LAPSE:2023.25390
Published Article
LAPSE:2023.25390
High-Efficient Brushless Wound Rotor Synchronous Machine Topology Based on Sub-Harmonic Field-Excitation Technique
March 28, 2023
This paper presents a new high-efficient three-phase brushless wound rotor synchronous machine (BL-WRSM) based on a sub-harmonic field excitation technique. In the proposed machine topology, the stator is equipped with two different three-phase windings: (1) main armature winding, and (2) additional armature winding. The main armature winding is based on a 4-pole winding configuration, whereas the additional armature winding is based on a 2-pole winding configuration. Both windings are supplied current from two different inverters, i.e., inverter-1, inverter-2, and simultaneously. Inverter-1 provides the regular input current to the main armature winding, whereas inverter-2 provides a three-phase current of low magnitude to the 2-pole additional armature winding. This generates an additional sub-harmonic component of MMF in the airgap beside the fundamental MMF. On the other side, the rotor is equipped with (1) harmonic, and (2) field windings. These windings are electrically coupled via a rectifier. The fundamental component of MMF produces the main rotating magnetic field, whereas the sub-harmonic MMF gets induced in the harmonic winding to produce harmonic current. This current is rectified to give DC to the rotor field winding to attain brushless operation. To authenticate the operation and analyze its performance, the proposed BL-WRSM topology is supported using 2-D finite element analysis (FEA) in JMAG-Designer. Later on, the performance of the proposed brushless topology is compared with the customary BL-WRSM topology to verify its high efficiency, high output torque, low torque ripple, and low unbalanced radial force on the rotor.
Keywords
brushless operation, sub-harmonic field excitation, synchronous motor
Suggested Citation
Bukhari SSH, Ali Q, Doval-Gandoy J, Ro JS. High-Efficient Brushless Wound Rotor Synchronous Machine Topology Based on Sub-Harmonic Field-Excitation Technique. (2023). LAPSE:2023.25390
Author Affiliations
Bukhari SSH: Department of Electrical Engineering, Sukkur IBA University, Sukkur 65200, Pakistan; School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06910, Korea [ORCID]
Ali Q: Department of Electrical Engineering, Sukkur IBA University, Sukkur 65200, Pakistan
Doval-Gandoy J: Applied Power Electronics Technology Research Group, University of Vigo, 36310 Vigo, Spain [ORCID]
Ro JS: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06910, Korea; Department of Intelligent Energy and Industry, Chung-Ang University, Seoul 06910, Korea [ORCID]
Journal Name
Energies
Volume
14
Issue
15
First Page
4427
Year
2021
Publication Date
2021-07-22
Published Version
ISSN
1996-1073
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Original Submission
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PII: en14154427, Publication Type: Journal Article
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LAPSE:2023.25390
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doi:10.3390/en14154427
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Mar 28, 2023
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