张方华
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Equivalent parallel capacitance cancellation for improving the characteristics of cm filters using negative impedance converter
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Affiliation of Author(s):自动化学院

Journal:Int. Conf. Power Energy Syst., ICPES

Abstract:In this paper, we propose an approach to cancel the equivalent parallel capacitance (EPC) of CM choke with negative capacitance, generated by negative impedance converter (NIC). With the CM choke equivalent circuit, the EPC of CM choke windings are first accurately calculated by testing its impedance using impedance analyzer. The operating principle of NIC is then analyzed and the negative capacitance is realized. Finally, the EPC cancellation is realized through the negative capacitance in parallel with one of the CM choke windings. The cancellation is verified by network analyzer and EMI measurement. Experimental results show that the proposed technique can effectively reduce the effects of EPC and significantly improve CM filter's high frequency attenuation performance. © 2018 IEEE.

Translation or Not:no

Date of Publication:2018-07-02

Co-author:Dong, Guangdong,Meng, Wuji

Correspondence Author:Dong, Guangdong,zfh

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Professor
Supervisor of Doctorate Candidates

Gender:Male

Alma Mater:南京航空航天大学

Education Level:南京航空航天大学

Degree:Doctoral Degree in Engineering

School/Department:College of Automation Engineering

Discipline:Power Electronics and Transmission

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