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Influence of soft magnetic material in a permanent magnet synchronous machine with a commercial induction machine stator

Isabelle Hofman (UGent) , Peter Sergeant (UGent) and Alex Van den Bossche (UGent)
(2012) IEEE TRANSACTIONS ON MAGNETICS. 48(4). p.1645-1648
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Abstract
This paper presents the efficiency study of a 6-pole and 2-pole induction motor (IM), converted into a 6-pole and 2-pole permanent magnet synchronous machine (PMSM). Firstly, the stator of the IM was kept unchanged and the rotor was converted into a permanent magnet (NdFeB magnets) rotor, resulting in higher average efficiency. Secondly, we investigated how much the efficiency can be increased by replacing the electrical steel in the stator by another material grade. The numerical approach is based on the finite element method (FEM), taking into account the rotor movement. Iron losses are computed according to the loss separation theory. From measurements and simulations, it is observed that the efficiency increases significantly compared to the original IM. The average efficiency of the original 1.5 kW IM converted into the 1.5 kW PMSM led to a 14% higher efficiency in a speed range 0.5 Omega(nom) - Omega(nom) and torque range 0.5T(nom) - T-nom. When the stator iron is replaced by M235-35A laminations with the same geometry, the average efficiency increases by an additional 2% for the 1.5 kW PMSM with modified stator.
Keywords
induction machine, permanent magnet synchronous machine, finite element analysis, Efficiency, MOTOR

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Chicago
Hofman, Isabelle, Peter Sergeant, and Alex Van den Bossche. 2012. “Influence of Soft Magnetic Material in a Permanent Magnet Synchronous Machine with a Commercial Induction Machine Stator.” Ieee Transactions on Magnetics 48 (4): 1645–1648.
APA
Hofman, I., Sergeant, P., & Van den Bossche, A. (2012). Influence of soft magnetic material in a permanent magnet synchronous machine with a commercial induction machine stator. IEEE TRANSACTIONS ON MAGNETICS, 48(4), 1645–1648. Presented at the 20th Conference on Soft Magnetic Materials (SMM).
Vancouver
1.
Hofman I, Sergeant P, Van den Bossche A. Influence of soft magnetic material in a permanent magnet synchronous machine with a commercial induction machine stator. IEEE TRANSACTIONS ON MAGNETICS. 2012;48(4):1645–8.
MLA
Hofman, Isabelle, Peter Sergeant, and Alex Van den Bossche. “Influence of Soft Magnetic Material in a Permanent Magnet Synchronous Machine with a Commercial Induction Machine Stator.” IEEE TRANSACTIONS ON MAGNETICS 48.4 (2012): 1645–1648. Print.
@article{3003395,
  abstract     = {This paper presents the efficiency study of a 6-pole and 2-pole induction motor (IM), converted into a 6-pole and 2-pole permanent magnet synchronous machine (PMSM). Firstly, the stator of the IM was kept unchanged and the rotor was converted into a permanent magnet (NdFeB magnets) rotor, resulting in higher average efficiency. Secondly, we investigated how much the efficiency can be increased by replacing the electrical steel in the stator by another material grade. The numerical approach is based on the finite element method (FEM), taking into account the rotor movement. Iron losses are computed according to the loss separation theory. From measurements and simulations, it is observed that the efficiency increases significantly compared to the original IM. The average efficiency of the original 1.5 kW IM converted into the 1.5 kW PMSM led to a 14\% higher efficiency in a speed range 0.5 Omega(nom) - Omega(nom) and torque range 0.5T(nom) - T-nom. When the stator iron is replaced by M235-35A laminations with the same geometry, the average efficiency increases by an additional 2\% for the 1.5 kW PMSM with modified stator.},
  author       = {Hofman, Isabelle and Sergeant, Peter and Van den Bossche, Alex},
  issn         = {0018-9464},
  journal      = {IEEE TRANSACTIONS ON MAGNETICS},
  keyword      = {induction machine,permanent magnet synchronous machine,finite element analysis,Efficiency,MOTOR},
  language     = {eng},
  location     = {Kos Isl, GREECE},
  number       = {4},
  pages        = {1645--1648},
  title        = {Influence of soft magnetic material in a permanent magnet synchronous machine with a commercial induction machine stator},
  url          = {http://dx.doi.org/10.1109/TMAG.2011.2173470},
  volume       = {48},
  year         = {2012},
}

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