PURPOSE: To make a high speed response of a multiplex power converter control possible providing second controllers at every unit power converter and processing in parallel the arithmetic operations of the AC output voltage of the converters respectively having phase difference commanding values.
CONSTITUTION: Second controller 3 input AC-DC voltage commanding values Vp* and Vq* of a rotational coordinate system, voltage phase commanding value θ*, and phase difference commanding values δ1*-δn* with respect to a fundamental-wave voltage on the AC side from a first controller 2 and outputs inverter driving signals PG1-PGNn to a power converter 1. Then the controllers 3 respectively process in parallel the arithmetic operations of the AC output voltage of the converter 1 having the phase difference commanding values δ1*-δn*. Therefore, a high speed response of the power converter control can be achieved, because the controlled arithmetic operations can be processed at a high speed and the sampling period can be shortened.
UEDA SHIGETA
SUGIURA YASUYUKI
MOTOBE MITSUSACHI
