文章基本信息

标题：A High-Gain Cockcroft-Walton-Doubler-Based Switched-Coupled-Inductor Step-Up DC-DC Converter
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作者：Yuen-Haw Chang ; Yu-Ming Lu
期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2019
卷号：2239
页码：304-309
出版社：Newswood and International Association of Engineers
摘要：A closed-loop high-gain Cockcroft-Waltondoubler-based switched-coupled-inductor (CWSCI) converter is proposed by combining a sawtooth wave generator and pulse-width- modulation-based (PWM-based) compensator for step-up DC-DC conversion and regulation. The power part between source VS and output VO contains two sub-circuits: (i) a switched-coupled- inductor (SCI) booster, and (ii) a twostage Cockcroft-Walton- doubler (CWD) circuit. With the help of these circuits operating cyclically, this CWSCI can provide the total step-up voltage gain of (2n+3+nD)/(1-D) theoretically, where D is the duty cycle of PWM and n is the turn ratio of the coupled inductor (e.g. the voltage gain can be boosted up to 21 when D=0.5, n=3). Further, the PWM technique is adopted not only to enhance the output regulation for the compensation of the dynamic error between the practical and desired outputs, but also to reinforce the robustness against source/loading variation. Finally, the closed-loop CWSCI is designed by OrCAD and simulated for some cases: steady-state and dynamic responses. All results are illustrated to show the efficacy of the proposed scheme.
关键词：high;gain; Cockcroft;Walton;doubler (CWD); switched;coupled;inductor (SCI); step;up DC;DC converter; pulse;width;modulation (PWM)