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  • ITECH test solutions in the solar PV field mainly include the high-precision and high-reliability test instruments and systems developed for photoelectricity test of solar cell arrays and related tests of PV inverters.
     
    Test solution for solar cells and solar cell arrays
    In the test solution of ITECH, the I-V curve can be drawn automatically, and the peak power Pmax, voltage Vpmax at the peak power point, rated current Ipmax at the peak power point, resistance Rpmax at the peak power point, open circuit voltage Vopen, short-circuit current Ishort, fill factor and other parameters can be measured and recorded.
     
    Test solution for PV inverters
    Solar cell can only generate direct current and the quantity is related to irradiance intensity, which is difficult to be used directly, so it is necessary to convert DC to AC power by PV inverter, which is easier for transmission and usage. With the built-in EN50530 / Sandia / NB/T32004 / CGC/GF004 / CGC/GF035 SAS module, simulate I-V curve under different temperature and irradiations. simulate the output characteristics of various solar cell, the solar panel output simulation under the 24-hour real environmental parameters is also available. As a solar simulator, our power supply also provides supports for micro-grid, distributed photovoltaic etc power system simulation and core equipments testing. At the same time, ITECH test solution also provides a variety of normal and abnormal AC input, and test important electrical performance parameters, meet the test requirements for grid-connected inverter grid frequency response test, anti-islanding effect test and low voltage.
     
  • Test of PV grid-connected inverter
    As the electric energy should be directly converted by the PV grid-connected inverter into the sine-wave current with the same frequency and phase as the power grid before feeding into the power grid, any change of the power grid will affect normal operation of the PV inverter. Therefore, the inverter must be subject to the power grid frequency response test, anti-islanding test and low-voltage tranverse test to verify the response to power grid changes. In the test solution of ITECH, various normal and abnormal AC power inputs can be simulated, the important electrical parameters of tested objects can be measured, and the above test requirements of the PV grid-connected inverter can be met.
     
    Products:
     
     
    Test of PV grid-connected inverter
    As the electric energy should be directly converted by the PV grid-connected inverter into the sine-wave current with the same frequency and phase as the power grid before feeding into the power grid, any change of the power grid will affect normal operation of the PV inverter. Therefore, the inverter must be subject to the power grid frequency response test, anti-islanding test and low-voltage tranverse test to verify the response to power grid changes. In the test solution of ITECH, various normal and abnormal AC power inputs can be simulated, the important electrical parameters of tested objects can be measured, and the above test requirements of the PV grid-connected inverter can be met.
     
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