Title :
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
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;
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
DOI :
10.1109/IECON.1996.570671
