Affiliations: Department of Electronic Systems Engineering, Hanyang University, Ansan, Korea
Correspondence:
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Corresponding author: Byung-Il Kwon, Department of Electronic Systems Engineering, Hanyang University, Ansan 426-791, Korea. E-mail:bikwon@hanyang.ac.kr
Abstract: This paper proposes a new topology that combines the flux
barrier configuration and the split permanent magnet structure of spoke type
interior permanent magnet motor (SIPM) with concentrated winding to improve
the average torque as well as the quality of torque. The flux barriers can
reduce the leakage flux between the magnets inserted in the rotor. Whereas,
splitting the magnet across the steel core can decrease the magnetic
resistance of the rotor shape. Therefore, both techniques are combined to
get their benefits together to improve the output characteristic. The
structure is further optimized using Kriging method and Genetic Algorithm to
obtain an efficient design within given constraints of the machine. It is
demonstrated that torque constant of optimal model is improved. Moreover,
cogging torque and torque ripples are minimized. Finite element analysis is
performed to verify the proposed topology and the optimal design.
Keywords: Ferrite magnets, optimization, spoke type motor
