DRIVE SYSTEM, DRIVE UNIT, CONTROL DEVICE AND CONTROL METHOD

摘要

A drive system includes: an inverter circuit including switching circuits for multiple phases, each of the switching circuits including an upper arm and a lower arm connected in series, and each of the upper and lower arms including multiple switching devices connected in parallel; a motor driven by the inverter circuit to generate steering torque; and a control device configured to control the inverter circuit. When detecting a fault in at least one of the multiple switching devices connected in parallel in any of the arms during use of a vehicle, the control device drives the remainder of the multiple switching devices in the arm where the fault is detected, until the vehicle is brought to a prescribed vehicle non-use state. The control device restricts driving of the remainder of the multiple switching devices when the vehicle is brought to a vehicle use state from the prescribed vehicle non-use state.

主权项

1. A drive system comprising:
an inverter circuit including switching circuits for multiple phases, each of the switching circuits including an upper arm and a lower arm connected in series, and each of the upper arm and the lower arm including multiple switching devices connected in parallel; a motor driven by the inverter circuit to generate steering torque; and a control device configured to control the inverter circuit, wherein when detecting a fault in at least one of the multiple switching devices connected in parallel in any of the arms during use of a vehicle, the control device drives the remainder of the multiple switching devices in the arm in which the fault is detected, until the vehicle is brought to a prescribed vehicle non-use state, and the control device restricts driving of the remainder of the multiple switching devices when the vehicle is brought to a vehicle use state from the prescribed vehicle non-use state.