As we face increasing environmental challenges, a sustainable circular economy has become an important approach to maximize the value of material resources and minimize greenhouse gas emission, waste, and resource use. The implementation of a circular economy among electrified transportation, charging infrastructure, and energy generation/storage requires energy-efficient and reliable power conversion systems that enable the closed-loop process through reusing and recycling critical components.

In this talk, I will first discuss innovative inverter and electric machine topologies for maximizing the energy conversion efficiency with less resource use, ultimately enabling electrification among a broad range of transportation systems such as heavy-duty vehicle and aircraft. I will also present efficient and high-power density DC fast charging circuit topologies with bidirectional power flow capability supporting the power grid and renewable energy generation system. Lastly, I will discuss how the innovative power conversion system can contribute to closing the loop on the sustainable circular economy by effectively reusing battery packs in power grid systems.