TY - GEN
T1 - Model and simulation on common mode radiation of a flyback power supply
AU - He, Junping
AU - Gao, Yuan
AU - Ji, Kejian
PY - 2012
Y1 - 2012
N2 - It's well known a switched-mode power supply is easily to produce strong electromagnetic radiation emission and fails in EMC test for its RFI exceeding limits between 30MHz-200MHz. Based on asymmetry line antenna theory, a novel far field common mode radiation model, including an equivalent driving source, radiation structure and some key influence factors, is identified and built up for a small flyback power supply. Radiation characteristics of this model are predicted by using Ansoft HFSS and its effectiveness is verified by experiment. In the end, the radiation role of some key factors, such as the length of output cable, CM impedance of AC grid, layout of cable and reflected ground, are studied using simulation in detail.
AB - It's well known a switched-mode power supply is easily to produce strong electromagnetic radiation emission and fails in EMC test for its RFI exceeding limits between 30MHz-200MHz. Based on asymmetry line antenna theory, a novel far field common mode radiation model, including an equivalent driving source, radiation structure and some key influence factors, is identified and built up for a small flyback power supply. Radiation characteristics of this model are predicted by using Ansoft HFSS and its effectiveness is verified by experiment. In the end, the radiation role of some key factors, such as the length of output cable, CM impedance of AC grid, layout of cable and reflected ground, are studied using simulation in detail.
UR - https://www.scopus.com/pages/publications/84864856132
U2 - 10.1109/APEMC.2012.6237800
DO - 10.1109/APEMC.2012.6237800
M3 - 会议稿件
AN - SCOPUS:84864856132
SN - 9781457715587
T3 - cccc2012 Asia-Pacific Symposium on Electromagnetic Compatibility, APEMC 2012 - Proceedings
SP - 117
EP - 120
BT - 2012 Asia-Pacific Symposium on Electromagnetic Compatibility, APEMC 2012 - Proceedings
T2 - 2012 Asia-Pacific Symposium on Electromagnetic Compatibility, APEMC 2012
Y2 - 21 May 2012 through 24 May 2012
ER -