Multi-Mode Voltage Sag/Swell Generator Based on Three-Phase Inverter Circuit
The voltage ride through capability of the major auxiliary variable-frequency drive (VFD) in large thermal power plants is the key technical issue of power grid and source coordination.In order to test the high voltage ride through (HVRT) Internal and low voltage ride through (LVRT) capability of the auxiliary VFD, it is necessary to develop a powe