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SAS1000 - Solar Array Simulation Software
Reference
SAS1000 Solar array software for IT6500C/IT6000B/IT6000C/IT-M3600
SAS1000L Solar array software for IT6500C/IT6000B/IT6000C/IT-M3600 (power≤15kW)
SAS1000M Solar array software for IT6500C/IT6000B/IT6000C/IT-M3600 (multi-channel)
ITECH introduces its latest high-speed, high-performance photovoltaic simulation solution. When combined with high-power DC power supplies, the SAS1000/L solar array simulation software accurately reproduces solar array I-V curves, with output voltage up to 2250 V and scalable system power up to 10 MW.
The system delivers fast dynamic response, excellent control accuracy, high repeatability, outstanding stability, and precision performance. It features built-in simulation models compliant with EN 50530, Sandia National Laboratories PV model, NB/T 32004, CGC/GF004, and CGC/GF035.
Users can easily configure test regulations, material types, Vmp, Pmp, and other parameters to simulate I-V curve characteristics and automatically generate test reports. The software is ideal for static and dynamic maximum power point tracking (MPPT) performance testing of photovoltaic inverters.
Product Features
- Automatic wide-range output, with voltage up to 2250 V
- Scalable power up to 10 MW
- Built-in I-V curve mathematical model for accurate solar array simulation
- Simulation of various solar cell technologies (monocrystalline, polycrystalline, thin-film), including Fill Factor configuration
- I-V curve simulation under varying temperature and irradiation conditions
- Shading simulation for solar panels (e.g., cloud or tree shadow scenarios)
- Static and dynamic MPPT efficiency testing
- Built-in EN 50530, Sandia National Laboratories PV model, NB/T 32004, CGC/GF004, and CGC/GF035 test programs with automatic report generation
- Graphical user interface with real-time MPPT status monitoring
- Automatic programming of up to 100 I-V curves via Voc, Isc, FF, Pm, and other parameter points
- Support for 100 × 128-point curves and 4096-point high-resolution programming
- Adjustable output impedance
- Independent edge configuration for multiple operating modes, with adjustable rise and fall times
- Seamless bidirectional current switching for rapid cell charge and discharge simulation/li>
- Built-in DIN 40839 and ISO 16750-2 compliance
- Standard USB, RS232, GPIB, and LAN (LXI compliant) interfaces
- Support for up to 20 solar power supplies for multi-channel MPPT testing
Applications
- Design and validation of PV inverter MPPT circuits and algorithms
- Verification of inverter MPP voltage range and full-load MPP voltage range/li>
- Validation of static maximum power tracking efficiency
- Dynamic MPPT performance testing according to EN 50530, Sandia National Laboratories PV model, NB/T 32004, CGC/GF004, and CGC/GF035
- Verification of inverter start-up voltage, maximum input voltage, maximum input current, and related electrical parameters
- MPPT validation under partial shading conditions
- DC terminal protection testing (OVP, OPP)
- Validation of microgrid control centers and photovoltaic energy storage control functions
- MPPT performance verification from sunrise to sunset operating conditions
- Total and conversion efficiency testing of inverters when used with the IT9100 power analyzer
Functions and Advantages
High-Speed, High-Performance Photovoltaic / Solar Simulation Power Supply
ITECH’s high-speed, high-performance photovoltaic simulation power supply integrates advanced high-power DC hardware with the SAS1000 solar array simulation platform.
The solution includes more than 200 models covering a wide voltage and current range, with output capabilities up to 2250 V and 2040 A. A single system can address a broad spectrum of application requirements, simplifying model selection for users.
The photovoltaic simulation power supply supports independently adjustable edge times for each operating mode, seamless two-quadrant current switching, and comprehensive protection functions, including OVP, OCP, OPP, OTP, and reverse Vsense protection.
Graphical Software Interface
The system features an intuitive graphical user interface that enables users to easily configure output parameters, perform measurements, monitor the maximum power point tracking (MPPT) status of photovoltaic inverters in real time, and record test data.
Built-in regulatory test procedures compliant with EN 50530, Sandia National Laboratories protocols, NB/T 32004, CGC/GF004, and CGC/GF035 allow users to evaluate both static and dynamic MPPT performance and automatically generate comprehensive test reports for benchmarking purposes.
The solar simulation power supply also includes Shadow Mode and Table Mode:
- Users can define and edit any custom I-V curve using 128 to 4096 programmable points to simulate dynamic shading effects.
- Up to 100 I-V curves under different irradiation and temperature conditions can be stored to evaluate long-term MPPT performance across varying climatic scenarios.
Simulation of Solar Cell Output Characteristics (Fill Factor Control)
Solar cell performance is influenced not only by intrinsic electrical characteristics but also by environmental factors such as season, temperature, irradiation, cloud cover, rain, and snow. As a result, I-V characteristics vary over time.
