Sub-harmonic-based Cost-effective Brushless Wound Rotor Synchronous Machine Topology

Authors

  • Syed Sabir Hussain Bukhari Department of Electrical Engineering Sukkur IBA University, Sukkur 65200, Sindh, Pakistan
  • Jong-Suk Ro School of Electrical and Electronics Engineering hung-Ang University, Seoul 06974, South Korea

DOI:

https://doi.org/10.13052/2023.ACES.J.380510

Keywords:

finite element analysis, sub-harmonic brushless operation, wound rotor synchronous machine

Abstract

This paper proposes a sub-harmonic-based brushless wound rotor synchronous machine (WRSM) topology. The proposed topology involves two three-phase stator windings with a different number of turns. Both windings are linked in parallel and are provided with current from a single inverter. One of these windings is a four-pole winding while the second winding is a two-pole winding. This arrangement generates a magneto-motive force (MMF) in the air-gap of the machine comprising of two components: a regular fundamental MMF and a sub-harmonic MMF. The fundamental component produces the main stator field whereas the sub-harmonic component generates a sub-harmonic field that is utilized to produce a harmonic current in a two-pole rotor harmonic winding. The induced harmonic current is rectified to inject direct current (DC) to the field winding and produce a four-pole rotor magnetic field. The four-pole rotor magnetic field when magnetically interacts with the same number of the main stator field poles producing torque. Finite element analysis (FEA) is carried out to confirm the operation and achieve the electromagnetic behavior of theproposed topology.

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Author Biographies

Syed Sabir Hussain Bukhari, Department of Electrical Engineering Sukkur IBA University, Sukkur 65200, Sindh, Pakistan

Syed Sabir Hussain Bukhari received his B.E degree in Electrical Engineering from Mehran University of Engineering and Technology, Jamshoro, Pakistan, in 2009, and Ph.D. from the Department of Electronic Systems Engineering, Hanyang University, South Korea in 2017. He joined Sukkur IBA University as an Assistant Professor in December 2016. He is currently working as a Research Professor at Chung-Ang University, Seoul, South Korea under the Korean Research Fellowship (KRF) program. His main research interests include electric machine design, power quality and drive controls.

Jong-Suk Ro, School of Electrical and Electronics Engineering hung-Ang University, Seoul 06974, South Korea

Jong-Suk Rob received his B.S. degree in Mechanical Engineering from Han-Yang University, Seoul, Korea, in 2001 and his Ph.D. in Electrical Engineering from Seoul National University (SNU), Seoul, Korea, in 2008.

He conducted research at the R&D center of Samsung Electronics as a Senior Engineer from 2008 to 2012. From 2012 to 2013, he was at Brain Korea 21 Information Technology of SNU, as a Post-Doctoral Fellow. He conducted research at the Electrical Energy Conversion System Research Division of the Korea Electrical Engineering & Science Research Institute as a Researcher in 2013. From 2013 to 2016, he worked at Brain Korea 21 Plus, SNU, as a BK Assistant Professor. In 2014, he was at the University of Bath, UK. Currently, he is an Associate Professor of the School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, Korea.

His research interests include the analysis and optimal design of next-generation electrical machines using smart materials such as electromagnetic, piezoelectric, and magnetic shape memory alloys.

References

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S. S. H. Bukhari, Q. Ali, J. Doval-Gandoy, and J.-S. Ro, “High-efficient brushless wound rotor synchronous machine topology based on sub-harmonic field-excitation technique,” Energies, vol. 14, no. 15, pp. 4427, 2021.

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Published

2023-05-31

How to Cite

[1]
S. S. H. . Bukhari and J.-S. . Ro, “Sub-harmonic-based Cost-effective Brushless Wound Rotor Synchronous Machine Topology”, ACES Journal, vol. 38, no. 05, pp. 371–376, May 2023.

Issue

2023: Vol 38 Iss 5

Section

General Submission

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