Patent ID: 7538523

Claim:
A control apparatus-integrated generator-motor comprising: a generator-motor comprising: an armature that has an armature winding; and a rotor, said generator-motor performing power transfer with an engine; and a control apparatus comprising: an inverter that is mounted integrally onto an outer circumference or an axial end surface of said generator-motor, and that has a plurality of switching elements; and a control circuit that controls said inverter by a command signal from an idling stop control portion on a vehicle, said control apparatus performing an engine starting operation and a battery charging operation by performing direct-current to alternating-current conversion of electric power in two directions between said generator-motor and a battery, wherein electric current that flows to said switching elements is set to a limited value during at least one of a power generating operation or an engine restarting operation of said generator-motor in order to prevent a temperature of said switching elements from exceeding a predetermined threshold value even if said switching elements are subjected to a temperature increase that results from heat received from a high-temperature portion of said generator-motor after an automatic engine stopping operation and a subsequent temperature increase during said engine restarting operation.