Title :
Adaptive control of DC-DC converters based on input equivalent disturbance
Author :
Wenjin, Hu ; Donghua, Zhou
Author_Institution :
Dept. of Electron. Inf. Eng., Chongqing Univ. of Sci. & Technol., Chongqing
Abstract :
DC-DC converter is a class of variable-structure nonlinear time-varying systems, conventional control algorithm is difficult to achieve satisfactory steady and dynamic performance. Taking buck converter as a study object, this paper realizes an adaptive controller for DC-DC converter by online estimating the input equivalent disturbance caused by its inaccurate parameters by use of strong tracking filter, and by correcting control variables of generalized generic model control to compensate effects of time-varying parameters and unknown disturbance. Simulation results testify this adaptive DC-DC converter has a good robustness and control performance while input voltage, reference voltage, load or other parameter changes.
Keywords :
DC-DC power convertors; adaptive control; compensation; nonlinear control systems; time-varying systems; tracking filters; variable structure systems; DC-DC converter; adaptive control; buck converter; generalized generic model control; input equivalent disturbance; time-varying parameter compensation; tracking filter; variable-structure nonlinear time-varying system; Adaptive control; Adaptive filters; Buck converters; Control systems; DC-DC power converters; Nonlinear control systems; Programmable control; Robust control; Testing; Time varying systems; Adaptive control; DC-DC converter; Input equivalent disturbance; Strong tracking filter;
Conference_Titel :
Control Conference, 2008. CCC 2008. 27th Chinese
Conference_Location :
Kunming
Print_ISBN :
978-7-900719-70-6
Electronic_ISBN :
978-7-900719-70-6
DOI :
10.1109/CHICC.2008.4605189
