DC voltage component removal for multiphase inverter output - converts DC to AC voltage with 1-N phases using detectors between output lines of first phase of 2-N phases

摘要

Control units (21, 31) are provided, which respectively regulate the output voltages of the second up to the Nth phases on the corresp. output lines (42, 43) of the inverter (1) in the way, that the DC voltage components measured by the first to the Nth detectors (6, 7) are reduced to zero. The control unit (21, 31) has a first to (N - 1)th integrator (22, 32), which integrates the respective DC voltage components, which are measured from the first to the (N - 1)th detectors (6, 7). - The detectors (6, 7) are insulated differential amplifiers.