Permanent magnet electric machine with moveable flux-shunting elements

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11121595
APP PUB NO 20200106316A1
SERIAL NO

16700443

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A permanent magnet electric machine (PM machine) for a vehicle or other system includes a rotor assembly, fixed permanent magnets, a stator, an actuator, and one or more repositionable/moveable flux-shunting elements. The flux-shunting element is repositioned to control flux at specific operating points of the PM machine. The rotor assembly has a rotor coaxially surrounding and coupled to a rotor shaft. The permanent magnets are mounted to or in the rotor, and the moveable flux-shunting element is positioned between the rotor shaft and a respective one of the permanent magnets. Inboard and outboard ends of each respective permanent magnet may be oriented toward the rotor shaft and stator, respectively. The actuator selectively positions the moveable flux-shunting element at one or more operating points of the PM machine to vary reluctance in a magnetic circuit formed by the stator and rotor assembly.

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Patent Owner(s)

  • GM GLOBAL TECHNOLOGY OPERATIONS LLC

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rahman, Khwaja M Troy, US 88 1238
Ross, Craig S Ypsilanti, US 66 452
Swales, Shawn H Canton, US 76 795
Tamai, Goro Bloomfield Hills, US 121 2291

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