Chapter 8: Power Electronics and Controllers in Electric Vehicles
Abstract : Power electronics (PE) and controllers are the "brains" and "muscles" of EVs, managing energy flow from the high-voltage battery to the motor, converting power forms (DC to AC, high to low voltage), regulating speed/torque, and enabling functions like regenerative braking, crucial for efficiency, performance, and safety via components like inverters, DC-DC converters, and motor controllers . Key Power Electronics Components Inverter : Converts high-voltage DC from the battery into three-phase AC power needed by the electric motor. DC-DC Converter : Steps down high-voltage DC to low-voltage DC (e.g., 12V) for vehicle accessories (lights, AC, infotainment) and to recharge the auxiliary battery. Onboard Charger : Converts incoming AC from the grid (at home or a station) to DC for battery charging. Power Electronics Controller (PEC) : Manages all these converters, interpreting driver input (pedals) and sensor data to control motor ...