[특허]Asynchronous multiphase switching gear

Asynchronous multiphase switching gear 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02J-003/00
출원번호	US-0113926 (1987-10-27)
발명자 / 주소	Ross John M. (Annandale VA) Woodworth George K. (Manassas VA)
출원인 / 주소	International Business Machines Corporation (Armonk NY 02)
인용정보	피인용 횟수 : 35 인용 특허 : 0

초록 ▼

An asynchronous multiphase switching method and apparatus are disclosed which transfers a system load between two asynchronous AC power sources in an improved manner. It operates as a make-before-break switch to provide uninterrupted power to the system load during the transfer while minimizing voltage and current fluctuations. The control circuitry allows energy to be supplied to the load during the transition without allowing current to flow between the power sources. A matrix of SCRs is used to transfer the load between the two power sources. The switches to be gated are determined by the relative timing relationships of the existing and takeover voltage waveforms. By altering the pattern of the switches which are gated and by controlling the direction of energy flow, the transition can be made between the power sources without interruption of power.

대표청구항 ▼

An asynchronous multiphase switching circuit for transferring the connection of a three phase load from a first three phase power source to a second, independent three phase power source so as to minimize power outage to the load, comprising: a first SCR bank switchably connecting said load to said first power source and a second SCR bank for switchably connecting said load to said second power source; a waveform coincidence detector circuit having inputs connected to said second power source and a load master waveform input connected to one terminal of said load, for continuously monitoring the phase relationship between and said one terminal of said load; a control unit having an input connected to an output from said waveform coincidence detector, and an output connected to said first SCR bank and said second SCR bank, for determining the sequence for connecting the three phases from said second power source to said load through said second SCR bank when said first power source stops supplying power to said load, by determining which phase on said second power source most closely matches the phase of said load master waveform at said one terminal of said load; whereby the disruption in three phase power being supplied to said load is minimized.

이 특허를 인용한 특허 (35)

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Jones Gregory D. (Rockford IL) Owens William R. (Rockford IL) Thiel Clifford G. (Stillman Valley IL) Danby Clive M. (Rockford IL), Power controller.
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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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