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결선법과 고장 모드에 따른 BLDC 모터의 비가역 감자 특성 연구
이찬우(ChanWoo Lee),김수원(SuWon Kim),오지환(JiHwan Oh),고재유(JaeYu Ko) 한국자동차공학회 2019 한국자동차공학회 부문종합 학술대회 Vol.2019 No.5
The winding connection type for driving the BLDC motor includes a Y connection and a Delta connection, and selects the winding connection type considering the advantages and disadvantages of each type and the application of the BLDC motor. Generally, we compare and consider the impact on the design structure, torque ripple, noise, consumption current, and control characteristics. However, in the case of motors used in automotive system, various failure modes are occurred, and thereby safety and failure characteristics should be considered and reflected to the design of the motor. In this paper, a new standard for selecting the connection type is proposed by performing research on irreversible demagnetization characteristics by the winding connection type and the circuit failure mode. For this purpose, design parameters by the winding connection type are compared, and basic performance in a normal condition and characteristics of irreversible demagnetization are compared. In addition, irreversible demagnetization characteristics according to failure modes such as Short and Open of the circuit are compared, and confirm the impact of the winding connection type. The research is conducted on a BLDC motor for automotive system and the validation is carried out through FEA (Finite Element Analysis) electromagnetic field analysis tool.
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