Patent ID: 8593092

Claim:
A control system for a multiphase rotating machine comprising: a power conversion circuit connected to the rotating machine for supplying a current to the rotating machine; a control unit for controlling a current supply to the rotating machine from the power conversion circuit, the control unit conducting a process for allowing the current to flow from one phase into another phase of the rotating machine by plural times while changing at least one of the one phase and the another phase to control a rotation angle of the rotating machine to a final angle through an intermediate angle, the control unit thereby determining an initial value of a rotating angle when starting the rotating machine according to the final angle, wherein a required time after a process immediately before a final process among the plurality of processes starts until the final process starts is set to be longer than a first time during which an angle interval between a target value of the rotation angle due to the process immediately before the final process and an uncontrollable angle relative to the final angle by the final process is assumed to coincide with an amplitude of variation of the rotation angle of the rotating machine.