Navitas Semiconductor, an Irish company developing power integrated circuits based on gallium nitride (GaN), has announced that it will implement its technology in electric vehicles. Current converters and power inverters with such semiconductors will allegedly increase the range and reduce the cost of batteries by five percent, while at the same time three times faster charging. True, now such devices are 10-20 percent more expensive than silicon ones, but within two years their prices may fall.
GaN semiconductors operate up to 20 times faster than silicon; provide three times the power and the same amount of faster charging in half the size and weight. They can be used to make current converters and power inverters, which will increase the range of electric cars and reduce the cost of batteries by five percent, the company said in a press release. However, in a conversation with CNBC reporters, the head of Navitas, Jean Sheridan, gives different numbers: the mileage without recharging will increase by 30 percent, or the size of the batteries will decrease by the same amount.
Navitas Semiconductor already supplies chips to, for example, Xiaomi, but they will not appear in electric vehicles until 2025. It will take several years to redesign the entire power system around an integrated circuit, Sheridan says, so far they are 10 to 20 percent more expensive than silicon. In January, the company opened its own center in Shanghai, which will deal with these problems, as well as work directly with automakers. According to CNBC, Navitas has entered into an agreement with BRUSA HyPower, a supplier of components for Porsche, Audi and Volkswagen.
In the meantime, Koenigsegg also did not sit idly by and developed the Quark electric motor. It features ultra-compact dimensions, low weight, high torque, and a unique Raxial Flux topology that combines axial and radial flux to balance power and thrust. Peak values in Quark are achieved at relatively low speeds, so there is no need to use a complex transmission – a simple reduction gear will suffice.