Title:
回転電機システム
Document Type and Number:
Japanese Patent JP7353930
Kind Code:
B2
Abstract:
Provided is a dynamo-electric machine and a dynamo-electric machine system that can improve the detection accuracy of the absolute prescribed rotation position of a rotor. This dynamo-electric machine 1 comprises a rotor 4, and first to fourth Hall ICs 38a, 38b, 38c, 38d. The rotor 4 has a plurality of magnets 16 for which different magnetic poles are alternately aligned along a rotation direction RD. Each Hall IC 38a, 38b, 38c, 38d faces the plurality of magnets 16, and outputs a signal according to the magnetic pole of each magnet 16. A prescribed different magnetism magnet 16c has a main magnetic part 18, and a different magnetic part 19 that has different magnetic characteristics from the main magnetic part 18 and is displaced from the rear side end surface of the main magnetic part 18 to the front side in the rotation direction RD. The first Hall IC 38a outputs a signal that corresponds to the main magnetic part 18 and the different magnetic part 19. Each Hall IC 38b, 38c, 38d outputs a signal that corresponds to the main magnetic part 18 without outputting a signal that corresponds to the different magnetic part 19.
More Like This:
| JPH04150757 | BRUSHLESS DIRECT CURRENT MOTOR |
| WO/1993/005564 | IMPROVED APPARATUS FOR COMMUTATION OF AN ELECTRIC MOTOR |
| WO/2005/076438 | MOTOR DRIVE DEVICE |
Inventors:
Takanori Matsui
Tomoya Ishikawa
Tomoya Ishikawa
Application Number:
JP2019206109A
Publication Date:
October 02, 2023
Filing Date:
November 14, 2019
Export Citation:
Assignee:
Mitsuba Co., Ltd.
International Classes:
H02K29/08; H02K11/215
Domestic Patent References:
| JP2013102667A | ||||
| JP2011030314A |
Foreign References:
| WO2017122670A1 |
Attorney, Agent or Firm:
Kazuzumi Nishizawa
Shingo Suzuki
Koichiro Kamada
Shingo Suzuki
Koichiro Kamada
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