Zaidan Hojin Handotai Kenkyu Shinkokai

Tohoku Electric Power Company, Inc.

Tsuken Electric Ind. Co., Ltd.

Kiyoo Mitsui

Takashige Tamamushi

Koichi Mitamura

Jun-ichi Nishizawa

Junichi Nishizawa

Kimio Miura

Hiroo Takahashi

Mitsuo Ikehara

Toyota Wako

Sinpei Maruyama

This invention relates to a PWM power converter for switching a plurality of bridge-connected semiconductor switching elements based on PWM signals. As the semiconductor switching elements, elements with a low ON voltage and small conduction loss, and elements with a small switching loss and capable of high-speed switching are combined to improve power conversion efficiency.

PWM power converter using mixed bipolar and static induction transistors

The present invention provides an optically controlled power converting apparatus using light trigger/light quench electrostatic induction thyristors, as switching elements, which can execute the switching operations at a high speed being when they are supplied with light trigger pulses and light quench pulses. By supplying the light trigger pulses and light quench pulses at the timings corresponding to the pulse width modulation, the light trigger/light quench electrostatic induction thyristors can perform predetermined power converting operations.

Optically controlled power converting apparatus

Growing community of inventors

Sendai, Japan

Kiyoo Mitsui