Honda Motor Co., Ltd.

Junji Kato

Yuji Saito

Hiroshi Murakami

Akihiro Yamamoto

Tetsu Sugiyama

Hideki Inoue

Masaharu Hosoda

Yasuyuki Danjo

Yuichi Nakamura

A vehicle includes a first drive device and a second drive device. The first drive device includes a motor, a motor control device, a connection-disconnection device, and a connection-disconnection device controller. When the vehicle is driven in a state where a driving force of the first drive device is substantially zero, or the vehicle is driven only by a driving force of the second drive device, the connection-disconnection device controller couples the connection-disconnection device to establish a connected state of the connection-disconnection device. The motor control device is configured to perform loss reduction control on the motor to reduce at least one of a loss of the motor and a loss in a power transmission path in power transmitted to the first driving wheel, by establishing the connected state of the connection-disconnection device.

Vehicle

When a short-circuit failure of any of switch portions () including switch elements () and parallel-connected feedback diodes () of an inverter circuit () is detected during the operation of a motor (), a switch portion () where the short-circuit failure has occurred is checked for whether it is on the positive polarity side or the negative polarity side. The switch elements () are so controlled that all the switch portions () on the same polarity side as where the short-circuit has occurred are brought into a conducted state and all the others are disconnected. This prevents a large electric current from flowing into each switch portion of the inverter circuit without requiring any switch to block the power distribution between a motor and the inverter circuit when a short-circuit failure of the switch portion of the inverter circuit occurs.

Controller for motor, and vehicle

Growing community of inventors

Wako, Japan

Junji Kato