OTT1796/1833
Applications
Wide Bandgap (WBG) Power Electronics and Ultra-Wide Bandgap Power Electronics (UWBG)
Target Problems
Advances in WBG power semiconductors provide numerous benefits, including high power density, high efficiency, and the dynamic control of energy; however, such advancements also accelerate electrical aging and increase the risk of premature system failure.
Key Benefits
- More Effective – help reduce the undesired material aging and eventual failure of WBG & UWBG
- Reducing Partial Discharge (PD) – impressive performance reducing PD magnitude and rate
- High Temperature Performance – using inorganic materials with extremely high melting points
Dr. Chanyeop Park
Technology
Dr. Chanyeop Park and his team have developed novel electret-based materials and structures, both inorganic and organic, to address partial discharge (PD) challenges in advanced power electronic systems. This technology employs an electret-based PD mitigation approach that neutralizes high electric fields at critical triple-point locations through electric field cancellation.
Electrets are dielectric materials embedded with net positive or negative charge or aligned dipoles and function as the electrical equivalent of permanent magnets. The disclosed platform includes electrically charged inorganic thin films, such as silicon nitride supported by silicon dioxide, as well as organic polymer electrets such as Parylene. These material options allow tuning of performance across operating temperature, voltage, packaging architecture, and manufacturing constraints.
Intellectual Property
U.S. utility patent pending.
Inventor
Chanyeop Park
Associate Professor, Electrical, Computer and Energy Engineering, Arizona State University
Formerly: Assistant Professor, Electrical Engineering, UWM