Output voltage control of zero-current-switched series resonant converters employing linearization and sliding mode선형화와 슬라이딩모드를 이용한 직렬공진형 전력변환기의 출력전압 제어

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Up to the present, there have been a great deal of researches on the resonant power conversion schemes in the communication, aerospace, and industry applications due to the increasing demand for the higher power density. Further researches to the resonant power converters towards the markets of the power supply will be performed in the future. The higher switching frequency can provide the smaller volume and weight of the electromagnetic components of the converters. It is, therefore, required to increase the operating frequency to obtain the improved power density. Since the zero voltage switching or the zero current switching condition is used in the soft-switched resonant power converters, the switching losses are greatly reduced and the higher frequency operation becomes also available. Among the SRC``s, an SRC operating at resonant frequency named as a quantum SRC is recently introduced. This type of converter has many advantages such as the zero current switching, the wide control range, and the linear control characteristic like the conventional buck type PWM converters etc. Furthermore, the output filter can be effectively designed due to the constant switching frequency. The quantum boost and buck-boost operation can also be obtained by properly controlling the additional switch. The numerous studies have been devoted to improve the control performance of the ZCS-SRC``s. These studies are largely grouped into the integral cycle mode control and the nonperiodic integral cycle mode control technique. The integral cycle mode control technique is very simple to implement due to the fixed control cycle. However, there exist some inherent disadvantages such as the quantized output voltage level and the relatively large current ripple due to the discrete PWM. To effectively deal with these problems, the nonperiodic integral cycle mode control scheme employing the optimal predictive current control concept has been proposed. In this technique, the control ac...
Advisors
Youn, Myung-Joongresearcher윤명중researcher
Description
한국과학기술원 : 전기및전자공학과,
Publisher
한국과학기술원
Issue Date
1995
Identifier
99074/325007 / 000855393
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 전기및전자공학과, 1995.2, [ vi, 125 p. ]

URI
http://hdl.handle.net/10203/36254
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=99074&flag=dissertation
Appears in Collection
EE-Theses_Ph.D.(박사논문)
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