An Electronic Model of Capacitor Charging Power Supply Considering Transient Switching Interference

Abstract:

In this paper, a mathematical analysis of the EMI(Electromagnetic Interference) for a 20kHz/10kV capacitor charging power supply in frequency-domain is presented, and a related circuit model considering the transient switching interference is proposed. Due to the high working frequency and the device-switching transitions, the conducted EMI caused by the charging circuit which includes the harmonics of grid frequency, working frequency and device-switching transition frequencies. Thus under certain working situations or loads parallel power supply, the interference may cause charging failure. To solve this problem, a high frequency transformer modeled with stray capacitances and an approximation of the device-switching transition is applied in the Pspice-based simulation model, and a mathematical analysis in frequency-domain is presented.

• Periodical: Advanced Materials Research (Volumes 706-708)
• Pages: 1738-1741
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.706-708.1738
• Online since: June 2013
• Authors: Xiao Han, Ying Hui Gao, Yao Hong Sun, Ping Yan
• Keywords: Capacitor Charging Power Supply, Distributed Parameter Circuits, Electronic Technology, Frequency Domain Analysis, Switching Transients

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