Title :
Subharmonics and chaos in a controlled switched-mode power converter
Author :
Hamill, D.C. ; Jeffries, David J.
Author_Institution :
Dept. of Electron. & Electr. Eng., Surrey Univ., Guildford, UK
fDate :
8/1/1988 12:00:00 AM
Abstract :
A difference equation is derived for the output current, at successive switch events, of a simple switching-regulator DC/DC converter using a pulsewidth modulator. Wideband feedback control of the nonlinear circuit leads to a one-dimensional return map of zigzag form from which a stability criterion is found. Operation in the unstable region is described and verified by numerical simulation. The system exhibits a noisy bifurcation, chaos and subharmonics
Keywords :
chaos; feedback; harmonics; nonlinear network analysis; power convertors; pulse width modulation; stability criteria; switching circuits; PWM; chaos; difference equation; noisy bifurcation; nonlinear circuit; numerical simulation; one-dimensional return map; output current; pulsewidth modulator; stability criterion; subharmonics; successive switch events; switched-mode power converter; switching-regulator DC/DC converter; wideband feedback control; zigzag form; Chaos; Circuit stability; DC-DC power converters; Difference equations; Feedback control; Nonlinear circuits; Pulse modulation; Pulse width modulation converters; Switches; Wideband;
Journal_Title :
Circuits and Systems, IEEE Transactions on
