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논문 기본 정보

자료유형
학술저널
저자정보
Yi-Wen Geng (China University of Mining and Technology) Hai-Wei Liu (China University of Mining and Technology) Ren-Xiong Deng (China University of Mining and Technology) Fang-Fang Tian (China University of Mining and Technology) Hao-Feng Bai (Aalborg University) Kai Wang (China University of Mining and Technology)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.18 No.1
발행연도
2018.1
수록면
171 - 184 (14page)

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초록· 키워드

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Unbalanced and distorted grid voltages cause the grid side current of a current source PWM rectifier to be heavily distorted. They can also cause the DC-link current to fluctuate with a huge amplitude. In order to enhance the performance of a current-source PWM rectifier under unbalanced and harmonic grid voltage conditions, a mathematical model of a current-source PWM rectifier is established and a flexible multi-objective control strategy is proposed to control the DC-link current and grid-current. The fundamental positive/negative sequence, 5<SUP>th</SUP> and 7<SUP>th</SUP> order harmonic components of the grid voltage are first separated with the proposed control strategy. The grid current reference are optimized based on three objectives: 1) sinusoidal and symmetrical grid current, 2) sinusoidal grid current and elimination of the DC-current 2<SUP>nd</SUP> order fluctuations, and 3) elimination of the DC-current 2<SUP>nd</SUP> and 6<SUP>th</SUP> order fluctuations. To avoid separation of the grid current components, a multi-frequency proportional-resonant controller is applied to control the fundamental positive/negative sequence, 5<SUP>th</SUP> and 7<SUP>th</SUP> order harmonic current. Finally, experimental results verify the effectiveness of proposed control strategy.

목차

Abstract
I. INTRODUCTION
II. MATHEMATICAL MODEL OF A CSR UNDER UNBALANCED AND DISTORTED GRID VOLTAGE CONDITIONS
III. CONTROL STRATEGY FOR A CSR UNDER UNBALANCED AND DISTORTED GRID VOLTAGE CONDITIONS
IV. SIMULATION RESULTS
V. EXPERIMENTAL RESULTS
VI. CONCLUSION
REFERENCES

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