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ESE Seminar: “Megahertz Power Electronics in Transportation and Healthcare Applications”
March 9, 2021 at 11:00 AM - 12:00 PM
The efficient use of electrical energy is a foundation of modern society. Power electronics is at the core of electrical energy conversion and greatly impacts a system’s size, performance, and cost. High-performance miniaturized power electronics can be a key enabling technology for many emerging applications, such as electric vehicles (EV), medical devices, and soft- and micro-robotics.
This talk presents a new generation of power electronic devices that leverage high-frequency (3-300 MHz) operations to reduce energy storage requirements and achieve a significant reduction in overall size and cost. New circuits and system architectures are introduced that enable such dramatic increases in operating frequencies. We will show several system examples, including 1) a 1.7 kW inductive wireless power transfer system for EV charging, 2) a 54 kV high-voltage power supply for Xray CT scanners, and 3) a compact high-intensity focused ultrasound (HIFU) device for noninvasive cancer therapy, to demonstrate the promising potential of high-performance megahertz power electronics in various applications.
Postdoctoral Research Scholar, Stanford University
Lei Gu is a postdoctoral research scholar at Stanford University in the Power Electronics Research Laboratory (SUPERLab). Previously, he received his Ph.D. in electrical engineering from Stanford University in 2019. His research interests include power electronic systems and components and their use in a wide range of applications, such as energy, healthcare, and robotics. He is a recipient of the IEEE Power Electronics Society Ph.D. Thesis Talk Award and two IEEE COMPEL Best Paper Awards. He also consults in industry and previously held positions at Texas Instruments and Amazon Lab126.