Kabushiki Kaisha Toshiba

Toshiba Corporation

Mitsuhiro Numazaki

Takashi Takagi

Shinichi Toda

Yosuke Nakazawa

Min Lin

Ikuo Yasuoka

Makoto Takeda

Akihiko Ujiie

Takahiko Minami

Hidetoshi Manabe

Yosuke Nakazaka

According to one embodiment, an electronic device includes a positive electrode, a negative electrode, a first terminal, a second terminal, a first plurality of switching elements and anti-parallel diodes coupled between the positive electrode and the first terminal and the second terminal, a second plurality of switching elements and anti-parallel diodes coupled between the negative electrode and the first terminal and the second terminal and a PiN diode coupled between the positive electrode and the negative electrode with reverse polarity.

Power conversion device

A system and method for a vehicle control system is disclosed herein. The system includes an inverter circuit, a permanent magnet synchronous motor, and a crossover connected between the inverter circuit and the permanent magnet synchronous motor. The system may also include at least one current sensor installed between the inverter circuit and the permanent magnet synchronous motor. A contactor may also be connected between the inverter circuit and the permanent magnet synchronous motor and may pass or shut off electricity between the inverter circuit and the permanent magnet synchronous motor. The system may also include a control unit connected to the contactor and the current sensor. The control unit may detect a current abnormality using information from the current sensor and open the contactor if an abnormality is detected.

Vehicle control system

An electric vehicle control system for controlling a plurality of main motors for driving an electric vehicle and an auxiliary circuit. The control system includes a first circuit breaker, and a first main power converter for receiving a DC power for converting the DC power into a first AC power to supply the first AC power to the first main motor. The control system further includes a second circuit breaker, and an auxiliary power converter for receiving the DC power for converting the DC power into a second AC power to supply the second AC power to the auxiliary circuit. The control system also includes a second main power converter for receiving the DC power for converting the DC power into a third AC power to supply the third AC power to one of the second main motor and the auxiliary circuit, respectively. The control system further includes a switch device for switching the second main power converter such that when the auxiliary power converter is normal the second main converter is connected to the second main motor to supply the third AC power, and when the auxiliary power converter is broken down the input side of the second main power converter is connected to the second circuit breaker and the output side of the second main power converter is connected to the auxiliary circuit to supply the third AC power.

Power conversion control system for plural electric motors and auxiliary

Growing community of inventors

Tokyo, Japan

Mitsuhiro Numazaki