilanguage: the simulation report was already available in several languages, but now the software itself is (partly) available in English, French, German, Italian, Spanish and soon Portuguese. This is not yet a full translation: only the most used parts - especially regarding grid connected systems - were translated up to now. This is a very time-consuming job (more than 200 dialogs, and hundreds of information/warning pieces to the user), and we will continue it progressively. On the other hand we don't intend to translate the Help at the moment.

    2. Multi-fields: you have now the opportunity of defining several field types for a given project (with different PV modules or inverters, number of modules in series, etc). Their parameters are detailed on the final report, but the simulation results concern the whole installation.

    3. Inverter: their definition includes many parameters which were not operational in the simulations up to now. Multi-MPPT devices: you can define a specific sub-field for each input. Possibility of Master/Slave operation: the Inverter's cascading is taken into account in the simulation process. For some models: power limitation when running under a specified input voltage, is now taken into account. Efficiency profile for 3 different input voltages.

    4. Heterogeneous orientations: systems with 2 different orientations may now involve different sub-fields in each orientation, and/or a subfield for which the strings of a given inverter are distributed on both orientations (with mix of the I/V curve for correct calculation of the MPP).

    5. Database management: the big lists of components stored as individual files, which took very much time to be loaded in the previous version (and sometimes caused bugs) are now replaced by centralized databases (CSV files). This results in an immediate access, and facilitates the updates of the DB of the software. Only the files you are creating or modifying by yourself will still be stored as individual files as before. This concerns: The PV modules (which should approach 5'000 modules in the DB of 2009), The inverters, The geographic site database (of which the list shows now the source of data).

    6. Favorites: you can now define a list of your favorite components in the database, which drastically simplifies the use of big component lists.

    7. Near Shadings: the full dialog and tool have been improved. You can now: Easily read and write a scene or a building directly from the 3D tool. Multiple selection allows to define groups of objects, that you can replicate or save on a file. Define/fix the characteristics of the view you would like to appear in the final simulation report. Register the shading's animation as a little video.

    8. Special tracker devices with PV modules rotating on a tracking frame (with either N-S or E-W axis), are defined as special shading objects (with database of existing devices).

    9. Shading of thin objects, like electrical wires or handrails, is now possible by weighting their effect on the "Module shading" part of the shaded areas.

    10. Shading on strings: you can put a weight on the effect of the shading according to strings, in order to better approach the real shading effect on the electrical production (not only an upper limit) in the simulation.

    11. Import Horizon profiles directly from Somletric SunEye, Carnaval software, Meteonorm.

    12. Synthetic hourly data generation: the diffuse part may be renormalized to specified monthly data when available. This was not possible in the previous versions.

    13. Improvement of the sizing tool for grid systems. You have now the opportunity of specifying either the nominal power, or the available area as starting point. The software indicates the required ranges for the number of modules in series and in parallel. A new powerful window shows all the constraints when sizing a field, i.e. The voltages of the operating array by respect to the inverter's specifications, Histogram of the waited power production of the array, compared to the inverter's nominal power. Estimation of the overload losses (and visualization of their effect on the histogram). This tool allows to determine precisely the ratio between array and inverter Pnom, and evaluates the associated losses.

    14. The default losses management has been improved, especially the "Module quality loss" which is determined from the PV module's tolerance, and the mismatch on Pmpp which is dependent on the module technology.

    15. Losses between inverters and grid injection have been implemented. These may be either ohmic wiring losses, and/or transformer losses when the transformer is external.

    In Version 4.37 (June 2009) :

    1. New installer and installing file (old one has problems with new XP).

    2. Few new modules in the database.

    3. Easier registration process (direct access to e-mail editor).

    In Version 4.36 (April 2009) :

    1. CdTe modules: the module definitions of the old database are affected by the new recombination losses. Recreated files in the database for all CdTe modules, including recombination term according to our recent measurements at the University of Geneva.

    In Version 4.35 (March 2009) :

    1. Import of Meteo data:some bugs fixed:

      • Bug in some new files of Meteonorm V 6.0 (containing leap years)

      • Bug in some TMY3 files 

    2. CdTe PV modules: according to our detailed measurements:opportunity of defining Recombination Losses

    3.  Shading factor calculation (especially diffuse): bug when the plane azimuth is very unusual.

    In Version 4.34 (February 2009) :

    1. Database: PV modules from manufacturers (especially many amorphous) and new inverters.

    2. Tool for analysing shading of one cell in an array: Improvements, shows not shaded I/V charact. and Pmpp loss.

    3. Meteo data import:

      • US-TMY3 Import implemented (1020 stations available)

      • Satellight: Bug temperatures when importing 5 years at a time.

