哈尔滨工业大学（深圳）学术讲座

演讲人Speaker：钟树鸿教授 Henry Shu-Hung Chung

题目Title: Wideband Series Harmonic Voltage Compensator Using Look-Ahead State Trajectory Prediction for Microgrid Network Stability Enhancement and Condition Monitoring

时间Date：2024年 1月 5日       Time：上午 11：00 ~ 12：00

地点Venue： A 栋 505 室  

内容摘要Abstract：

A wideband series harmonic voltage compensator (WSHVC) with an operating bandwidth of 10kHz for microgrids with a plurality of grid-connected inverters (GCIs) will be presented. It generates a voltage to compensate for high-frequency harmonic voltage at the point of common coupling (PCC), resulting in a virtually zero high-frequency impedance at the aggregate output of the GCIs and thus improving system stability. The generation of the harmonic voltage is based on predicting the state trajectory of the WSHVC after a switching period per half-switching cycle to determine the moment at which the switches in the WSHVC change their states. The PCC impedance and the equivalent impedance of the GCI network are extracted by analyzing the system response after injecting the entire system with particle-swarm-optimization (PSO)-optimized multi-sine power disturbances. Therefore, system stability is predicted. The condition of passive components in the WSHVC is also monitored by estimating their values with the sampled state variables. A 1MHz, FPGA-controlled, GaN-based prototype is evaluated on a 6.5kVA testbed that consists of three commercial GCIs, nonlinear load, and adjustable grid impedance. A comparative study of the system performance with and without the WSHVC will be discussed.

个人简介(About the speaker):

Henry Shu-Hung Chung (Fellow, IEEE) received the B.Eng. and Ph.D. degrees in electrical engineering from Hong Kong Polytechnic University, Hong Kong, in 1991 and 1994, respectively.  Since 1995, he has been with the City University of Hong Kong, where he is currently the Dean of Students, a Chair Professor with the Department of Electrical Engineering, and the Director of the Centre for Smart Energy Conversion and Utilization Research. He has edited one book, authored eight research book chapters, and more than 500 technical papers including 240 refereed journal papers in his research areas, and holds 80 patents. His current research interests include renewable energy conversion technologies, lighting technologies, energy harvesting, smart grid technologies, and computational intelligence for power electronic systems.

Dr. Chung was recipient of 2021 IEEE PELS R. David Middlebrook Achievement Award. He received CityU Outstanding Research Award in 2020 and CityU Teaching Excellence Awards in 2018 and 2022, respectively. He is currently an Associate Editor for the IEEE Transactions on Power Electronics and the IEEE Journal of Emerging and Selected Topics in Power Electronics. He was the Editor-in-Chief of the IEEE Power Electronics Letters 2014–2018. He was also the Chair of the Technical Committee of the High-Performance and Emerging Technologies, IEEE Power Electronics Society in 2010–2014. He was the recipient of numerous industrial awards for his invented energy saving technologies.