With the increasing electrification of vehicles, the demands for perceived noise quality are also increasing. What used to be masked by the combustion engine is now clearly audible. High-frequency excitations and vibrations pose new challenges for developers - especially the interaction between the electric motor, gearing and bearings.
The controller of the electric motor can provide a remedy here – system-critical excitations can be actively suppressed through targeted modification of the current characteristics, without any intervention in the mechanics or acoustic measures.
The focus is on Harmonic Current Injection (HCI) – an intelligent controller strategy that reacts specifically to speed-dependent NVH phenomena. In our free webinar, Marc Janousek, Application Engineer at AVL Deutschland GmbH, will show you how an HCI-capable controller can be integrated and evaluated directly in a multi-body simulation model of an e-drive in AVL EXCITE™ M – and how initial reliable statements on the limits and effectiveness of HCI are possible even before the test bench.
Key topics and takeaways:
- Presentation of the principle and mode of operation of Harmonic Current Injection
- Step-by-step: Integration of an HCI controller in EXCITE M
- Comparative NVH analysis with and without HCI
- Evaluation of the limits of HCI