Paper Info
Title
Nonlinear control of dc/dc power converters with inherent current and power limitation
Abstract
A nonlinear controller with an inherent current-limiting capability is presented in this paper for different types of dc/dc power converters (boost, buck-boost). The proposed controller is based on the idea of applying a dynamic virtual resistance in series with the inductor of the converter, which varies according to a nonlinear dynamical system. It is shown that the proposed approach acts independently from the converter parameters (inductance, capacitance) or the load and has a generic structure that can be used to achieve different regulation scenarios, e.g. voltage, current or power regulation. Based on the nonlinear model of the boost and the buck-boost converter, it is analytically proven that the inductor current remains always bounded below a given maximum value using input-to-state stability theory under a suitable choice of the controller parameters. Hence, the proposed control strategy offers an inherent protection property since the power of the converter is limited below a given value during transients or unrealistic power demands. Simulation results for both types of dc/dc converters are presented to verify the desired controller performance.
Year
DOI
Venue
2016
10.1109/MED.2016.7535991
Mediterranean Conference on Control and Automation
Field
DocType
ISSN
Boost converter,Control theory,Computer science,Flyback converter,Power factor,Forward converter,Electronic engineering,Ćuk converter,Control engineering,Power optimizer,Buck converter,Switched-mode power supply
Conference
2325-369X
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
George C. Konstantopoulos14210.41
Qing-Chang Zhong241754.97