ITECH Solar/PV inverter Test solution

ITECH Solar/PV Inverter Test Solution

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ITECH Solar/PV Inverter Test Solution

IT9380 solar battery test software is the professional software aims for solar IV characteristic.

With combination of ITECH programmable electronic loads IT8700/IT8800/IT8900, the solar battery test system is built up. It can test solar battery IV characteristic under kinds of Spectrums and light sources, and supports long time automatic testing. With the ambient temperature and sunlight irradiance changing, the IV characteristics and conversion efficiency of the solar battery will change.

  • Work with IT8700/IT8800/IT8900 series electronic loads for different DUTs.
  • Set up testing interval and time period, the software manages periodic scan during time period, automatic testing.
  • Support multi-channel testing at the same time, free to switch the interface of each channel.
  • Testing data can be exported to save in excel format.

Functions & specification requirements

Itech Solar Test Solution

System structure

Itech Solar Test Solution

Test items

  • Test parameters.
  • Short circuit current (Ishort).
  • Open circuit voltage (Vopen).
  • Peak Power (Pmax).
  • Peak power point voltage (Vpmax).
  • Peak power point current (Ipmax).
  • Peak power point resitance (Rpmax)
  • Filling factor (FF).

ITECH has the latest high speed high performance photovoltaic / solar simulation power supply, adopting high power DC power supply equipped with SAS1000/L solar array simulation software can accurately simulate the solar array I-V curve, maximum voltage up to 2250V, power can be extended to 1152kW. It is with fast response time, control, repeatability, high stability, precision and other characteristics. Built-in EN50530 / Sandia / NB/T32004 / CGC/GF004 / CGC/GF035’s SAS model that can easily program test regulations, materials, Vmp, Pmp parameters, so as to simulate I-V curve characteristic output and generate reports, and can be applied in test the static & dynamic maximum power tracking performance of photovoltaic inverters.


  • Automatic wide range output, the voltage up to 2250V.
  • Power up to 1152kW.S
  • Solar array simulate I-V function (Built-in I-V curve mathematical formula).
  • Simulate the output characteristics of various solar cell (monocrystalline silicon cell, polysilicon cell, thin film cell) (Fill Factor).
  • Simulate I-V curve under different temperature and irradiation.
  • Simulate I-V curve for solar panel under shadow.
  • Static & dynamic MPPT efficiency test.
  • Built-in EN50530 / Sandia / NB/T32004 / CGC/GF004 / CGC/GF035 test program, and generate reports.
  • Graphical software interface, real-time test and display MPPT state of PV invertir.
  • Auto program control 100 I-V curves via Voc, Isc, FF, Pm and other parameter points.
  • 100 * 128 points curves and 4096 points precise programming control.
  • Support output impedance setting function.
  • Support various mode edge independent set, adjustable rising and falling time.
  • Two-way current seamless switching, suitable for fast cell charge and discharge.
  • Built-in DIN 40839 & ISO-16750-2.
  • Standard USB/RS232/GPIB/LAN (LXI compliant) interface.


  • Design & verify the MPPT circuit and algorithm of the PV invertir.
  • Verify the MPP voltage range and the full load MPP voltage range of the invertir.
  • Verify static maximum power tracking efficiency of the PV invertir.
  • Verify the MPPT performance of the inverter for dynamic curves (Built-in EN50530,Sandia,NB/T32004,CGC/GF004, CGC/GF035).
  • Verify the inverter starting voltage and the maximum input voltage, the maximum input current and other electrical parameters.
  • Verify the MPPT mechanism of the inverter for the I-V curve when the solar cell is shaded by clouds or trees.
  • Test inverter DC terminal OVP, OPP.
  • Verify micro-grid control center and control function of photovoltaic energy storage System.
  • Verify the MPPT performance of the inverter from early morning to night fall.
  • Verify the total efficiency and conversion efficiency of the inverter with IT9100 power analyzer