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Title:
MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/029940
Kind Code:
A1
Abstract:
A motor drive device comprising a first inverter, a second inverter, and a controller. This controller: rotates the motor rotor, when the motor starts, to an initial position by using DC magnetic excitation that supplies DC magnetic excitation current to each phase winding of the motor, from the first and second inverters; and, after this rotation, PWM-controls the switching of the first and second inverters such that the rotation speed of the rotor reaches a target speed. The controller performs DC magnetic excitation whereby the zero-axis current is almost zero.

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Inventors:
NOGI MASAYA (JP)
YOSHIMURA MASAYUKI (JP)
Application Number:
PCT/JP2020/030085
Publication Date:
February 10, 2022
Filing Date:
August 05, 2020
Export Citation:
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Assignee:
TOSHIBA CARRIER CORP (JP)
International Classes:
H02P27/08
Foreign References:
JP2019176554A2019-10-10
JP2018506253A2018-03-01
JP2016073097A2016-05-09
JP4906836B22012-03-28
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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