This section presents our various media publications (e.g. technical animations, sound samples) related to electromagnetic noise and vibrations in electrical systems.
For technical papers on e-NVH by EOMYS, see our publication page. For videos on e-NVH by EOMYS, see our YouTube page.
The article focuses on switching noise (also called PWM noise) which may contribute to sound quality issues in EV HEV powertrains. The generation process of PWM noise is first explained,
Summary of e-NVH sound sample Application Hyundai IONIC® (EV HEV NVH) Electrical machine PMSM Supply condition Run-up at max torque Noise sources Electromagnetic, mechanical, aerodynamic See also BMW I3, NissanLeaf,
Summary of e-NVH sound sample Application BMW I3® (EV HEV NVH) Electrical machine PMa-SynRM also called HSM (p=6 poles, Zs=72 stator slots) Supply condition Run-up at max torque Noise sources
Summary of e-NVH sound sample Application Scott® “syncros” moutain e-bike, Scott® “e-sub” urban e-bike, Wayscral® urban e-bike Electrical machine Unknown Supply condition Run-up at max torque Noise sources Electromagnetic, mechanical
Summary of e-NVH sound sample Application Inmotion® two-wheel and one-wheel self balancing unicycle, Segway® two-wheeled self-balancing scooter Electrical machine Unknown Supply condition Run-up at max torque Noise sources Electromagnetic, mechanical
Summary of e-NVH sound sample Application Toyota® Prius 2004 (EV HEV NVH) Electrical machine IPMSM (48 stator slots, 8 poles) Supply condition Run-up at max torque Noise sources Electromagnetic, mechanical,
Summary of e-NVH sound sample Application Renaut® Zoe (EV HEV NVH) Electrical machine WRSM (48 stator slots, 4 poles) Supply condition Run-up at max torque Noise sources Electromagnetic, mechanical, aerodynamic
Summary of e-NVH sound sample Application Nissan Leaf® (EV HEV NVH) Electrical machine IPMSM (48 stator slots, 8 poles) Supply condition Run-up at max torque Noise sources Electromagnetic, mechanical, aerodynamic
Summary of e-NVH sound sample Application Hand power tools (drillers from Makita® and Bosch®) Electrical machine Geared BLDC Supply condition Run-up at low torque under non sinusoidal supply Noise sources
Summary of e-NVH sound sample Application Electrically assisted lifting desk (Ikea®) Electrical machine Geared BLDC motor (Brose®) Supply condition Run-up at max torque under non sinusoidal supply Noise sources Electromagnetic,