Aisin Aw Co., Ltd.

Kazuhiro Tanaka

Jin Izawa

Kazuo Aoki

Yoshinori Oono

Subrata Saha

Daisuke Ogino

A control system includes an electric rotating machine; a driving circuit that is connected to a DC power supply, the driving circuit includes a frequency conversion unit configured such that, when the electric rotating machine is to be driven in a power running mode, the frequency conversion unit converts an output of the DC power supply into AC electric power, and when the electric rotating machine is to be driven in a regenerative operation mode, the frequency conversion unit converts an output of the electric rotating machine into DC electric power; and a control unit that controls the driving circuit, wherein the control unit judges whether a connection between the DC power supply and the driving circuit is being maintained, and is configured such that, when the connection is not being maintained, regenerative electric power generated by the electric rotating machine is reduced by controlling the driving circuit.

Electric rotating machine control system and vehicle driving system including the electric rotating machine control system

A hybrid drive system includes an input member connected to an engine; an output member connected to a wheel; a first rotating electric machine; a second rotating electric machine; a differential gearing; a controller that controls the first rotating electric machine and the second rotating electric machine; and an electric power supplier that supplies the first rotating electric machine and the second rotating electric machine with electric power.

Hybrid drive system

A rotating electrical machine control system includes a rotating electrical machine, a frequency conversion portion, a voltage conversion portion, a torque limitation portion, and an abnormality detection portion. The torque limitation portion limits generation of a positive torque in a region of less than a rotational speed lower limit threshold value where a rotational speed of the rotating electrical machine is less than zero, and sets a region in which the positive torque is generated to a region of the rotational speed lower limit threshold value or greater, and the torque limitation portion limits generation of a negative torque in a region of greater than a rotational speed upper limit threshold value where the rotational speed of the rotating electrical machine is greater than zero, and sets a region in which the negative torque is generated to a region of the rotational speed upper limit threshold value or less.

Growing community of inventors

Chiryu, Japan

Kazuhiro Tanaka