      • PVGIS: Bug all months accounted as 31 days (overestimate 1.6%).

      • PVGIS: Now uses PVGIS site new interface, much more convivial.

      • Meteonorm: Monthly files: still discovered a new format variant.

      • Temperatures: Possibility of importing NASA data, always available.

    4. Tracking tilted axis: error when axis azimuth not south.

    5.  Measured and Meteo data: little bugs (extended available date formats)

    In Version 4.33 (October 2008) :

    1. Database update: PV modules and Inverters from "Photon Magazine 2008" (3120 modules and 1123 inverters are now available).

    2. Meteonorm import: tolerant to another (not yet registred) file format.

    Some bugs fixed :

    - Error in importing temperatures from Satellight data corrected.

    - Lost of simulation results at each reloading of a calculation version corrected.

    - Error in the GlobShd evaluation (but wich didn't affect the final results) corrected.

    In Version 4.32 (July 2008) :

    1. Database: Inverters update from "Photon Magazine 2008" (PV modules 2008 are not yet available).  

    2. Loss diagram: incoherences in the shading and IAM relative losses (only display in this diagram - simulation results were correct).

    3. Ascii Meteo importign tool : date management improvement, site names beginning by "New" are now possible.

    4. Search Edit for easier choice in big component lists.

    5. Print Preview: easier navigation through pages.

    In Version 4.31 (June 2008) :

    Some bugs fixed :

    1. Satellight data import: Temperatures were not well imported.

    2.  PVGIS import: copy/paste did not work with some internet browsers.

    3.  Site/Meteo choice for Projects: generated erroneous meteo files

    4.  Simulation report: erroneous tables overwrited parameters (namely IAM)

    5.  Import of Meteo ASCII files: improvements for daily data and date formats.

    6.  Long component's lists: edit box for direct access to a given item

    In Version 4.3 (March 2008):

    1. Import of meteo data from multiple popular sources (NASA, WRDC, PVGIS, RetScreen, Helioclim).

    2. Comparison between several Meteo Data sources.  Developments and results in the Help.

    3. Import/Export of "Site" monthly data from/to EXCEL.

    4. Improvement of the Meteo hourly files management (site and comment now editable/exportable).

    5. Implementation of Tracking with vertical axis, also useable with positioning of modules on a "dish"

    6. Module temperature calculation: revision (new parameters, absorption, etc).

    7. PV model for amorphous: parameter determination according to a specified  muPmpp  value. Adjusment of all triple-junction module parameters in the database.

    8. Bug Tracking: azimuth sign error in south hemisphere: the tracking was reversed !

    9. Bug Shadings, polygonal fields: rewritten the whole modules calculation.

    In Version 4.21 (August 2007):

     

    1. Some youth bugs of version 4.2 are now fixed.
      The more relevant one:
      with tracking 2-axis, the collectors returned to their default position (30° south) when the sun's azimuth was under -90° or over 90°. Now they take this position only by night (sun height < 0). This caused an unexpected loss of the order of 7% in sunny regions.

    2. Others:
      "Transfer projects" option was not working properly.
      Near shadings: erroneous message in some cases.
      Soiling parameter definition was hidden. Etc...

    In Version 4.2 (July 2007):

    1. Improvement of the navigability in the 3D construction tool, copy/paste of an object from one variant or project to another one. Automatic verification of the Field interpenetration (or tangency) with another object, which may prevent good shading calculations.

    2. Backtracking strategy with all tracking systems, involves tracker width and distance definitions.

    3. Sun-shields definition in the 3D tool; also with backtracking, which may considerably improve the sun-shield's performances.

    4. High-Concentrating systems simulation, associated with 2-axis trackers; adaptation of the simulation process and loss diagram.

    5. Long-term financial balance tool, including several Feed-in tariff strategies (day/night or seasonal variations, feed-in and self-consumption tariffs, etc) and system ageing.

    6. Soiling parameter included in the simulation and loss diagram, with opportunity of defining monthly variations.

    7. Direct import of meteo values from NASA-SSE database over the whole earth (by 1°x1° cells), and practical procedure for importing meteo values from WRDC database, especially for countries where METEONORM data are scarce.

