Denso Corporation

Junji Miyachi

Tatsuru Morioka

Tsuyoshi Yamamoto

Kazunori Watanabe

Tomotaka Suzuki

Takahiro Yamada

Yohei Kondo

Tetsuya Dewa

Yosuke Asako

In a drive apparatus, a transmission unit mounted to a first region stops transmission of a pulse signal from a physical-quantity transmission terminal. The transmission unit transmits, from the failure information transmission terminal, a first signal indicative of an occurrence of the failure associated with the target switch when it is determined that the failure associated with the target switch has occurred, and transmits, from the physical-quantity transmission terminal, a second signal indicative of a content of the failure associated with the target switch. A controller mounted to a second region electrically isolated from the first region detects, based on the pulse signal from the physical-quantity transmission terminal, the physical quantity upon no input of the first signal to the controller. The controller identifies, based on the second signal transmitted from the physical-quantity transmission terminal, the content of the failure upon the first signal being input to the controller.

Drive apparatus for switch

A control device has a unit for determining a controlled phase of a controlled voltage outputted from an inverter to a generator according to a difference between a target torque and an estimated torque of the generator, a unit for calculating an instructed vector norm of the controlled voltage from the target torque, an electrical angular speed of the generator and parameters indicating characteristics of the generator, a unit for correcting the instructed norm to an adjusted vector norm such that a phase of current flowing through the generator in response to the controlled voltage set at the controlled phase and the adjusted norm is controlled to a phase of an instructed current determined from the target torque, and a unit for controlling the generator by controlling the inverter to output the controlled voltage set at the controlled phase and the adjusted norm to the generator.

Control device and control system for electric rotating machine

A control device has a unit for preparing a pattern having first and second periods by comparing a triangular wave and a sine wave having an amplitude ratio set at each value of a modulation factor, and selecting one pattern corresponding to an instructed modulation factor, and a unit for applying a controlled voltage, set at low and high levels in response to first and second periods of the selected pattern, to a generator. The triangular wave has a cycle duration obtained by dividing the cycle duration of the generator by product of 3 and odd number, a crest having a level higher than the sine wave at a timing of each first period, and a trough having a level lower than the sine wave at a timing of each second period.

Control device for electric rotating machine and method of controlling the machine

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Anjo, Japan

Junji Miyachi