DISCHARGING A CAPACITY PROVIDED AT THE OUTPUT OF AN INVERTER

摘要

To discharge an filter capacity (7, 8) at the output of an inverter (1) for feeding electrical power from a generation unit into a grid via a grid connect switch (11) having a generation unit side and a grid side and via AC grid terminals (L1, L2, L3) on the grid side of the grid connect switch (11), the filter capacity (7, 8) being connected to at least one of the AC grid terminals, any voltage applied across the filter capacity (7, 8) is rectified independently of its polarity to provide a rectified voltage of fixed polarity, and a DC voltage link (13) of a power supply unit (14) for operating circuitry of the inverter (1) is charged with this rectified voltage.