Abstract
A very simple and therefore wide-spread way to control motor speed and torque is to regulate the stator voltage by pulse width modulation (PWM). Depending on the modulation type, number of inverter levels and modulation
index of the PWM, various spectral components occur in the supply signal and inject ripple current in the motor phases. This current distortion can cause significant additional losses in the stator and rotor core, permanent magnets and windings of an electric machine.
Therefore, it is important to consider these losses in an early design stage. In this work an efficient calculation method for harmonics of multilevel PWM signals and generated phase currents with different modulation types is presented. The PWM losses are calculated
via 2D finite element method (FEM) analyses. The calculation and simulation workflow is realized within the software tool SyMSpace and applied to a three-phase permanent magnetic synchronous machine (PMSM).
| Original language | English |
|---|---|
| Title of host publication | ICEM 2020, International Conference on Electrical Machines, Gothenburg, Sweden |
| Number of pages | 7 |
| Publication status | Published - Aug 2020 |
Fields of science
- 202 Electrical Engineering, Electronics, Information Engineering
- 202009 Electrical drive engineering
- 202011 Electrical machines
- 202025 Power electronics
- 202027 Mechatronics
JKU Focus areas
- Digital Transformation
- Sustainable Development: Responsible Technologies and Management
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