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Using SiC to Improve Electric Powertrain Efficiency

The range autonomy of an electric vehicle (EV) depends on a multitude of parameters, particularly battery capacity. A 10% improvement in powertrain efficiency amounts to a similar increase in battery capacity without any added weight and with a much lower extra cost. The development of silicon carbide (SiC) semiconductors that can be integrated into power electronic systems instead of silicon (Si) semiconductors makes this possible. Powerful electronic control units (ECUs) such as those in self-driving vehicles will also benefit from their advantages. SiC semiconductors are already being used by a some high-end makers and their widespread use is not far off. However, the main challenge today is industrial, not technical.



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