Influence of the Shielding Winding on the Bearing Voltage in a Permanent Magnet Synchronous Machine

Sebastian Berhausen (), Tomasz Jarek and Petr Orság
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Sebastian Berhausen: Faculty of Electrical Engineering, Silesian University of Technology, 44-100 Gliwice, Poland
Tomasz Jarek: Łukasiewicz Research Network—Institute of Electrical Drives and Machines KOMEL, 40-203 Katowice, Poland
Petr Orság: Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic

Energies, 2022, vol. 15, issue 21, 1-19

Abstract: This article presents selected methods of limiting the bearing voltages of synchronous machines with permanent magnets supplied from power electronic converters. The authors analyzed methods based on the use of various shielding windings placed in slot wedges and mounted in the stator end-winding region. The values of the parasitic capacitances of the machine, on which the levels of bearing voltages depend, were determined using the finite element method. Three-dimensional simulation models were used for the calculations. The analysis of the influence of the shielding windings on the bearing voltage waveforms was conducted on the basis of circuit models with two- and three-level converters. The obtained calculation results indicate a high potential in limiting bearing voltages.

Keywords: bearing voltages; PMSM; parasitic capacitances; FEM 3D; shielding winding (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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