Patent ID: 7598692
Filing Date: 2009-10-06
Classification: H02M,H02P

Abstract:
1. A control unit for controlling an electric power converter, the electric power converter converting multi-phase alternating current inputted from a generator and supplying the converted current to a motor, the control unit comprising: an input power factor commanding section operable to output an input power factor command value for an input power factor of the generator according to an operating condition of the motor; and an input power factor controlling section operable to output a control signal to the electric power converter, the control signal for controlling the input power factor and based on the input power factor command value wherein the control signal includes an ON/OFF signal output to each of a first switch connecting R-phase and U-phase of the electric power converter, a second switch connecting S-phase and the U-phase of the electric power converter, a third switch connecting T-phase and the U-phase of the electric power converter, a fourth switch connecting the R-phase and V-phase of the electric power converter, a fifth switch connecting S-phase and the V-phase of the electric power converter, a sixth switch connecting the T-phase and the V-phase of the electric power converter, a seventh switch connecting the R-phase and W-phase of the electric power converter, an eighth switch connecting the R-phase and the W-phase of the electric power converter, and a ninth switch connecting the T-phase and the W-phase of the electric power converter.