Generating Module Files in PlantPredict -Stephen Joseph Kaplan-First Solar

GENERATING MODULE FILES IN PLANTPREDICTStephen KaplanPerformance “model-calculated” MPP, etc. Copyright First Solar, Inc. 11 December 201817First Solar Proprietary Confidential - Finance/Accounting/RND What if I am given a module datasheet Manufacturer Datasheet as InputData Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201818First Solar Proprietary Confidential - Finance/Accounting/RND What if I am given a module datasheet Manufacturer Datasheet as InputData Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201819First Solar Proprietary Confidential - Finance/Accounting/RND What if my only source of data is an IEC-61853-1 test matrixIEC-61853-1 Test Data as Input Photovoltaic PV module performance testing and energy rating – Part 1 Irradiance and temperature performance measurements and power rating, IEC 61853-1 Ed. 1.0, 2011. Data Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201820First Solar Proprietary Confidential - Finance/Accounting/RND What if my only source of data is an IEC-61853-1 test matrixIEC-61853-1 Test Data as Input Photovoltaic PV module performance testing and energy rating – Part 1 Irradiance and temperature performance measurements and power rating, IEC 61853-1 Ed. 1.0, 2011. Data Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201821First Solar Proprietary Confidential - Finance/Accounting/RND What if my only source of data is an IEC-61853-1 test matrixIEC-61853-1 Test Data as Input Photovoltaic PV module performance testing and energy rating – Part 1 Irradiance and temperature performance measurements and power rating, IEC 61853-1 Ed. 1.0, 2011. Relative Efficiency Calculation Data Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201822First Solar Proprietary Confidential - Finance/Accounting/RND What if my only source of data is an IEC-61853-1 test matrixIEC-61853-1 Test Data as Input Photovoltaic PV module performance testing and energy rating – Part 1 Irradiance and temperature performance measurements and power rating, IEC 61853-1 Ed. 1.0, 2011. Temperature Coefficient Calculation Linear Regression Data Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201823First Solar Proprietary Confidential - Finance/Accounting/RND What if I only have I-V curve dataI-V Curve Test Data as InputData Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201824First Solar Proprietary Confidential - Finance/Accounting/RND What if I only have I-V curve dataI-V Curve Test Data as Input1 For each I-V curve at a given Temperature and Irradiance, Isc / Voc / Imp / Vmp / Pmp extracted via graphical methods. 2 Resulting dataset processed like IEC-61853-1 data to generate1. Electrical Characteristics STC2. Temperature Coefficients3. Relative efficiencies at low-light Data Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201825First Solar Proprietary Confidential - Finance/Accounting/RND What if I want to generate a module file as quickly as possibleInitial Calculation with Default AssumptionsAutomatically calculates a set of 1-diode parameters based on technology-dependent ie. cSi vs. CdTe generalizations, such as low-light relative efficiency at 200 W/m 2 is 97 cSi Series Resistance is 50 of maximum series resistance CdTe Recombination Parameter is 90 of maximum recombination parameter CdTe etc. Data Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201826First Solar Proprietary Confidential - Finance/Accounting/RND Disadvantages of Using Default AssumptionsInitial Calculation with Default AssumptionsMaking single assumptions for ALL c-Si or ALL CdTe modules is a bad idea 1 Significant error between nameplate power and maximum power calculated from resulting single-diode parameters.Data Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201827First Solar Proprietary Confidential - Finance/Accounting/RND Disadvantages of Using Default AssumptionsInitial Calculation with Default AssumptionsMaking single assumptions for ALL c-Si or ALL CdTe modules is a bad idea 2 Low-light performance does not match expected performance from measured test data IEC-61853-1.Effective Irradiance Response calculated from measured performance data. This is the expected/target performance.Data Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201828First Solar Proprietary Confidential - Finance/Accounting/RND How do I “tune” the module to perform as expectedMatching Expected Module Performance12 Manually adjust key single-diode parameters.Use automatic series resistance optimization.Data Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201829First Solar Proprietary Confidential - Finance/Accounting/RND Module performance tuned successfullyMatching Expected Module PerformanceData Sources/Inputs Manufacturer Datasheet IEC-61853-1 Test Matrix I-V Curve DataGenerating a Module File Initial Calculation with Defaults Matching Expected Performance Copyright First Solar, Inc. 11 December 201830First Solar Proprietary Confidential - Finance/Accounting/RND Module File Ready for Simulation