한국융합학회논문지 (Journal of the Korea Convergence Society)

  • 제9권4호
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  • Pages.1-7
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  • 2018
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  • 2233-4890(pISSN)
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  • 2713-6353(eISSN)
한국융합학회 (Korea Convergence Society)
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전기자동차의 연비향상을 위한 매입형 영구자석 동기전동기의 효율특성 분석

Analysis on Efficiency Characteristics of IPMSM for fuel Economy Improve of Electric Vehicle

  • Kim, Jong-Hee (Department of Electrical Engineering, Hanbat National University) ;
  • Kim, Ki-Chan (Department of Electrical Engineering, Hanbat National University) ;
  • Lee, Dae-Dong (Department of Electrical Engineering, Hanbat National University)
  • 투고 : 2018.02.06
  • 심사 : 2018.04.20
  • 발행 : 2018.04.28
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초록

전기자동차용 전동기는 운전모드에 따라 효율특성이 차이가 나기 때문에 저속 및 고속의 운전모드에서 고효율특성을 평가하기 위한 연구는 매우 중요하다. 따라서 전기자동차 구동용 전동기의 고토크 및 고출력 밀도, 고효율특성을 변경할 수 있는 설계 방안이 필요하다. 본 논문에서는 매입형 영구자석 동기전동기의 고정자와 회전자의 직경비를 각각 0.62, 0.65, 0.68로 변경 설계하여 전 운전구간의 효율특성과 시내 및 고속도로 운전모드에서의 평균효율특성을 분석하였다. 전 운전구간의 효율특성을 분석한 결과, 직경비가 증가할수록 고효율 구간이 저속 저토크 구간으로 이동하고, 직경비가 감소할수록 고효율 구간이 고속 저토크 부근으로 이동함을 확인하였다. 시내 및 고속도로 운전모드에서의 평균효율특성을 분석한 결과, 직경비 0.68 모델이 직경비 0.63 및 0.65 모델보다 평균효율이 높게 분석되었으며 시내 및 고속도로 주행모드에 적합함을 확인하였다.

Electric motors for electric vehicles differ in efficiency characteristics depending on the operation modes, studies for evaluating high efficiency characteristics in low speed and high speed operation modes are very important. Therefore, it is necessary to design method that can change the high torque, high output density, and high efficiency characteristics of driving motors for electric vehicles. In this paper, the diameter ratio of stator and rotor for the interior permanent magnet synchronous motor is change of designed 0.62, 0.65, and 0.68, respectively, and the efficiency characteristics of the entire operation section, average efficiency characteristics of the city driving modes and express highway driving modes are analyzed. As a result of analyzing the efficiency characteristics of the entire operating section, it was confirmed that as the diameter ratio increases, the high efficiency section moves to the low speed and low torque section and the high efficiency section moves to the high speed and low torque neighborhood as the diameter ratio decreases. As a result of analyzing the average efficiency characteristics in the city driving modes and express highway driving modes, the average efficiency of 0.68 model is analyzed to be more efficient than the 0.63 and 0.65 model ratio, and it is confirmed that it is suitable for city driving modes and express highway driving modes.

키워드

참고문헌

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