Photovoltaic inverters must dynamically adjust the operating point of the solar array to ensure operation near the maximum power point (MPP)—a process known as MPPT.
ITECH’s photovoltaic simulation power supply enables precise laboratory simulation of real-world solar array behavior, including Fill Factor configuration, allowing comprehensive validation of both static and dynamic MPPT performance under controlled conditions.
Static and Dynamic MPPT Performance Testing
MPPT tracking capability is a critical performance indicator for photovoltaic inverters. To ensure consistent evaluation across different products, industry organizations have established standardized test profiles.
The built-in MPPT test programs compliant with EN 50530, Sandia National Laboratories protocols, NB/T 32004, and CGC/GF004 enable users to configure parameters such as Vmp, Pmp, material type, test duration, and maximum power percentage.
During testing, the system displays the I-V curve and real-time tracking process on screen, records data throughout the entire test cycle, and automatically generates detailed reports for MPPT performance verification.
Shaded I-V Curve Simulation (Shadow Mode)
ITECH’s photovoltaic simulation power supply allows users to simulate solar array output under various shading conditions to evaluate real-time maximum power tracking and array performance.
The system provides multiple predefined PV module models from different suppliers and also enables users to create custom PV module configurations.
Users can define:
- Irradiation and temperature parameters for shaded areas
- Cell string configurations and parallel quantities
- Dynamic cloud movement direction
- Initialization time, run time, and cloud movement intervals
This advanced shadow simulation capability ensures realistic and repeatable testing of inverter performance under complex environmental conditions.
SAS1000
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Reference
SAS1000 Solar array software for IT6500C/IT6000B/IT6000C/IT-M3600
SAS1000L Solar array software for IT6500C/IT6000B/IT6000C/IT-M3600 (power≤15kW)
SAS1000M Solar array software for IT6500C/IT6000B/IT6000C/IT-M3600 (multi-channel)
ITECH introduces its latest high-speed, high-performance photovoltaic simulation solution. When combined with high-power DC power supplies, the SAS1000/L solar array simulation software accurately reproduces solar array I-V curves, with output voltage up to 2250 V and scalable system power up to 10 MW.
The system delivers fast dynamic response, excellent control accuracy, high repeatability, outstanding stability, and precision performance. It features built-in simulation models compliant with EN 50530, Sandia National Laboratories PV model, NB/T 32004, CGC/GF004, and CGC/GF035.
Users can easily configure test regulations, material types, Vmp, Pmp, and other parameters to simulate I-V curve characteristics and automatically generate test reports. The software is ideal for static and dynamic maximum power point tracking (MPPT) performance testing of photovoltaic inverters.
Product Features
- Automatic wide-range output, with voltage up to 2250 V
- Scalable power up to 10 MW
- Built-in I-V curve mathematical model for accurate solar array simulation
- Simulation of various solar cell technologies (monocrystalline, polycrystalline, thin-film), including Fill Factor configuration
- I-V curve simulation under varying temperature and irradiation conditions
- Shading simulation for solar panels (e.g., cloud or tree shadow scenarios)
- Static and dynamic MPPT efficiency testing
- Built-in EN 50530, Sandia National Laboratories PV model, NB/T 32004, CGC/GF004, and CGC/GF035 test programs with automatic report generation
- Graphical user interface with real-time MPPT status monitoring
- Automatic programming of up to 100 I-V curves via Voc, Isc, FF, Pm, and other parameter points
- Support for 100 × 128-point curves and 4096-point high-resolution programming
- Adjustable output impedance
- Independent edge configuration for multiple operating modes, with adjustable rise and fall times
- Seamless bidirectional current switching for rapid cell charge and discharge simulation/li>
- Built-in DIN 40839 and ISO 16750-2 compliance
- Standard USB, RS232, GPIB, and LAN (LXI compliant) interfaces
- Support for up to 20 solar power supplies for multi-channel MPPT testing
Applications
- Design and validation of PV inverter MPPT circuits and algorithms
- Verification of inverter MPP voltage range and full-load MPP voltage range/li>
- Validation of static maximum power tracking efficiency
- Dynamic MPPT performance testing according to EN 50530, Sandia National Laboratories PV model, NB/T 32004, CGC/GF004, and CGC/GF035
- Verification of inverter start-up voltage, maximum input voltage, maximum input current, and related electrical parameters
- MPPT validation under partial shading conditions
- DC terminal protection testing (OVP, OPP)
- Validation of microgrid control centers and photovoltaic energy storage control functions
- MPPT performance verification from sunrise to sunset operating conditions
- Total and conversion efficiency testing of inverters when used with the IT9100 power analyzer