Title :
"Intermittent" chaos and subharmonics in switching power supplies
Author :
Tse, Chi K. ; Zhou, Yufei ; Lau, Francis C M ; Qiu, Shui-Sheng
Author_Institution :
Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., China
Abstract :
This paper studies the "intermittent" chaos and subharmonics observed in switching dc/dc converters using a simple circuit model that describes possible unintended coupling of some weak spurious signal to the converter. The study shows that the signal strength and frequency of the intruding signal are vital parameters that affect the type of intermittent behaviour and the period of intermittency. Simulations and experimental results are presented.
Keywords :
DC-DC power convertors; bifurcation; chaos; circuit simulation; electromagnetic interference; nonlinear network analysis; power conversion harmonics; switched mode power supplies; circuit model; conducted EMI; intermittent chaos; intruding signal frequency; nonlinear systems; period of intermittency; radiated EMI; signal strength; simulations; subharmonics; switching dc/dc converters; switching power supplies; time-bifurcation diagrams; weak spurious signal coupling; Additives; Buck converters; Chaos; Coupling circuits; DC-DC power converters; Frequency; Power engineering and energy; Power supplies; Switching circuits; Voltage;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205023
