Triphase synchronous motor generator controlling device for motor vehicle, has arithmetic unit calculating restarting excitation angle on stator phase, and source supplying phase with voltage such that voltage is higher than preset voltage

摘要

The device has a rotor position detector circuit (24) e.g. resolver, detecting a position of a rotor (1F) e.g. field magnet, and a direct current-alternating current converter (2) arranged to input/output current in/from a synchronous triphase motor generator. The converter has an arithmetic unit (21) calculating a restarting angle of excitation on a phase of a stator (1A) e.g. armature, based on a voltage at terminals. A direct current supply source (3) e.g. battery, supplies the phase with the voltage having rectangular waves such that voltage is higher than a preset voltage.