Title :
A simulation platform of Switched-mode Power Supplies for EMI filter design
Author :
Zheng, Changbeng ; Chen, Chen ; Chen, Henglin
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
This paper presents a simulation platform of Switched-mode Power Supplies utilizing the characteristic of noise generation and coupling mechanism to predict the noise feature and design EMI filter in flyback converter. The paper also introduces the simulation algorithms which comprise noise source model, filter model, CM circuit model, DM circuit model and the method to obtain EMI spectrum. The bandwidth-effects-FFT computing method is used to analyze the spectrum of noise source, and the identified noise coupling paths are used to build up simulation circuit models. The simulation platform and the models are verified by experimental results. The simulation platform provides a simple and convenient way for EMI filter design of switched-mode power supplies within a certain frequency range.
Keywords :
electromagnetic interference; fast Fourier transforms; interference suppression; power convertors; power filters; switched mode power supplies; CM circuit model; DM circuit model; EMI filter design; EMI spectrum; bandwidth-effect-FFT computing method; coupling mechanism; filter model; flyback converter; noise coupling path; noise generation; noise source model; simulation circuit model; simulation platform; switched-mode power supplies; Computational modeling; Couplings; Delta modulation; Electromagnetic interference; Frequency measurement; Integrated circuit modeling; Noise;
Conference_Titel :
Electromagnetic Compatibility (APEMC), 2012 Asia-Pacific Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-1-4577-1557-0
Electronic_ISBN :
978-1-4577-1558-7
DOI :
10.1109/APEMC.2012.6237963
