Conducted EMI in PWM inverter for household electric appliance

Author

Son, Yo-Chan ; Sul, Seung-Ki

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea

Volume

4

fYear

2001

Firstpage

2441

Abstract

This paper presents the characteristics of the conducted EMI in the PWM inverter for household electric appliances and proposes a new active common-mode EMI filter. The conducted EMI spectrums are measured with changing the active/passive filter stages and the common-mode EMI is extracted from the total conducted EMI spectrums in order to identify the dominant source of the conducted EMI. For better understanding of the conducted EMI, the noise sources are identified and the characteristics of the noise source and its propagation paths are investigated from the conducted EMI spectrums measured. Based on the measurement and analysis of the conducted EMI in the PWM inverter, the effective method and procedure of designing filter stages are developed in order to attenuate the conducted EMI effectively.

Keywords

PWM invertors; active filters; domestic appliances; electromagnetic interference; passive filters; PWM inverter; active common-mode EMI filter; active filter stage; common-mode EMI; conducted EMI; conducted EMI attenuation; filter stages design; household electric appliance; noise propagation paths; noise sources identification; passive filter stage; total conducted EMI spectrum; AC motors; Active filters; Attenuation measurement; Electromagnetic compatibility and interference; Electromagnetic interference; Home appliances; Pulse width modulation inverters; Radio frequency; Semiconductor device noise; Signal generators;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting. Conference Record of the 2001 IEEE

Conference_Location

Chicago, IL, USA

ISSN

0197-2618

Print_ISBN

0-7803-7114-3

Type

conf

DOI

10.1109/IAS.2001.955963

Filename

955963