From Build Factors to Physics: Modelling PWM-Induced Motor Losses with First Principles
The effect of PWM induced current ripple on the efficiency of traction motors is often ignored or hidden in empirical build factors.
This presentation discusses a computationally efficient yet accurate method to calculate these loss contributions over a full drive cycle for optimization purposes.
- PWM‑induced losses in traction motors are often underestimated or absorbed into empirical build factors, obscuring their real impact on efficiency and thermal behavior.
- Conventional loss‑prediction methods rely on transient FEA and are therefore limited to a small set of operating points due to high computation time.
- This work introduces a fast, FEA‑supported numerical method that accurately computes PWM‑induced losses across the full operating envelope of an automotive drive cycle.
- The approach enables high‑resolution efficiency mapping and design‑space optimization without sacrificing physical fidelity.
Wednesday 20 May 16:10 - 16:40 Electric Motor Forum
Advancements in Electrical & Mechanical Engineering and Automation
Sustainability and Energy Efficiency
The effect of PWM induced current ripple on the efficiency of traction motors is often ignored or hidden in empirical build factors.
Electric Motor Forum Europe/London
Speakers
Managing Director and Founder, DRV Solutions
