A PV array, PV array simulator or c

A PV array, PV array simulator or controlled DC source with PV characteristics may be used as DC power source to supply input energy for the low voltage ride through test. As the equipment under test input source, the DC power source shall be capable of supplying the equipment under test maximum input power and other power levels during the test, at minimum and maximum input operating voltages of the equipment under test.The PV simulator should emulate the current/voltage characteristics of the PV module or PV array for which the equipment under test is designed. The response time of a PV simulator should not be longer than the maximum power point tracking response time of the equipment under test.For a equipment under test without galvanic isolation between the DC side and AC side, the output of the PV simulator shall not be earthed.The equivalent capacitance between the output of the PV simulator and earth should be as low as possible in order to minimize impact on the equipment under test.A PV array used as the equipment under test input source shall be capable of matching the equipment under test input power levels specified by the test conditions. It is necessary to select a period of time in which the solar irradiance is atable and does not vary by more than 5% during the test,