[특허]Electrical drive systems

Electrical drive systems 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02P-007/36
출원번호	US-0220070 (1988-07-15)
우선권정보	IE-0001629 (1985-06-28)
발명자 / 주소	Buckley Maurice (Blackrock IEX) Stone Arthur (Kilmallock IEX) Murray Aengus (Dublin IEX)
출원인 / 주소	Kollmorgen Technologies Corporation (Dallas TX 02)
인용정보	피인용 횟수 : 38 인용 특허 : 0

초록 ▼

A direct current brushless electric motor has a rotor, and a stator with inwardly extending teeth, between each pair of which a winding slot is defined. The radially inward face of each tooth has a dummy slot shaped so the reluctance forces between rotor and stator due to the presence of the dummy slots are the same as those due to the winding slots. Motor control arrangement incorporates a current feedback loop based on the incoming phase of each phase combination in the phase energization sequence in a driving mode and phase changeover may be initiated by Hall devices, two for each transition point, underlying the axial ends of the rotor magnets. The control arrangement may incorporate a pulse width modulation power supply permitting the establishment of bias currents under motor standstill conditions.

대표청구항 ▼

A direct current electric motor comprising a stator having a plurality of winding slots, a plurality of stator teeth defined between the winding slots, and a plurality of dummy slots, each dummy slot comprising a notch in a radially inner face of a stator tooth, and a rotor having a plurality of poles, the stator surrounding the rotor and having an internal periphery, and the rotor having an external periphery, an airgap existing between said internal periphery of the stator and said external periphery of the rotor and said airgap having a radial dimension between said external periphery of the rotor and said internal periphery of the stator, the rotor being mounted for displacement relative to the stator, reluctance forces prevailing between the rotor and the stator as a result of presence of the winding slots and the dummy slots, and these forces varying as the poles of the rotor pass by the slots, the stator having two dummy slots between a pair of adjacent winding slots at each of a first plurality of locations which are equally spaced around said internal periphery of the stator, the stator being provided with one dummy slot between a pair of adjacent winding slots at each of a second plurality of locations around said internal periphery of the stator, a plurality of said second plurality of locations being interposed between each of said first plurality of locations and another of said first plurality of locations spaced from said each of said first plurality of locations around said internal periphery of the stator, and each notch of said dummy slot being dimensioned to behave similarly to a winding slot in respect of reluctance torque, each dummy slot having a width dimension which is substantially the same as the width dimension of a winding slot and a depth dimension which is large compared with the radial dimension of said airgap between said external periphery of the rotor and said internal periphery of the stator, so that during relative displacement of the rotor and stator, the reluctance forces prevailing between the rotor and the stator due to the presence of the dummy slots are substantially the same as the reluctance forces prevailing between the rotor and the stator due to the presence of the winding slots.

이 특허를 인용한 특허 (38)

Handlon, Brian Edward; Carter, Jeffrey, Brushless DC motor control and method.
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Selewski, Steven; Howie, Mark; Holling, George H., Brushless motor.
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Ionel, Dan M.; Dellinger, Stephen J., Brushless permanent magnet machine with axial modules of rotor magnetization skew and method of producing the same.
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Ionel,Dan M.; Dellinger,Stephen J., Brushless permanent magnet machine with axial modules of rotor magnetization skew and method of producing the same.
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Ionel, Dan M.; Dellinger, Stephen J., Brushless permanent magnet machine with reduced cogging and torque ripple and method of producing the same.
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Ionel,Dan M.; Dellinger,Stephen J., Brushless permanent magnet machine with reduced cogging and torque ripple and method of producing the same.
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Ionel,Dan M.; Dellinger,Stephen J., Brushless permanent magnet machine with reduced cogging and torque ripple and method of producing the same.
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Benoit Derouane FR; Sunil Keshava Murthy ; Tomy Sebastian ; Buyun Liu, Commutation system for torque ripple minimization.
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Cheng, Mao-Hsin, Controller and method for adaptively adjusting motor driving current waveforms.
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Vaez-Zadeh, Sadegh; Zahedi, Bijan, Efficiency maximization control and variable speed drive of single phase induction motors.
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Ionel,Dan M.; Dellinger,Stephen J.; Lesak,Alan E., Electric motor having a stator.
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Chin, Robert; Mantere, Juhani, Electrical machine with circumferentially skewed rotor poles or stator coils.
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Ionel,Dan M.; Dellinger,Stephen J., Electrical machine with magnetized rotor.
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Ham Craig A. ; Unterborn Ralph J., Externally-wound stator with improved magnetic transition.
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Totaro, Philip; Deng, Fang; Saban, Daniel M.; Lee, Seong T.; Lokhandwalla, Murtuza; Hetrick, Joel; Kinnunen, Janne, Low axial force permanent magnet machine and magnet assembly for permanent magnet machine.
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Leung Mankong H. (Kokomo IN) Skiver Steven G. (Kokomo IN), Method and apparatus for induced pole stepper motor.
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Cook Keith R. (Beavercreek OH), Method and apparatus for wiping a windshield.
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Tranovich Stephen J., Method of controlling rotary position of a torque motor.
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Savage Jack Windfield ; Suriano John Riden, Motor and control for windshield wiper system.
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Takeuchi, Kesatoshi, Motor and drive control system thereof.
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Philipp Chris, Motor control circuit for regulating a D.C. motor.
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Sakamoto,Keiji; Maeda,Hisashi, Motor control unit.
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Brodsky Michael A. ; Krause Kenneth W., Motor controlled surgical system.
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Koh, Siyurn; Koh, Jungwoo; Choi, Byungdae; Park, Wanyoung; Lim, Junghyuk; Chae, Sungbok; Rhyu, Sehyun; Lee, Jeongjong; Gu, Bongwan; Choi, Junhyuk, Motor unit and grill shutter driving device including the same.
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Elliot James ; Abbas Mohamed ; Suriano John R. ; Holmes Thomas W., Noise suppression in PWM-driven DC motor.
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Elliott James ; Abbas Mohamed ; Suriano John R. ; Holmes Thomas W., Noise suppression in PWM-driven DC motor.
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Suriano John Riden, Reduced speed growth in windshield wiper motor.
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Mipo, Jean Claude; Bouarroudj, Lilya; Foggia, Albert, Rotary electrical machine having loss reduction means.
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Popov, Vladimir Vladimirovich, Rotor assembly and stator assembly for an electrical machine.
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Charles C. Hansen, III ; John A. Yencho ; Martin F. Kozi ; Orval J. Kuhn, Jr., Sealed motor driven valve.
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Garcia Fernando,BRX, Subsynchronous reluctance electrical machine.
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Watts John Christopher, System and method for driving wipers in a windshield wiper system.
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Jiang, Zhenyu, System and method for improving VCT closed-loop response at low cam torque frequency.
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Yokochi, Takanori, Three-phase electric-motor winding with differing turn numbers forming fractional effective turns.
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Ham Craig A. ; Mack William R. ; Unterborn Ralph J. ; Weller Jeffrey T. ; Zhou Peter S., Vehicle window drive system and method.
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Ham Craig A. ; Mack William R. ; Unterborn Ralph J. ; Weller Jeffrey T. ; Zhou Peter S., Vehicle window drive system and method.
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Chen, Jie; Herzon, Aaron D.; Reifel, Allan J.; Chen, Yi, Ventilation airflow rate control.
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Danish Peter John ; Lombardo Frank Richard ; Jones Christopher Howard, Windshield wiper motor for use in a vehicle and method for manufacturing.
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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

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Electrical drive systems 원문보기

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Electrical drive systems 원문보기

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이 특허를 인용한 특허 (38)

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