报告题目：Reconfigurable Mixed-Signal Controller for Power Electronics Systems
报告地点：腾讯会议 ID：326 932 024
报 告 人：Prof. Chi-Seng Lam, Associate Professor of State Key Laboratory of Analog and Mixed-Signal VLSI and the Institute of Microelectronics, and also with the Department of Electrical and Computer Engineering, Faculty of Science and Technology, UM
Chi-Seng Lam received the Ph.D. degree in electrical and electronics engineering from the University of Macau (UM), Macau, China, in 2012. He completed the Clare Hall Study Program at the University of Cambridge, Cambridge, U.K., in 2019. In 2013, he was a Postdoctoral Fellow with The Hong Kong Polytechnic University, Hong Kong, China. He is currently an Associate Professor with the State Key Laboratory of Analog and Mixed-Signal VLSI and the Institute of Microelectronics, UM. He has coauthored or co-edited four books and more than 130 technical journals and conference papers. He holds four U.S. and three Chinese patents. His research interests include power quality compensators, renewable energy generation, integrated power electronics controllers, power management integrated circuits, and wireless power transfer.
In modern power electronics (PE) systems such as: power quality (PQ) compensators, uninterruptible power supplies (UPS), motor drivers, renewable energy conversion systems, etc. they usually require a digital controller like a microcontroller unit, a digital signal processor (DSP), a field programmable gate array (FPGA), etc. to control on/off of the PE switches for performing the corresponding functionalities. Usually, the signal sensing circuit with the analog-to-digital converter (ADC) is designed with full-loading consideration for a digital controller. As a result, in weak sensing input signals situation (e.g. during light or medium load situations), the digital controller may suffer from low resolution and noise problem to detect the small voltage/current, which significantly affects the control system performance.To overcome the above problem, this talk first introduces an adaptive control strategy for the signal sensing analog circuit, which is also controlled by the digital controller. This kind of mixed-signal PE controller already significantly improves the PE system performances. Then, the concept of reconfigurable mixed-signal controller chip for different PE systems is introduced, which opens the door for the miniaturization of the overall PE controller system that usually requires many expensive discrete signal sensing and conditioning boards, ADC and digital and/or analog controllers, probably in mutli-PCBs implementation. In this talk, the design of a reconfigurable and extendable digital controller architecture for the mixed-signal controller with its computer based user-interface for feature-shared PE applications is presented and discussed, which possibly offers less compile and operation time, swift reconfigurability and less development time.