서지주요정보
High power hard commutation chopper 에서 saturable reactor-resistor pair 의 효과 = A effect of saturable reactor-resistor pair on high power hard commutation chopper
서명 / 저자 High power hard commutation chopper 에서 saturable reactor-resistor pair 의 효과 = A effect of saturable reactor-resistor pair on high power hard commutation chopper / 강민구.
저자명 강민구 ; Kang, Min-Goo
발행사항 [서울 : 한국과학기술원, 1987].
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소장정보

등록번호

4104698

소장위치/청구기호

학술문화관(문화관) 보존서고

MEE 8791

SMS전송

도서상태

이용가능

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반납예정일

초록정보

Saturable reactor-resistor pair is proposed as a part of snubber and it is applied to a hard commutation chopper. A basic hard commutation chopper is designed and scr turn off process and saturable reactor is modeled to simulate the hard commutation chopper. SCR turn off model is based on the recovered charge characteristics given in the data sheet and the empirical result. For modeling of the saturable reactor, λ-i curve is measured and then important parameters such as saturation current and nonsaturation inductance are calculated from it. State equations are derived for each mode of the chopper and they are solved by Runge-Kutta order 4 method. It is shown that there is an optimum resistance which minimizes the reverse voltage spike and reverse dv/dt. Peak reverse recovery current Irm is reduced and reapplied forward dv/dt is increased as resistance Rx is increased. Saturable reactor-resistor pair can be used to reduce SCR power loss and value of Cs and can be applied to high power thyristor devices.

서지기타정보

서지기타정보
청구기호 {MEE 8791
형태사항 [ii], 44 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Min-Goo Kang
지도교수의 한글표기 : 조규형
지도교수의 영문표기 : Gyu-Hyeong Cho
학위논문 학위논문(석사) - 한국과학기술원 : 전기 및 전자공학과,
서지주기 참고문헌 수록
주제 Shock absorbers.
Commutation (Electricity)
Thyristors.
리액터. --과학기술용어시소러스
사이리스터. --과학기술용어시소러스
스너버 회로. --과학기술용어시소러스
초퍼 회로. --과학기술용어시소러스
환류. --과학기술용어시소러스
Electric reactors.
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