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Patent Searching and Data


Title:
MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/065581
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a motor drive device not only capable of, during the failure of a certain phase among a plurality of phases, continuing operation by the remaining phases but also capable of, during normal time, a highly efficient operation with a small power loss. Accordingly, the motor drive device of the present invention drives a plurality of coils of a motor by an inverter, wherein: a first neutral point and a second neutral point which are different from the inverter are preformed by being connected in parallel with respect to the plurality of coils; first MOSFETs having the cathodes of body diodes on the coil side are provided between the first neutral point and the connected coils; and second MOSFETs having the anodes of body diodes on the coil side are provided between the second neutral point and the connected coils.

Inventors:
YANO Tomohiko (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, JP)
Application Number:
JP2020/035553
Publication Date:
April 08, 2021
Filing Date:
September 18, 2020
Export Citation:
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Assignee:
HITACHI ASTEMO, LTD. (Takaba Hitachinaka-sh, Ibaraki 03, JP)
International Classes:
H02P27/06; H02M7/48; H02P25/22
Attorney, Agent or Firm:
POLAIRE I.P.C. (Nihonbashikayabacho 2-chome Chuo-k, Tokyo 25, JP)
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