Aisin Aw Co., Ltd.

Yoshinori Oono

Jin Izawa

Subrata Saha

Kazuo Aoki

Keisuke Nishimura

Kazuhiro Tanaka

Kazuma Hasegawa

Takashi Yoshida

Isao Fujiwara

Daisuke Ogino

Yoshinari Nakagawa

Seiichi Kinugasa

Masuho Sakakibara

An electric motor control device includes an inverter that supplies an output of a primary-side DC power supply to an electric motor to control driving of the electric motor; a converter that includes a voltage increasing power supply device that increases a voltage of the primary-side DC power supply to supply the inverter with the increased voltage as a secondary voltage, and a regenerative power supply device that reversely supplies regenerative power from the inverter to the primary-side DC power supply; a secondary-side target voltage determination unit; a converter control unit; and an electric motor control unit.

Electric motor control device, drive device and hybrid drive device

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.

Rotating electrical machine control system and vehicle drive system

A rotating electrical machine control device includes an inverter; a resolver; a unit; a three-phase/two-phase modulation switching unit; and a motor control unit that switches to a two-phase modulation in a specific region where an electric noise given to the resolver by a rotating electrical machine is large, even in a region where the modulation ratio is smaller than the three-phase/two-phase modulation switching boundary.

Rotating electrical machine control device

An electric motor control device includes a direct current power source; an inverter interposed between an electric motor and the direct current power source, the inverter device controlling an exchange of electric power therebetween; an inverter control unit that generates PWM pulses having a duty ratio corresponding to voltage command signals and sends the PWM pulses to the inverter in order to switch the inverter; a frequency changing unit that changes a carrier frequency of the PWM pulses generated by the inverter control unit in a manner corresponding to a frequency control signal; and a motor control unit.

Electric motor control device, electric vehicle, and hybrid electric vehicle

A vehicle including an electrically powered machine, a parking gear mechanically connected to the electrically powered machine, a parking lock mechanism that locks the parking gear, a sensor that detects a rotor position of the electrically powered machine, and a controller that reads the rotor position when a parking range is selected and judges, on the basis of a change in the rotor position, whether a failure has occurred in the parking lock mechanism.

Growing community of inventors

Nukata, Japan

Yoshinori Oono