The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2020
Filed:
Aug. 18, 2016
Asmo Co., Ltd., Shizuoka-ken, JP;
Yoko Tateishi, Kosai, JP;
Yoshiaki Takemoto, Toyohashi, JP;
Masashi Matsuda, Kakegawa, JP;
Hironari Suzuki, Kosai, JP;
Seiya Yokoyama, Toyohashi, JP;
Shigemasa Kato, Toyohashi, JP;
Kazunori Shimada, Toyohashi, JP;
Takahiro Tsuchiya, Toyohashi, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
This motor includes a two-layer rotor, a two-layer stator and a control unit. An A-phase rotor includes a pair of rotor cores and a field magnet. A B-phase rotor includes a pair of rotor cores and a field magnet. An A-phase stator includes a pair of stator cores and an A-phase winding. A B-phase stator includes a pair of stator cores and a B-phase winding. The control unit controls an A-phase input voltage applied to the A-phase winding, and a B-phase input voltage applied to the B-phase winding. The relative arrangement angle of the A-phase stator and the A-phase rotor relative to the B-phase stator and the B-phase rotor is set to an electrical angle of 90 degrees. The control unit applies a leading phase angle to the basic voltage waveforms of the A-phase input voltage and the B-phase input voltage, to set the energization width to at most 180 degrees.