Affiliations: [a] Department of Electronic, Electrical, Control and
Instrumentation Engineering, Hanyang University, Seoul, Korea | [b] Department of Electrical and Computer Engineering,
University of Wisconsin-Madison, Madison, WI, USA
Correspondence:
[*]
Corresponding author: Byung-il Kwon, Department of Electronic,
Electrical, Control and Instrumentation Engineering, Hanyang University, Seoul,
Korea. Tel.: +82 31 409 1277; Fax: +82 31 409 1277; E-mail:
[email protected]
Abstract: This paper proposes a novel concentrated flux interior permanent
magnet (IPM) type brushless DC (BLDC) motor that replaces low-price ferrite
magnets, which has similar characteristics as the conventional IPM type BLDC
motor that uses expensive NdFeB magnets. To minimize the cogging torque which
is a disadvantage of the proposed model, optimal designs of rotor and permanent
magnet were performed. In optimal design process, the Kriging method based on
the Latin hypercube sampling (LHS) and a genetic algorithm (GA) are applied due
to suitability to non-linear data. Furthermore, to improve the average torque
of the proposed model, the current excitation range was changed according to
inductance. Through the optimal design process and the proper current
excitation range, we show that the optimal model using low-price ferrite
magnets has similar performance as the conventional IPM type BLDC motor using NdFeB magnets.
