Conductor Design Method Considering AC Resistance for High Efficiency of PMSM using High Fill Factor Winding
2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC)(2024)
Abstract
This paper proposes the design method of conductor considering AC resistance for high efficiency of PMSM using high fill factor winding. To achieve high power density of the motor, high fill factor winding such as hairpin winding is used. MSO coils were also developed for the same purpose. However, AC resistance is generated in the high fill factor winding used in the motor, which adversely affects the efficiency of the motor. For high efficiency of the motor using high fill factor windings, the AC resistance must be reduced. Therefore, in order to reduce the AC resistance, a design method in which the size of the respective conductor layers are different is proposed. In this paper, the method of reducing AC resistance is verified through analytical methods and FEA. Next, the validity of the proposed method is verified through performance evaluation of the prototype motor designed through the proposed method.
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Key words
AC resistance,high efficiency,high fill factor winding,MSO coils,permanent magnet synchronous motor
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