Title :
A novel approach to the stability analysis of boost power-factor-correction circuits
Author :
Mazumder, Sudip K. ; Nayfeh, Ali H. ; Borojevic, Dushan
Author_Institution :
Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
We investigate the stability of a boost PFC circuit, in the saturated and unsaturated regions of operation, for two separate cases: one for which the switching frequency is approaching infinity and the other for which it is finite but large. For case one, we show that global existence of a smooth hypersurface for the boost PFC circuit is not possible. Subsequently, we develop the condition for local existence. For case two, we find that within the boundary layer, the dynamics of the nonlinear system evolve on a torus. Using bifurcation theory, we show the mechanism of the torus breakdown
Keywords :
DC-DC power convertors; bifurcation; circuit stability; nonlinear dynamical systems; power factor correction; switching circuits; bifurcation theory; boost PFC circuit; boost power-factor-correction circuits; boundary layer; closed-loop converter; discontinuous converter; nonlinear system dynamics; saturated regions; smooth hypersurface; stability analysis; switching frequency; torus breakdown mechanism; unsaturated regions; Bifurcation; Circuit stability; Control systems; H infinity control; Nonlinear dynamical systems; Nonlinear systems; Predictive models; Stability analysis; Switching circuits; Switching frequency;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954367
