Denso Corporation

Denso Trim Co., Ltd.

Kouichi Nagata

Makoto Taniguchi

Kanechiyo Terada

Masahiko Osada

Osamu Naitou

Masaaki Ohno

Yasuhiro Fuwa

An alternating current generation system is provided. In the system, in a rotor, a plurality of detection subject portions are arrayed along a circumferential direction in correspondence to reversal states of the magnetic poles in a plurality of magnetized portions. A detecting unit is disposed opposing the rotor so as to generate an output signal corresponding to passage state of the detection subject portions. A phase control unit outputs, to a power converter, a control signal to perform phase control of switching elements depending on the rotation phase of the rotor, based on the output signal from the detecting unit.

Alternating current generation system accompanying power conversion

A control apparatus for a motor-generator includes a stator including multi-phase coils, a rotor, a multi-phase inverter one arm of which includes a switch element and a free-wheeling element, and a power supply connected between a neutral point of the coils and a negative electrode of the inverter. When the switch elements are driven by rectangular wave, the low-side switch element connected to the high-side switch element is subject to PWM switching control while the high-side switch element is off. When a time point, at which the high-side switch element is turned off, is defined as a base point, if &#x3b1; is defined as a time when switching of the low-side switch element starts, and &#x3b2; is defined as a time when the switching ends, &#x3b2;-&#x3b1; is 120 degrees in electrical degree or more, &#x3b1; is more than 0 degrees, and &#x3b2; is less than 180 degrees.

Control apparatus for motor-generator

Growing community of inventors

Kariya, Japan

Kouichi Nagata