Pre-FPO "Architecture and Magnetics Co-Design for Extreme Performance Power Conversion"

Apr 22, 2022, 10:00 am11:00 am
Event Description

Power electronics is the backbone technology for future energy systems including data centers, electric vehicles, and grid-scale energy storage. These are high-impact applications demanding extreme performance from power conversion. To leverage the advances in semiconductor devices and the scaling laws of passive components, a promising trend is to minimize the power conversion stress and maximize the passive component utilization by architecture and magnetics co-design.

In pursuit of this vision, this thesis first developed a systematic method to merge multiple magnetic components into one with matrix coupling. The benefits of matrix coupling in size reduction, ripple compression, and transient acceleration are quantified. The effectiveness of matrix coupling was verified by an “all-in-one-magnetics” dc-dc converter with 4x reduced passive component size and 9x faster transient speed. Two distinct architectures are then developed to answer two important questions: (1) how to deliver power to a massive amount of modular loads (e.g., hard drives, batteries, solar cells) with extreme energy efficiency (above 99%); and (2) how to deliver a massive amount of current to a tiny area (e.g., high performance microprocessors) with extreme power density (above 100A/cm2). The two architectures expand the fundamental performance boundary of power electronics from two different perspectives, providing insights into designing extreme performance power electronics systems for a wider range of applications.