Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Kabushiki Kaisha Toyota Chuo Kenkyusho

Kosuke Aiki

Masaki Okamura

Takaji Umeno

Hiroyuki Yamaguchi

Hideo Nakai

Yoshiaki Ito

Kisaburo Hayakawa

Hideto Inagaki

Makoto Taniguchi

Eiji Yamada

Kazutaka Tatematsu

Yoshihiro Mizuno

Norimoto Minoshima

Eiji Tsuchiya

Kazunari Moriya

Tatsuya Uematsu

Toshihiko Yoshida

Kenji Endo

A hybrid vehicle includes a first gear mechanism which transmits the power of the internal combustion engine to the motor generator side, while accelerating the power between the internal combustion engine and the motor generator; a second gear mechanism which transmits the power of the motor generator side to a vehicle drive shaft, while decelerating the power between the motor generator and the vehicle drive shaft; a third gear mechanism which transmits the power of the drive motor side to the vehicle drive shaft, while decelerating the power between the drive motor and the vehicle drive shaft; a clutch mechanism which switches connection and disconnection between the drive shaft of the motor generator and the first gear mechanism or the second gear mechanism; and a control device which controls the clutch mechanism. The motor generator is not connected to both the vehicle drive shaft and the internal combustion engine at the same time at the time of normal traveling.

Hybrid vehicle

A series hybrid vehicle is equipped with an engine, a first motor generator, and a second motor generator. The vehicle has a reduction gear that is a first power transmission mechanism for engaging the engine with the first motor generator, a reduction gear that is a second power transmission mechanism for engaging the first motor generator with a vehicle drive shaft, and a clutch that is capable of engaging the first motor generator with one of the two reduction gears in a switching manner. The vehicle further has a transmission that switches between transmission gear ratios and engages the second motor generator with the vehicle drive shaft.

Series hybrid vehicle

When a rotational difference is generated between a left driving wheel and a right driving wheel, by controlling the frequency fof alternating currents to be fed to stator windings of first and second induction machines by a shared inverter, torque distribution to the left driving wheel and the right driving wheel is controlled.

Driving power distribution device

According to input parameters, a controller carries out: generation of a voltage command value for each of d- and q-axes; conversion of the voltage command value for each of the d- and q-axes into a voltage command value for each of the multiphase windings; and control of a multiphase inverter based on the voltage command value for each of the multiphase windings. The controller adds, to the voltage command value for the q-axis, a first compensation voltage value for compensating torque ripples to thereby output a compensated voltage command value for the q-axis. The first compensation voltage value contains m-th harmonic components in the AC motor and varies depending on the rotational angle of the rotor, the m corresponding to the number of phase of the multiphase windings. The controller uses, as the voltage command value for the q-axis, the compensated voltage command value for the q-axis.

Motor drive system using potential at neutral point

In a rotating electrical machine, when a stator winding is wound in concentrated winding, an improvement in performance is achieved by reducing a magnetomotive force harmonic without reducing a fundamental wave magnetic flux generated by a stator. A rotating electrical machine () includes a rotor (), and two stators () opposed with the rotor () being interposed therebetween either on both sides of the rotor () in the axial direction or on both sides of the rotor () in the radial direction. Stator windings () provided in a plurality of portions in the circumferential direction of each stator () are wound in concentrated winding. The directions of magnetic fluxes generated by stator windings () having the same phase in the stators () are in mutually opposite directions with respect to either the axial direction or the radial direction. The stator windings () having the same phase in the stators () are arranged to be shifted from each other by 180 degrees in electrical angle in the circumferential direction.

Rotating electrical machine

Growing community of inventors

Nagakute, Japan

Kosuke Aiki