Title:
OPEN WINDING MOTOR DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/054199
Kind Code:
A1
Abstract:
An embodiment of the present invention is provided with: a primary-side inverter 1 that is connected to three of six output terminals included in a motor 10 having an open winding structure in which three-phase windings are disposed independently of each other; and a secondary-side inverter 2 that is connected to the remaining three output terminals. A control device 12 controls a rotation speed of the motor 10 and a current which flows in the motor 10 by controlling the primary-side and secondary-side inverters 1, 2. DC power is supplied to the inverters 1 and 2, and the control device 12 performs PWM control of the inverters 1 and 2 by a switching pattern in which the numbers of phases for IGBTs 3 to turn ON become equal to each other. In one cycle of the electric angle of the motor 10 over a plurality of carrier cycles of the PWM control, a switching pattern is set such that only an upper IGBT 3 continues to be turned ON in one phase of a three-phase output, only a lower IGBT 3 continues to be turned OFF in another one phase, and ON, OFF phases of the upper, lower IGBTs 3 are reverse to each other in an alternate manner in the remaining one phase.
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Inventors:
KANAMORI MASAKI (JP)
UCHIYAMA YOSHITAKA (JP)
KATO KEIICHI (JP)
YAMAMOTO KENTA (JP)
UCHIYAMA YOSHITAKA (JP)
KATO KEIICHI (JP)
YAMAMOTO KENTA (JP)
Application Number:
PCT/JP2020/034281
Publication Date:
March 17, 2022
Filing Date:
September 10, 2020
Export Citation:
Assignee:
TOSHIBA CARRIER CORP (JP)
International Classes:
H02P27/08
Domestic Patent References:
| WO2019142877A1 | 2019-07-25 | |||
| WO2016125557A1 | 2016-08-11 |
Foreign References:
| JP2020096457A | 2020-06-18 | |||
| JP2020096520A | 2020-06-18 | |||
| JP2020031458A | 2020-02-27 |
Attorney, Agent or Firm:
SATO INTERNATIONAL PATENT FIRM (JP)
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