Study of the PWM Control Strategies for Three Switches Isolated Boost DC-DC Converter

2018 4th International Conference on Environment and Renewable Energy

生态环境科学;能源学

Duong, Truong-Duy^1 ; Nguyen, Minh-Khai^2 ; Lim, Young-Cheol^1 ; Choi, Joon-Ho^1

Department of Electrical Engineering, Chonnam National University, Gwangju

500-757, Korea, Republic of^1

Department of Electrical Engineering, Chosun University, Gwangju

61452, Korea, Republic of^2

关键词: Current input;    High frequency HF;    Isolated boosts;    Output voltages;    Parameter designs;    PI Controller;    PWM control;    Secondary voltage waveforms;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/159/1/012021/pdf
DOI  :  10.1088/1755-1315/159/1/012021

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper presents the PWM control strategies for three-switch isolated boost DC-DC converter. By inserting the extra states into the conduction time of switches, the current input is still continuous; unchanged primary and secondary voltage waveforms of the high-frequency (HF) transformer. The parameter design guideline with the different PWM control strategies is discussed. A 400 W prototype has been tested in the laboratory to verify the performance of the three-switch DC-DC converter with two PWM control strategies and a PI controller was used to clarify the DC output voltage at 400 V. The simulation and experimental results are shown to validate the theoretical analysis.