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Patent Searching and Data


Title:
MOTOR CONTROL DEVICE, MECHATRONIC INTEGRATED UNIT, HYBRID SYSTEM, AND ELECTRIC POWER STEERING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/085351
Kind Code:
A1
Abstract:
This motor control device controls the driving of an AC motor that is connected to a power converter for converting power from DC power to AC power, and that is driven using the AC power. The motor control device comprises: a carrier wave generation unit for generating carrier waves; a carrier wave frequency adjustment unit for adjusting the frequency of the carrier waves; and a gate signal generation unit for performing pulse width modulation on a voltage command that corresponds to a torque command using the carrier waves, and generating a gate signal for controlling the operation of the power converter. The phase difference between the voltage command and the carrier waves is randomly varied.

Inventors:
TSUKAGOSHI TAKAYA (JP)
TANIGUCHI SHUN (JP)
HARA TAKAFUMI (JP)
Application Number:
PCT/JP2021/034639
Publication Date:
April 28, 2022
Filing Date:
September 21, 2021
Export Citation:
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Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02K7/116; H02K11/33; H02P21/06; H02P27/08
Domestic Patent References:
WO2016098410A12016-06-23
WO2010137162A12010-12-02
Foreign References:
JP2018004246A2018-01-11
US20070247091A12007-10-25
US20170025929A12017-01-26
JP2006136138A2006-05-25
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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