Dynamoelectric unit, and a control method for the generator motor

Dynamoelectric unit has a rotor having a magnet, a coil driven by a plurality of phases, a stator coils of each phase are not connected to each other, a generator motor having a phase coil of the stator and a first state for generating a torque on the rotor, as both ends of the coil is a second state of being electrically released, and a third state in which both ends of the coil is short-circuited, and one of and a drive control unit for controlling.