Article
Enhancing Vibroacoustic Performance of Power Electronic Subsystem in Electric Drives Using Particle Dampers (en)
* Presenting author
Abstract:
Power electronics serve as the central control hub within electric drive systems. Its primary objective is to perform electrical energy conversion at high frequency. However, vibrations from road conditions and other sources can travel through the power electronic components via their mounts. This transmission can greatly impact various aspects, including energy efficiency, reliability, and passenger comfort. Additionally, the audible noise generated can pose challenges to the broader adoption of electric vehicles. Consequently, reducing both vibration and sound emissions from power electronics remains a critical priority for automotive manufacturers. Therefore, the particle damping technique is applied to reduce vibration and sound emissions from a power electronic subsystem in the current contribution. A particle damper is a passive damping technique, which is based on high damping properties of granular materials. Vibration attenuation is accomplished by this technique through the viscoelastic deformation and friction resulting from the movement and collisions of granular material within the cavity. This contribution introduces several design strategies that have been developed for integrating particle dampers into a power electronic component. Following the comprehensive study of particle dampers design at the laboratory scale, several tests are conducted on a real-scale modular electric-drive toolkit, subjected to actual operating conditions.