[특허]Brushless generator having AC excitation in generating and starting modes

Brushless generator having AC excitation in generating and starting modes 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02N-011/04 H02P-009/06
출원번호	US-0453576 (1989-12-20)
발명자 / 주소	Glennon Timothy F. (Rockford IL) Mehl Byron R. (Belvidere IL) Thollot Pierre (Rockford IL) Krinickas Alexander (Rockford IL)
출원인 / 주소	Sundstrand Corporation (Rockford IL 02)
인용정보	피인용 횟수 : 58 인용 특허 : 0

초록 ▼

An excitation system for a brushless generator having a main generator portion including a field winding disposed on a rotor and an armature winding disposed in a stator includes an exciter portion having a set of polyphase exciter field windings disposed in the stator and an armature winding disposed on the rotor and coupled to the main generator portion field winding. A first power converter is coupled to the main generator armature winding and a second power converter is coupled to the set of polyphase exciter field windings. Contactors are operable in a starting mode of operation to couple a source of electrical power to the first and second power converters and are operable in a generating mode to disconnect the source of electrical power from the first and second power converters. A control unit controls the power converters such that the power converters provide AC power to the main generator armature winding and to the set of polyphase exciter field windings during operation of the starting mode so that the rotor is accelerated. The control unit operates the power converters in the generating mode such that the second power converter provides AC power to the set of polyphase exciter field windings and the first power converter develops constant-frequency AC power.

대표청구항 ▼

An excitation system for a brushless generator having a main generator portion including a field winding disposed on a rotor and which receives field current and an armature winding disposed in a stator wherein the rotor is movable with respect to the stator and a permanent magnet generator (PMG) having an armature winding in which control power is developed wherein the generator is operable in a generating mode to convert motive power into electrical power and in a starting mode to convert electrical power provided to the main generator armature winding into motive power, comprising: an exciter portion having a set of polyphase exciter field windings disposed in the stator and an armature winding disposed on the rotor and coupled to the main generator portion field winding; a source of electrical power; a first power converter coupled to the main generator armature winding; a second power converter coupled between the PMG armature winding and the set of polyphase exciter field windings; means operable in the starting mode for coupling the source of electrical power to the first and second power converters and operable in the generating mode for disconnecting the source of electrical power from the first and second power converters; and means coupled to the first and second power converters for controlling same such that the power converters provide AC power to the main generator armature winding and to the set of polyphase exciter field windings during operation in the starting mode so that the rotor is accelerated and such that the second power converter develops AC power from the control power and provides same to the set of polyphase exciter field windings and the first power converter develops constant frequency AC power during operation in the generating mode. A brushless generator operable in a generating mode to convert motive power into electrical power, comprising: a rotor; a main field winding on the rotor; an exciter armature winding on the rotor, the exciter armature winding being electrically coupled to the main field winding; a stator; a main armature winding in the stator, the main armature winding being magnetically coupled to the main field winding on the rotor; a set of exciter field windings magnetically coupled to the exciter armature winding; and means for providing relatively low-frequency AC power to said exciter field windings when the generator is operating in the generating mode, said relatively low frequency being on the order of three Hz.

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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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Brushless generator having AC excitation in generating and starting modes 원문보기

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Brushless generator having AC excitation in generating and starting modes 원문보기

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이 특허를 인용한 특허 (58)

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