Electric vehicle (EV) propulsion technology typically consists of an electric motor and an inverter. Direct current (DC) from the battery is converted into alternating current (AC) by the inverter and supplied to the electric motor. The motor generates a magnetic field, rotates its rotor, and propels the vehicle. Thanks to the high torque of electric motors, rapid acceleration is achieved, and their efficiency is significantly higher than that of internal combustion engines. For those curious about the details, you can also look into electromagnetism and power electronics.
How does propulsion technology work in electric vehicles?
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I explain the push principle in EVs exactly the same way. Since 2022, I’ve been measuring inverter AC output delays in my electric van’s motor; the 0-100 km/h acceleration of around 2.7 seconds is thanks to the perfect synchronization between inverter and motor. Once, a friend’s DC-DC converter had a regulation issue, so we grabbed pen and paper. We fed 400 V DC into the inverter’s DC input and watched the AC waveform on an oscilloscope—we spotted a 120 Hz ripple. We fixed it by re-running performance tests on the modules. So it’s not just “DC→AC→motor”; it all depends on how stable that inverter-motor pair is against battery voltage and heat.