中国电气工程学报（英文） ›› 2023, Vol. 9 ›› Issue (1): 104-119.doi: 10.23919/CJEE.2023.000017

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  • 收稿日期:2023-01-03 修回日期:2023-01-31 接受日期:2023-02-25 出版日期:2023-03-25 发布日期:2023-04-06

Time-domain Dynamic-performance- improvement Method for Pulse-width-modulated DC-DC Converters Based on Eigenvalue and Eigenvector Sensitivity*

Hong Li*, Zexi Zhou, Jinchang Pan, Qian Liu   

  1. School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Received:2023-01-03 Revised:2023-01-31 Accepted:2023-02-25 Online:2023-03-25 Published:2023-04-06
  • Contact: *E-mail: hli@bjtu.edu.cn
  • About author:Hong Li received the B.Sc. degree in Electrical Engineering from Taiyuan University of Technology, Taiyuan, China, in 2002, M.Sc. degree in Electrical Engineering from South China University of Technology, Guangzhou, China, in 2005, and Ph.D. degree in Electrical Engineering from Fern Universität in Hagen, Germany, in 2009. She is currently a Full Professor with the School of Electrical Engineering, Beijing Jiaotong University, Beijing, China. She has published 1 book, 68 journal papers, and 61 conference papers. She has also authorized 30 patents. Her research interests include nonlinear modeling, analysis and its applications, EMI suppressing methods for power electronic systems, and wide bandgap power devices and applications. Dr. Li is an Associate Editor of the IEEE Transactions on Industrial Electronics, an Associate Editor of the IEEE Open Journal of Industrial Electronics Society, an Associate Editor of the Chinese Journal of Electrical Engineering, and the Vice Chairman of Electromagnetic Compatibility Specialized Committee in China Power Supply Society.
    Zexi Zhou was born in Hubei, China, in 1997. He received the B.S. degree in Beijing University of Civil Engineering and Architecture, Beijing, China, in 2020. He is currently working toward the M.S. degree in Electrical Engineering at the School of Electrical Engineering, Beijing Jiaotong University, Beijing, China. His current research interests are stability and dynamic performance analysis of power electronics systems.
    Jinchang Pan was born in Hubei, China, in 1999. He received the B.S. degree in Yanshan University, Qinhuangdao, Hebei China, in 2021. He is currently working toward the M.S. degree in Electrical Engineering at the School of Electrical Engineering, Beijing Jiaotong University, Beijing, China. His current research interests are nonlinear modeling and analysis of power electronic systems.
    Qian Liu was born in Shanxi, China, in 1998. She received the B.S. degree in Taiyuan University of Technology, Taiyuan, Shanxi, China, in 2020. She is currently working toward the M.S. degree in Electrical Engineering at the School of Electrical Engineering, Beijing Jiaotong University, Beijing, China. Her current research interests are nonlinear modeling and analysis of power electronic systems.
  • Supported by:
    *Key Program of National Natural Science Foundation of China under Grant No. 52237008.

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Abstract: For pulse-width modulated (PWM) DC-DC converters, the input voltage fluctuation and load variation in practical applications make it necessary for them to have better dynamic performance to meet the regulation requirements of the system. The dynamic-performance-improvement method for PWM DC-DC converters is mainly based on indirect dynamic performance indices, such as the gain margin and phase margin. However, both settling time and overshoot in the time domain are important in practical engineering. This makes it difficult for designers to obtain a clear understanding of the time-domain dynamic performance that can be achieved with improved control. In this study, a direct analysis of the time-domain dynamic characteristic of PWM DC-DC converters is performed. A dynamic-performance-improvement method based on eigenvalues and eigenvector sensitivity (E2S-based DPIM) is proposed to directly improve the time-domain dynamic performance index of PWM DC-DC converters. By considering a boost converter with proportional-integral control as an example, an additional virtual inductor current feedback control was designed using the proposed dynamic-performance-improvement method. Simulation and experimental results verify the validity and accuracy of the proposed dynamic-performance-improvement method.

Key words: PWM DC-DC converter, time-domain dynamic-performance-improvement method, eigenvalue and eigenvector sensitivity, additional virtual inductor current feedback control