Design of an input filter to suppress conducted EMI of a single phase UPS inverter

Author

Hua, Chihchiang ; Shen, Chinming ; Peng, Gengshing

Author_Institution

Dept. of Electr. Eng., Nat. Yunlin Inst. of Technol., Taiwan

Volume

3

fYear

1996

fDate

5-10 Aug 1996

Firstpage

1699

Abstract

A procedure to design an input filter for a single-phase UPS inverter to suppress conducted electromagnetic interference (EMI) is presented in this paper. The causes of the conducted common mode (CM) and differential mode (DM) EMI in a single-phase inverter are analyzed. Other methods to suppress EMI, such as the adoption of a snubber circuit and an input EMI filter, are discussed and the experiments were performed to verify their performance. Furthermore, effects due to the existence of parasitic components in the filter are illustrated. Finally, an EMI filter for a 400 W single-phase UPS inverter is designed to meet the VDE 0871 class A standard

Keywords

DC-AC power convertors; electromagnetic interference; invertors; power filters; uninterruptible power supplies; 400 W; VDE 0871 class A standard; common mode EMI; conducted EMI suppression; differential mode EMI; input EMI filter; input filter design; parasitic components; single-phase UPS inverter; snubber circuit; Circuit noise; Electromagnetic interference; Frequency; Impedance; Inverters; Magnetic separation; Power harmonic filters; Snubbers; Uninterruptible power systems; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control, and Instrumentation, 1996., Proceedings of the 1996 IEEE IECON 22nd International Conference on

Conference_Location

Taipei

Print_ISBN

0-7803-2775-6

Type

conf

DOI

10.1109/IECON.1996.570671

Filename

570671