Invention Grant
- Patent Title: Brushless PM machine construction enabling low coercivity magnets
- Patent Title (中): 无刷PM机构构造能够实现低矫顽磁铁
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Application No.: US13407084Application Date: 2012-02-28
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Publication No.: US08928198B2Publication Date: 2015-01-06
- Inventor: Jon Lutz , Josh Ley
- Applicant: Jon Lutz , Josh Ley
- Applicant Address: US CO Longmont
- Assignee: UQM Technologies Inc.
- Current Assignee: UQM Technologies Inc.
- Current Assignee Address: US CO Longmont
- Agency: Buchanan Ingersoll & Rooney PC
- Main IPC: H02K21/12
- IPC: H02K21/12 ; H02K15/03 ; H02K1/27

Abstract:
The present disclosure provides a brushless permanent magnet machine which includes an essentially circular shaped rotor, and a pair of magnets arranged in the rotor. The magnets are each U-shaped and have a thickness direction extending along a contour of the corresponding magnet between the opposite poles of the corresponding magnet, respectively. The magnets are each composed of a non-rare earth material having a lower coercivity than a rare earth material. A direction of magnetization of each of the pair of magnets is parallel to the thickness direction of the corresponding magnet. The present disclosure also provides a method of manufacturing such a brushless permanent magnet machine.
Public/Granted literature
- US20120217834A1 BRUSHLESS PM MACHINE CONSTRUCTION ENABLING LOW COERCIVITY MAGNETS Public/Granted day:2012-08-30
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