Investigation of the effect of different power degree NdFeB magnets used in interior permanent magnet brushless direct current motor (IPMBLDC) on motor performance Gömülü kalici miknatisli-firçasiz doǧru akim motorda (IPMBLDC) kullanilan farkli güç dereceli NdFeB miknatislarin motor performansina etkisinin incelenmesi

Tören M., Mollahasanoğlu H.

Journal of the Faculty of Engineering and Architecture of Gazi University, vol.38, no.3, pp.1389-1401, 2023 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 3
  • Publication Date: 2023
  • Doi Number: 10.17341/gazimmfd.988877
  • Journal Name: Journal of the Faculty of Engineering and Architecture of Gazi University
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Art Source, Compendex, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.1389-1401
  • Keywords: Interior Pmbldc, Finite element method, Permanent magnets, Motor performance, BHmax
  • Recep Tayyip Erdoğan University Affiliated: Yes


Brushless Direct Current (BLDC) motors are known as synchronous motors and used in industrial areas due to their advantageous features. NdFeB magnets used in BLDC motors and produced at different power levels of rare earth elements are preferred due to their excellent magnetic properties. Although physical factors and environmental conditions have an effect on permanent magnets, the performance values are determined by the maximum energy efficiency (BHmax), residual flux density (Br,) and intrinsic coercive force (Hci ) parameters. In this study, Alnico, Ceramic, SmCo and NdFeB magnets used in BLDC motors with permanent magnet rotor structure and the effects of these magnets on motor performance parameters are analyzed. For motor performance, magnet types are compared by considering speed, efficiency and torque values. The magnetic properties of the NdFeB are determined by analysis comparisons. Therefore, the effects of the types of these magnets obtained at different power degrees (N28-N38-N42-N52) on the engine performance are included in the study by considering the operating conditions at different temperatures (20°C ,60°C ,80°C ). In the study, the effects of NdFeB on motor heat transfer are determined by an inner mounted rotor IPMBLDC motor with 2.45 kW power, the analysis made with finite element method (FEM).