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- VisIC Technologies paves the way to high-power GaN traction inverters, successfully operating a BEV motor
VisIC Technologies paves the way to high-power GaN traction inverters, successfully operating a BEV motor
• VisIC Technologies has successfully tested its 2.2mΩ 650V half-bridge power module, demonstrating an efficient Gallium Nitride-based 3-phase traction inverter with an automotive-grade PMSM motor.• The company’s D³GaN technology promises high efficiency, smaller power systems, and reduced battery size without compromising driving range, all at a cost competitive with Silicon.
VisIC Technologies recently demonstrated the successful operation of its 2.2mΩ 650V half-bridge power module with a 3-phase configuration on a dyno-test-bench using an automotive-grade PMSM motor. This testing proved the suitability of their D³GaN (Direct Drive D-Mode Gallium-Nitride) semiconductor technology for high-power automotive applications.
The test addressed concerns about parallelization and oscillations caused by fast-switching transients. The inverter phase current reached 350Arms (500A peak) at 400V, limited only by the test system setup. The power module is capable of higher currents.
The company also conducted Worldwide Harmonized Light Vehicles Test Procedure (WLTP) driving cycle testing. Despite using early non-optimized module prototypes, the results showed comparable efficiency with commercial Silicon Carbide-based modules. This suggests that D3GaN technology can deliver high efficiency, lower car costs through lighter, smaller power systems and reduced battery size, all without compromising driving range.
The D3GaN technology, based on GaN-on-Silicon semiconductor process, outperforms Silicon Carbide (SiC) at a more competitive Silicon cost level.
“With this great accomplishment, acknowledged by a leading automotive OEM, VisIC Technologies has provided overwhelming evidence for higher-efficiency at lower-cost future EV traction inverters, for the automotive world,” said Dr. Tamara Baksht, CEO & Co-founder of VisIC technologies.
The company’s 3-phase prototype inverter system will be available for additional customer testing by the end of Q2 2023.
These advancements could lead to improved efficiency and cost reductions in electric vehicle power systems, potentially impacting the broader EV industry.