We are addressing challenges of reducing carbon dioxide emissions. Driven by environmental concerns, established mechanical technologies such as combustion engines are being replaced and enhanced by energy efficient, electrically driven machines. Lightweight, compact, and ultra-efficient power electronic converters are needed for the next generation of electric vehicles. Ultra-high efficiency is required across all electricity use: from megawatt high-voltage converters in the electricity grid, down to microelectronic environmental sensors with microwatt consumption. Renewable energy capture requires highly reliable converters with health monitoring. We are exploiting the step-change in performance of new GaN and SiC power semiconductor devices, to develop technologies that will benefit applications across a wide range of engineering sectors and scales.
Advanced Gate Driving
Reducing electromagnetic emissions (EMI) of GaN and SiC converters through active gate driving. Increasing efficiency by resonant gate driving and by gate-charge energy recycling.
GaN Power Electronics and Reliability
Increasing efficiency by switching GaN power devices safely at ultra-high slew rates. Improving reliability by sensing junction temperature and device health.
Ultra-High Efficiency Power Electronics
The miniaturisation of power conversion, enabled by the reduction of power loss to below 1%, for example in grid-tie inverters.
Grid-level Power Electronics
Investigating the application of emerging SiC devices in a sector that demands highest reliabilities.
Addressing challenges in battery-life, energy harvesting and wireless power transfer by using sensors as power sources.
Making visible high-frequency features in the current and voltage waveforms of SiC and GaN converters, for example through noise-immune field sensors.