Title :
Adaptive nonlinear control of DC-DC buck/boost converters with parasitic elements consideration
Author :
Salimi, Mahdi ; Soltani, Jafar ; Zakipour, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Islamic Azad Univ., Ardebil, Iran
Abstract :
In this paper, a novel approach based on Adaptive Backstepping is proposed for designing current controller in buck/boost DC to DC converter. This method is based on more accurate modeling of converter considering effect of circuit parasitic elements, better modeling of semiconductor switches and accounting for equivalent series resistance of inductor. Also, during controller designing process, load resistance has been assumed to be uncertain and an appropriate estimate of this parameter has been done by choosing a suitable Lyapunov function. Simulation results show clearly that designed controller has fast dynamic response and no steady-state error problem. The proposed method can stabilize the converter during wide variation of load resistance as well.
Keywords :
DC-DC power convertors; Lyapunov methods; adaptive control; control system synthesis; dynamic response; electric current control; nonlinear control systems; semiconductor switches; Lyapunov function; accounting; adaptive backstepping; adaptive nonlinear control; circuit parasitic elements; current controller design; dc-dc buck-boost converters; equivalent series resistance; fast dynamic response; inductor; load resistance; semiconductor switches; Adaptation models; Backstepping; DC-DC power converters; Equations; Inductors; Mathematical model; Resistance; DC to DC converter; Nonlinear and Adaptive control; more accurate modeling;
Conference_Titel :
Control, Instrumentation and Automation (ICCIA), 2011 2nd International Conference on
Conference_Location :
Shiraz
Print_ISBN :
978-1-4673-1689-7
DOI :
10.1109/ICCIAutom.2011.6356674
