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

The Korean Institute of Power Electronics (전력전자학회)
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Reduced Current Distortion of Three-Phase Three-Switch Buck-Type Rectifier using Carrier Based PWM in EV Traction Battery Charging Systems

전기 자동차 배터리 충전장치용 3상 3스위치 전류형 정류기의 전류 왜곡 감소를 위한 펄스 폭 변조 스위칭 기법

  • Chae, Beomseok (Dept. of Electrical Engineering, Smart Grid Research Center, Chonbuk Nat'l University) ;
  • Kang, Taewon (Dept. of Electrical Engineering, Smart Grid Research Center, Chonbuk Nat'l University) ;
  • Kang, Tahyun (Dept. of Electrical Engineering, Smart Grid Research Center, Chonbuk Nat'l University) ;
  • Suh, Yongsug (Dept. of Electrical Engineering, Smart Grid Research Center, Chonbuk Nat'l University)
  • Received : 2015.05.07
  • Accepted : 2015.07.09
  • Published : 2015.08.20
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Abstract

This study investigates an economic and highly efficient power-converter topology and its modulation scheme for 60 kW rapid EV charger system. The target system is a three-phase three-switch buck-type rectifier topology. A new carrier-based PWM scheme, which is characterized by simple implementation using logic gates, is introduced in this paper. This PWM scheme replaces the diode rectifier equivalent switching state with an active switching state to produce the same effective current flowing path. As a result, the distortion of input current during the polarity reversal of capacitor line voltage can be mitigated. The proposed modulation technique is confirmed through simulation verification. The proposed modulation technique and its implementation scheme can expand the operation range of the three-phase three-switch buck-type rectifier with high-quality AC input and capacitor ripple current.

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References

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