[특허]Direct axis aiding permanent magnets for a laminated synchronous motor rotor

Direct axis aiding permanent magnets for a laminated synchronous motor rotor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02K-021/12
출원번호	US-0829269 (1977-08-31)
발명자 / 주소	Steen Charles R. (Novelty OH)
출원인 / 주소	Reliance Electric Company (Cleveland OH 02)
인용정보	피인용 횟수 : 85 인용 특허 : 0

초록 ▼

A permanent magnet rotor for a permanent magnet synchronous-run induction-state motor is disclosed. The rotor has Rare Earth magnets disposed in apertures in unitary laminations and parallel to a tangent to the shaft. The magnets are magnetized outwardly so that the direct flux of the magnets is additive to the direct axis flux of the stator at no load. The rotor has a squirrel cage winding and the ends of each magnet aperture are in communication through a flux barrier space to the inner end of an adjacent conductor bar aperture of the squirrel cage winding. The unitary laminations each have an even plurality of radially directed reinforcing ribs disposed along the magnetic neutral axes. The flux barriers are wide relative to the circumferential width of the reinforcing ribs for a minimum of circumferential leakage flux. The leakage flux from one magnet radially through a rib is in opposition to the leakage flux through that rib from the adjacent magnet for substantially zero net leakage flux therein.

대표청구항 ▼

A rotor for a permanent magnet synchronous motor having a stator developing a rotating direct axis flux comprising, in combination, a shaft journalled about an axis, magnetically permeable inner and outer portions of said rotor defining a plurality of magnet apertures, a plurality of magnets in said magnet apertuRes, said inner portion lying between said magnets and said shaft and said outer portion lying between said magnets and the outer periphery of said rotor, said magnets being magnetized to establish an even plurality of magnetic poles on the periphery of said rotor by the flux of said magnets and with the flux of said magnets being additive to the direct axis flux of the stator at no load, and a plurality of reinforcing ribs disposed substantially along the magnetically neutral axes intermediate the magnetic poles mechanically interconnecting said inner and outer portions for resisting centrifugal force on said outer portion during rotation.

이 특허를 인용한 특허 (85)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Direct axis aiding permanent magnets for a laminated synchronous motor rotor 원문보기

초록 ▼

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연구과제 타임라인

이 특허를 인용한 특허 (85)

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Direct axis aiding permanent magnets for a laminated synchronous motor rotor 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (85)

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