전력전자학회논문지 (The Transactions of the Korean Institute of Power Electronics)

  • 제21권2호
  • /
  • Pages.117-125
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  • 2016
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  • 1229-2214(pISSN)
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  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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구형파 구동 BLDCM의 동기정류를 사용한 인버터 손실 저감

Inverter Losses Reduction for Rectangular Drive BLDCM using Synchronous Rectification

  • Nam, Myung-Joon (Research Center, VC Tech.) ;
  • Kim, Hag-Wone (Dept. of Control & Instrumentation Engineering, Korea Nat'l Univ. of Transportation) ;
  • Cho, Kwan-Yuhl (Dept. of Control & Instrumentation Engineering, Korea Nat'l Univ. of Transportation)
  • 투고 : 2015.12.21
  • 심사 : 2016.01.18
  • 발행 : 2016.04.20
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초록

In this paper, the inverter switch losses of BLDC motor for three types of PWM methods and power devices were analyzed. When the BLDC motor is driven at low currents, the inverter switch losses for MOSFET are low because MOSFET operates like resistance. However, the inverter switch losses for IGBT are higher than MOSFET due to its large turn-off losses. Moreover, synchronous rectification switching method is adaptable because MOSFET has 2-channel. So, MOSFET can be driven with more low impedance and losses. For low power inverter with MOSFET, the power losses of unified PWM are lower than that of unipolar and bipolar PWM. Proposed method and losses analysis results are verified by examination and simulation using Matlab/Simulink.

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참고문헌

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