Modeling and Analysis of Digital Active EMI Filter with Time Delay
JI Jun-peng1,2, HU Xue-li1, CHEN Wen-jie2, ZENG Guang1, HUA Zhi-guang1
1. Department of Electrical Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China;
2. School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
With the development of the digital processing technology,and the sharp increasing of the speed and accuracy of data acquisition,the DAEF technology becomes a new direction of the EMI filter technology.As the frequency of EMI signal is high,the delay time of system has great impact on system performance and cannot be ignored,which needs more study.In this paper,the reason of the delay time existence was analyzed in the DAEF system,and with consideration of delay time the model of DAEF system was built.The impact of the delay time on the EMI filter performance was analyzed by simulation.The DAEF control system platform was built based on FPGA.The correctness of the DAEF model with delay character was verified.The influence rule of delay time on the filter performance of DAEF system was revealed.The results help to further study and widespread application of digital active EMI filter.
姬军鹏, 胡雪利, 陈文洁, 曾光, 华志广. 数字有源EMI滤波系统延迟的建模与分析[J]. 电子学报, 2015, 43(9): 1793-1799.
JI Jun-peng, HU Xue-li, CHEN Wen-jie, ZENG Guang, HUA Zhi-guang. Modeling and Analysis of Digital Active EMI Filter with Time Delay. Chinese Journal of Electronics, 2015, 43(9): 1793-1799.
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2015, Vol. 43 
