Study on improving EMC of APFC converter with chaotic spread-spectrum technique
For the power tube of APFC converter works in the periodic switching state of high frequency,its rapidly changing voltage and current causes certain electromagnetic interference(EMI).In this paper,a new scheme of APFC converter based on chaotic spread-spectrum technique is proposed,which can make the APFC converter has high power factor and excellent electromagnetic compatibility(EMC).In this paper,firstly the mathematical expressions of the input current spectrum in the standard PWM mode and the chaotic spreadspectrum mode are deduced and simulated,and the input current spectrum of the two modes is compared.It is proved theoretically that the chaotic spread-spectrum technique can improve the EMC of APFC converter.Finally,the circuit simulation is carried out to verify the correctness of theoretical derivation and numerical simulation.
chaotic spread-spectrum APFC converter EMC input current spectrum power factor
Huang Jing Zhou Weiying Luo Jinhong
School of Electronic and Information Engineering,South China University of Technology Guangzhou,China
国际会议
重庆
英文
433-437
2017-03-25（万方平台首次上网日期，不代表论文的发表时间）