China International Youth Conference on Electrical Engineering (CIYCEE 2020)

With the fast development of power electronics, there is an increasing need for small volume, high power density and fast response power conversion equipment in the fields of lighting, data center power system, wireless power transfer, industrial robot and other applications. Improving the operating frequency is the fundamental strategy to reduce the value, volume of passive components, which can effectively reduce the system volume. With the development of wide bandgap (WBG) devices, the operating frequency can be pushed up to tens of MHz, where the power electronic conversion technology comes into the era of very high frequency (VHF). However, many challenges come with the tremendous increment of operating frequency, such as large switching loss, large driving loss and large magnetic component loss, which investigate and overcome in recent years. In this talk, the development and challenges of VHF power converters will be presented, including the components, topologies, and driving methods.