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Advanced High-Insulation and High-Voltage Transformers Leveraging Wireless Power Transfer Technologies

Date: 05/09/2024
Time: 11:00 am
Presenter: Siqi Li
Abstract: Wireless power transfer (WPT) technology enables the separation of primary and secondary side structures, possessing inherent advantages in high-insulation application scenarios. In this webinar, we will present the design of two types of high-insulation transformers harnessing the potential of WPT technology. Firstly, we will introduce a high-efficiency medium-frequency split-planar transformer (MFSPT) designed specifically for medium-voltage modular converters (MMC). High electrical insulation is achieved with high efficiency, high power density, as well as excellent heat dissipation performance at the same time. Furthermore, we will introduce a high-frequency, high step-up, and high-insulation transformer operating in the MHz frequency range. This transformer serves as a critical component in high-voltage power supplies and is widely applied across diverse domains.
Siqi Li
Siqi Li is a professor of power electronics in the Department of Electrical Engineering at Kunming University of Science and Technology (KUST) located in Kunming, China. He earned his B.S. and Ph.D. degrees in electrical engineering from Tsinghua University in Beijing, China, in 2004 and 2010, respectively. During the period from 2011 to 2013, he served as a Postdoctoral Fellow at the University of Michigan, Dearborn, MI, USA. Over the past two decades, his primary focus has been on researching power electronic converters, wired and wireless charging systems. He has successfully developed prototypes with power capacities ranging from 5 watts to 300 kilowatts. With over 30 journal papers published and 20 patents granted, he is also recognized as one of the highly cited scholars in China by Elsevier. Under his guidance, his students have achieved numerous awards in the fields of power electronics and wireless power transfer. Notable accomplishments include winning the IEEE International Future Energy Challenge in 2017 and securing the first place in the Midea Group’s national Wireless Power Transfer competition in China in 2022. In 2022, he took a step further by establishing a startup company called Suzhou Kafang Energy Technology, which has successfully introduced several wireless charging products operating at MHz frequencies.