[특허]Resonant power supplies

Resonant power supplies 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02M-003/335
출원번호	US-0926051 (1992-08-05)
우선권정보	NZ-0239366 (1991-08-12); NZ-0239533 (1991-08-23)
발명자 / 주소	Boys John T. (Birkdale NZX) Green Andrew W. (Papatoetoe both of NZX)
출원인 / 주소	Auckland Uniservices Limited (Auckland NZX 03)
인용정보	피인용 횟수 : 128 인용 특허 : 0

초록 ▼

This resonant power supply produces a varying magnetic field from a resonant inductor. Two active switches drive, but remain outside, a resonant circuit, also including resonant capacitor. A phase-splitting transformer provides, via a decoupling inductor, one connection for a power supply; the return is through the active switches, which are either off or are from time to time driven alternately by the controller so as to maintain the resonant current in the resonant circuit. Applications include induction heating and induction hobs for cooking, and also a power source for inductively powered vehicles (or other inductively powered devices) adjacent to an inductive pathway.

대표청구항 ▼

A resonant power supply suitable for generating a periodically varying magnetic field comprising: a first two-terminal inductive unit, and a two-terminal capacitative unit each terminal of which is connected to a corresponding terminal of said first inductive unit, thereby comprising an electrically resonant circuit having a natural resonant frequency, means to convert a first supply of electricity into a second supply of electricity substantially at a constant current, said means including a source of said second supply of electricity and a second two-terminal inductive unit in series with the source, the source and the second inductive unit having a pair of output terminals, a three-terminal inductive unit having two outer terminals and a center-tapped terminal, presenting a relatively high reactance at the resonant frequency so that in use substantially none of the resonating current flows through it, each outer terminal being connected to a corresponding terminal of the resonant circuit, while the center tapped terminal is connected to one of said output terminals, a pair of controllable switching devices, each capable of a closed state or an open state, each switching device being connected between a corresponding terminal of the resonant circuit and the other of said pair of output terminals, controlling means coupled to each of the switching devices and capable of causing each switching device to open and close alternately and in opposite phase to the state of the other switching device at a rate corresponding to an operating frequency at or near the natural resonant frequency of the resonant circuit, whereby in use the resonating current in the resonant circuit is reinforced by operation of the switching devices and the resonating current does not pass through the switching devices, and the periodically varying magnetic field is emitted from the first two terminal inductive unit.

이 특허를 인용한 특허 (128)

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Baarman, David W., Adaptive inductive power supply.
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Baarman, David W., Adaptive inductive power supply.
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Baarman, David W., Adaptive inductive power supply with communication.
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Baarman, David W., Adaptive inductive power supply with communication.
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Baarman, David W., Adaptive inductive power supply with communication.
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Baarman, David W., Adaptive inductive power supply with communication.
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Baarman, David W., Adaptive inductive power supply with communication.
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Baarman, David W., Adaptive inductive power supply with communication.
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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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