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With the rapid development of digital signal processing chip in recent years, DSP began to be used in more switching power supply. The advantages of digital control of their own, making the digital control PFC become a hotspot research. However, compared with the simulation system, the digital control technology still has many problems. In this paper, the problem of digital PI compensator as a voltage compensator is discussed, and the Single-pole voltage loop compensator is used in digital control PFC circuit. Because current loop bandwidth is narrow, a method to expand current loop bandwidth is put forward. Output power 300 W of prototype is made, and experimental results verify the correctness of the theory.

KEYWORDS

PI compensator; Single-pole Compensator; the Bandwidth of Current Loop

Cite this paper

X. Zhang, W. Zhang, P. Mao and D. Fu -A Digital Controller Design Method to Improve Performance of PFC Converter,- Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 162-166. doi: 10.4236-epe.2013.54B031.





Autor: Xiaoqiang Zhang, Weiping Zhang, Peng Mao, Deyi Fu

Fuente: http://www.scirp.org/



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