QPT, RAM team for GaN inverter
UK startup QPT is working with packaging experts RAM Innovations on a high performance traction inverter using (GaN) gallium nitride transistors
The VERDE project is developing a high frequency, 400V/60kW GaN inverter as a demonstrator for automotive designs with QPT in Cambridge and Portugal as well as RAM in Deeside, part of the Russel group for the thermal packaging.
The demonstrator inverter features high frequency GaN switching up to 1MHz to reduce the size of the magnetics required and increase the efficiency. Key to this is QPT’s pure sign wave output that reduces harshness, noise, and vibration to improve reliability and reduce power consumption.
“Our system technology enables GaN to be used for high-power, high-performance applications, overcoming the thermal and EMI problems that have stopped GaN being used in automotive in the past,” said Rupert Baines, CEO of QPT.
“We are already talking with automotive companies who would like to partner with us to leapfrog the market that is currently focussed on SiC and realise GaN-based inverters. Reducing waste in the inverter and in the motor not only increases range (or reduces batteries for the same range), but it also simplifies the cooling system, further reducing weight. This is a major game changer for the EV industry.”
“This project will create a demonstrator to be shown at Cenex Expo at UTAC Millbrook, UK in September 2025, where the world’s leading EV companies will be able to see the technological leap forward that this Project has made possible. This APC investment will accelerate bringing the technology to market by at least two years,” said Peter Green, CEO of RAM Innovations.
The project is led by Ian Stacey, QPT’s VP of Engineering and Operations.
“This project unlocks GaN and is a major step forward in achieving it, replacing legacy silicon and SiC,” he said. “As well as stimulating research and development, it will also provide around 70 UK manufacturing jobs by 2032 as the technology is turned into products. In the drive to net-zero, the demand for electric motors will escalate and these must be as efficient as possible to minimise electricity being wasted. EVs will play an increasingly important role in achieving Net Zero..”
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