Influence of Different Switching Frequencies and Modulation Techniques on IPMSM and Inverter Losses Optimizing the Overall Drive Train Efficiency

Conference: PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/16/2017 - 05/18/2017 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2017

Pages: 5Language: englishTyp: PDF

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Authors:
Stempfle, Martin; Han, Yuying; Woelfle, Julian; Troester, Nathan; Roth-Stielow, Joerg (University of Stuttgart, Germany)

Abstract:
For the optimization of the drive train efficiency, a trade-off between inverter and machine losses is of importance. The inverter’s switching frequency and modulation technique influence these losses. In this paper the power loss characteristics of a 70 kW interior permanent magnet synchronous machine are analyzed for different switching frequencies and modulation techniques. Furthermore the machine losses are opposed to the losses of a three phase two-level voltage source inverter. Finally the benefit through the optimization process is shown for several operating points and utilized on a driving cycle. The results of the paper are derived from measurements on a test bench.