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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.1
- 수록면
- 64 - 73 (10page)
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초록· 키워드
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The stability of PWM rectifiers with a deadbeat current controller is seriously influenced by computation time delays and lowpass filters inserted into the current-sampling circuit. Predictive current control is often adopted to solve this problem. However, grid current predictive precision is affected by many factors such as grid voltage estimated errors, plant model mismatches, dead time and so on. In addition, the predictive current error aggravates the grid current distortion. To improve the grid current predictive precision, an improved deadbeat current controller with a repetitive-control-based observer to predict the grid current is proposed in this paper. The design principle of the proposed observer is given and its stability is discussed. The predictive performance of the observer is also analyzed in the frequency domain. It is shown that the grid predictive error can be decreased with the proposed method in the related bode diagrams. Experimental results show that the proposed method can minimize the current predictive error, improve the current loop robustness and reduce the grid current THD of PWM rectifiers.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. PERFORMANCE ANALYSIS OF DEADBEAT CURRENT CONTROL
Ⅲ. IMPROVED DEADBEAT CURRENT CONTROL METHOD WITH THE PROPOSED OBSERVER
Ⅳ. EXPERIMENT RESULTS
Ⅴ. CONCLUSIONS
REFERENCES
참고문헌 (25)
참고문헌 신청
G. W. Chang / 2004 / Modeling characteristics of harmonic currents generated by high-speed railway traction drive converters / IEEE Transactions on Power Delivery 19(2):766~773
M. Macan / 2007 / Presentation of a four-quadrant converter based system in traction applications-reference to modeling, simulation and analysis / European Conference on Power Electronics and Applications :1~9
C. Heising / 2008 / Single-phase 50-kw 16.7-Hz four-quadrant line-side converter for railway traction application / Proceeding of EPE-EPMC :521~527
O. Kukrer / 1997 / Control strategy for single-phase PWM rectifiers / Electronics Letters 33(21):1745~1746
H. Chih-Chiang / 2009 / A digital predictive current control with improved sampled inductor current for cascaded inverters / IEEE Transactions on Industrial Electronics 56(5):1718~1726
M. Macan / 2007 / Presentation of a four-quadrant converter based system in traction applications-reference to modeling, simulation and analysis / European Conference on Power Electronics and Applications :1~9
C. Heising / 2008 / Single-phase 50-kw 16.7-Hz four-quadrant line-side converter for railway traction application / Proceeding of EPE-EPMC :521~527
O. Kukrer / 1997 / Control strategy for single-phase PWM rectifiers / Electronics Letters 33(21):1745~1746
H. Chih-Chiang / 2009 / A digital predictive current control with improved sampled inductor current for cascaded inverters / IEEE Transactions on Industrial Electronics 56(5):1718~1726
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