Size the traction inverter for an EV based on motor power, battery voltage, and peak current requirements.
Input Parameters
Results
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Continuous Current
A
--
Peak Current
A
--
Inverter Rating
kVA
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Est. Switching Loss
kW
Note: Modern EV inverters use SiC MOSFETs for 2-5% higher efficiency vs IGBTs. 800V architecture halves current for same power, reducing cable weight and losses. Tesla Model S inverter handles ~600A peak at 400V.
Reference
Continuous Current = (Peak Power × 0.6) / (V_batt × Motor Eff)
Peak Current = (Peak Power × Overload) / (V_batt × Motor Eff)
Inverter kVA = Peak Power × Overload / Motor Eff
Switching Loss ≈ 3% of peak power (SiC MOSFETs)