What is the switching frequency of main EV/HEV e-powertrains?

Definition

The switching frequency and switching strategy determine the characteristic voltage and current supply spectra of AC electrical machines. They are chosen to maximize the converter output power, minimize electric powertrain losses, and minimize acoustic noise due to magnetic forces.

Application to e-NVH

Using sound and vibration measurements or scientific publications, EOMYS is updating on this webpage a list of some electrical powertrain switching frequencies used in commercial EV/HEV automotive applications. If you know about some more numbers to be added in this table, please send us the information using the contact page.

Asynchronous switching means that switching frequency does not change with e-motor speed.

Main PWM strategies in EV HEV
Brand Model PWM frequency PWM strategy
BMW i3 8 kHz Asynchronous
Hyundai Ionic 8 kHz Variable (partly synchronous)
Nissan Leaf 5 kHz Asynchronous
Opel Ampera 10 kHz Asynchronous
Renault Twizy 8 kHz Asynchronous
Renault Zoe 10 kHz Asynchronous
Smart ForTwo 10 kHz Asynchronous
Toyota Prius 2004 2.5 kHz Asynchronous
Toyota Prius 2010 5 kHz Asynchronous SVPWM
VW e-up 9 kHz Asynchronous
Tesla S 9.95 kHz Asynchronous
Tesla 3 ? Asynchronous
Tesla X 9.95 kHz Asynchronous
Tesla Y 9.95 kHz Asynchronous
Audi e-Tron 10 kHz Asynchronous
Jaguar i-Pace 10 kHz Asynchronous
Porsche Taycan 8 kHz Asynchronous
Mercedes Benz EQC ? Asynchronous
Volvo Cars XC40 10 kHz Asynchronous
Volvo Cars Polestar 2 10 kHz Asynchronous

See also

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