Variable gain adaptive controller based on sensitivity method for DC-DC boost converter

Author

Bagherzadeh, Mohammad Ali ; Moghadas, Hamid ; Ghaisari, Jafar ; Bakhshai, Alireza

Author_Institution

Dept. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan, Iran

fYear

2014

fDate

20-22 May 2014

Firstpage

787

Lastpage

792

Abstract

Adaptive controllers are developed to control systems with uncertainties. DC-DC converters are widely used to provide regulated DC voltages. Due to changes in the output load demand and also the input voltage variations, DC-DC converters are subjected to some uncertainties. In this paper, an adaptive controller based on sensitivity method is applied to a boost converter. In addition, a variable adaptive gain corresponding to the output voltage error is proposed to improve the control system performance. Simulation results show that both proposed controllers demonstrate acceptable regulation in presence of the output load changes and the input voltage variations. However, the proposed variable gain method is more effective compared to the fixed one.

Keywords

DC-DC power convertors; adaptive control; uncertain systems; voltage control; DC voltage; DC-DC boost converter; input voltage variation; output load demand; sensitivity method; variable gain adaptive controller; Adaptation models; DC-DC power converters; Gain; Sensitivity; Switches; Voltage control; Adaptive Control; DC-DC Converter; Sensitivity Method; Switching Signal; Voltage Regulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering (ICEE), 2014 22nd Iranian Conference on

Conference_Location

Tehran

Type

conf

DOI

10.1109/IranianCEE.2014.6999643

Filename

6999643