Optimized Pulse Patterns for Salient Permanent Magnet Synchronous Machines Considering Nonlinear Magnetic Effects
Conference: PCIM Europe 2023 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/09/2023 - 05/11/2023 at Nürnberg, Germany
doi:10.30420/566091246
Proceedings: PCIM Europe 2023
Pages: 10Language: englishTyp: PDF
Authors:
Hepp, Maximilian; Saur, Michael; Wondrak, Wolfgang (Mercedes-Benz AG, Power Electronics Advanced Engineering, Germany)
Bakran, Mark-M. (University of Bayreuth, Department of Mechatronics, Centre for Energy Technology, Germany)
Abstract:
Optimized pulse patterns (OPPs) are used to minimize the current harmonics in the permanent magnet synchronous motors (PMSMs) supplied by voltage source inverters (VSI) in electric vehicles (EVs). These PMSMs are highly utilized machines and therefore they show a non-linear magnetic behaviour due to saturation effects. In this contribution, a new method based on current-dependent absolute and differential inductances of the machine is proposed to calculate the optimal switching angles regarding current harmonics considering these non-linearities. The improvement of the proposed method compared to the state-of-the art is evaluated by simulation and measurement results.