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

The Korean Institute of Power Electronics (전력전자학회)
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Current Control of a Single-phase PWM Converter under the Distorted Source Voltage and Frequency Condition

전원 전압 왜곡과 주파수 변동 시 단상 PWM 컨버터의 전류 제어

  • Ahn, Chang-Heon (Dept. of Electric & Electrical Engineering, Kangwon Nat'l Univ.) ;
  • Kim, Sang-Hoon (Dept. of Electric & Electrical Engineering, Kangwon Nat'l Univ.)
  • Received : 2015.06.16
  • Accepted : 2015.07.14
  • Published : 2015.08.20
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Abstract

This paper presents a current control strategy in the synchronous reference frame for a single-phase PWM converter, which ensures sinusoidal input current control under the distorted source voltage and frequency condition. Given that the distorted source voltage distorts the phase angle for PWM converter control, the input current contains the same harmonics as the source voltage. Aside from the distorted voltage, the variation in source frequency reduces the performance of input current control. To achieve sinusoidal input current control under the distorted source voltage and frequency condition, this paper proposes a compensation strategy of current reference with the distortion component extracted from the phase angle and a detection strategy of frequency variation from the output of a synchronous reference frame phase-lock loop. The experimental results confirm the validity of the proposed method under the distorted source voltage and frequency condition.

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References

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