    8. Improved the model for amorphous PV modules, especially safety of parameter boundaries, and behaviour presentation to the user.

    9. Improved the Project dialog and choice of a site/meteo. Improved compatibility checks between the project's site and hourly meteo. Extraction/edition of the site geographic properties within an hourly meteo file, which was not possible up to now.

    10. Database update, with PV modules and inverters of 2006/2007 (now around 2250 PV modules and 860 inverters).

    11. Adaptations for Windows VISTA OS, especially concerning the visual interface. All other functions seem to be perfectly compatible.

    12. Introduction of many "Logs" in the program, in order to facilitate the debugging of user's problems.

    In Version 4.1 (January 2007):

    1. The Simulation output reports are now available in French, German, Spanish, Italian (useful for presenting the PV system characteristics to customers).

    2. Windows user's rights compatibility: The \DATA\ structure has been modified for compatibility with the user's rights protections in Windows. A user without writing rights can now copy the whole DATA structure for use in his own writable area. Data may be shared - or not - between different users of the machine.

    3. Files and projects transfers: Archiving or importing projects, as well as database updating tools have been improved.

    In Version 4.0

    Pumping PV systems

    3 types of PV systems are implemented: deep well, pumping from lake or river, and pressurization for water distribution.
    These may be simulated with a great variety of system configurations, and for any pump type.

    The pumping systems are usually constructed according to the pump's manufacturer recipes, which give only an idea of the pumped water for a typical good day in standard conditions. This tool evaluates the pumping performances of a great variety of technological solutions, for a given location and meteo conditions, and related to the real user's needs all over the year.

     

    This implies the development of an original model for describing the pump's behaviour.
    This model
    applies to any pump type, and may be established according to usual manufacturer's specifications.
    A database of about 100 available pump models is available (should be enriched in the near future).

    The pump's electrical characteristics in any operating conditions are especially required for the simulation of pumping systems with direct coupling between the PV-array and pump (or their improved versions like booster, pump cascading or PV array reconfiguration).
    But the simulations show that MPPT power converters - now currently available - noticeably improve the pumping system performances.
    The results will help to choose the best economical solution.
    .

    In Version 3.41

    1. Automatic facility for importing meteo data from the Satellight Project, real data available free from the web for any pixel of about 5x7 km² in Europe. These data become better than terrestrial measurements, as soon as you are distant of more than 20 km from the measuring station. You can choose among five years of full data (1996-2000).

    In Version 3.4

    New modelling procedure for the amorphous modules
    This procedure was established and validated using the results of a research project performed at CUEPE, funded by the SIG-NER fund (the SIG - Services Industriels de Genève - are the Geneva Electric and Gaz Utility). This project included detailed long-term measurements of 6 PV modules in real conditions. It also gave a quantified validation of the standard model for crystalline and CIS modules.
    Extended component database
    Over 1'750 PV modules and 650 inverters are now referenced, with dates for identification of market availability or obsolete components. With such big lists, a mechanism for quick access time had to be implemented.

     

    Near shading 3D tool
    View of the shading scene in realistic colors (settable by the user for each object) - instead of "iron wires" representation - improves the understanding of complex scenes, and gives a much more attractive image of the project for the final customers.
    Animation over a whole chosen day also clarifies the shading impact of a given situation.
    Implementation of tracking planes in the 3D shading tool.
    Especially suited for the optimisation of heliostat arrays layout.

    Review and improvement of the Simulation Process
    Clarification of the losses at any stage of the system, extension to battery systems with DC-DC converters, rewriting of the heterogeneous field treatment , etc.
    Detailed loss diagram
    Gives a deep sight on the quality of the PV system design, by quantifying all loss effects on one only graph. Losses on each subsystem may be either grouped or expanded in detailed contributions.
    Restructuration of the internal representation of the physical variables
    These two last improvements were made possible thanks to a very deep revision of the internal data structure, in order to obtain more flexibility when using the simulation variables. This reorganization is transparent for the user, but allows now many enhancements of the simulation process, namely easy adding of new variables when necessary, including them dynamically in the simulation process according to specific system configurations, or inversely discarding other ones when they are not relevant.

     

     



     

    In this Version 5.53 (03.10.2011) :

    1. Error when changing the meteo file in a project

    2. Errors in some inverter's data (nominal current)

    3. Database update

     

    System verifications: some possible errors not accounted (e.g.
    Module sizes)