| abstract |
(57) [Problem] To perform a regenerative operation at the time of deceleration by a rotating electric machine provided in a vehicle drive device, thereby optimally controlling an exciting current of an electromagnetic clutch for controlling connection with an engine, thereby reducing clutch life and regenerative efficiency. Improve. A regenerative efficiency is provided by providing a weak excitation current having a characteristic that increases as a clutch rotational speed decreases during deceleration regeneration of a vehicle, thereby ensuring a demand for responsiveness when an electromagnetic clutch is connected, and minimizing a clutch drag torque. Improve. |