Structural Analysis of Induction Machine and Switched Reluctance Machine

Abstract

Here we present a comprehensive analysis of structural performance of Induction Machine (IM) and Switched Reluctance Machine (SRM) rotors under different operational conditions. Electric machines are susceptible to forces of diverse origins. In addition to traditionally considered magnetic and centrifugal forces, this article discusses independent and inclusive effects of thermal expansion and shaft attachment techniques on structural integrity of the machines. A comparative analysis of structural performance of IMs and SRMs has also been performed, under a range of scenarios, to facilitate application-specific machine selection from a structural perspective.

Keywords:

• induction machine
• switched reluctance machine
• in-rush current forces
• interference fit
• thermal stress
• centrifugal forces

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Lizon Maharjan

Lizon Maharjan received the B.S. degree in electrical engineering from Texas Christian University, Fort Worth, Texas, in 2011 and the M.S. degree in electrical engineering from The University of Texas at Dallas (UTD), Richardson, Texas in 2014. He is currently working towards the Ph.D. degree focusing on power electronics and energy systems at UTD. He is a graduate research assistant at the Renewable Energy and Vehicular Technology (REVT) laboratory, UTD. His research interests are smart-grid, power electronics, motor drives, and electric machines.

Shiliang Wang

Shiliang Wang was born in Mudanjiang, Heilongjiang, China. He received his B.S. degree and M.S. degree from Harbin University of Science and Technology and Harbin Institute of Technology, respectively. He Joined REVT Lab at University of Texas at Dallas in 2013 and received his Ph.D. degree from University of Texas at Dallas in 2017. Currently, he is an electrical engineer at Lennox International Inc. His research interests include electromagnetic design and analysis of electric machine, vibration analysis for electric machine, control of electric machine, and optimization of electric machine.

Babak Fahimi

Dr Babak Fahimi received his B.S. and M.S. degrees in Electrical Engineering with the highest distinction from the University of Tehran, Iran in 1991 and 1993, respectively. He earned his Ph.D. in Electrical Engineering from Texas A&M University in 1999. Dr Fahimi has been the recipient of DAAD Scholarship (1993–1995), IEEE R.M. Bass Power Electronics Young Investigator Award (2003), SAE Ralph Teetor Educational Award (2008), Fulbright Scholarship in 2010, and IEEE Cyril Veinott Electromechanical Energy Conversion Award in 2015. Dr Fahimi has coauthored 330 scientific articles, 15 book chapters, and holds 19 US patents, 6 pending patents. He has supervised 26 Ph.D. and 20 M.S. students. Dr Fahimi is a distinguished Chair of Engineering and the founding director of the renewable energy and vehicular technology at the University of Texas at Dallas. He is a Fellow of IEEE for contributions towards modeling and analysis of adjustable speed AC motor drives.