Electronic Science and Technology ›› 2022, Vol. 35 ›› Issue (4): 72-77.doi: 10.16180/j.cnki.issn1007-7820.2022.04.012

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Research and Implementation of APFC Low Voltage System

Fuzhuan WU,Haoyang LI,Sheng PENG,Mengna CHEN   

  1. School of Electronic and Information,Zhongyuan University of Technology,Zhengzhou 451191,China
  • Received:2020-11-30 Online:2022-04-15 Published:2022-04-15
  • Supported by:
    Key Program of National Natural Science Foundation of China(U1813201);Research Topic of Educational Technology Equipment and Practical Teaching in Henan Province(GZS138);Key Scientific and Technological Project of Henan Province(172102210602)


In view of the harmonic pollution caused by nonlinear rectifier devices in low-voltage application scenarios such as low-voltage micro-grid, lathe lighting, teaching experiment and temporary residence at construction sites, this study investigates the low-voltage APFC system using single-cycle control. The control principle of single-cycle controller UCC28180 is analyzed in detail, and the parameters of main circuit and control circuit are calculated. Based on the analysis of the average current loop and the voltage loop, the loop compensation of the zero-pole in the loop is carried out by combining the nonlinear current loop gain factor M1 of the low voltage system, the PWM slope compensation slope M2 of the voltage loop and the nonlinear gain M3, and the corresponding Bode diagram is given. Finally, the prototype system is established and the system efficiency, power factor, and total harmonic distortion rate of input current are analyzed. The results show that the low-voltage system meets the design requirements.

Key words: low-voltage micro-grid, harmonic pollution, single-cycle control, slope compensation, pole-zero, loop compensation, power factor, total harmonic distortion

CLC Number: 

  • TN702