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A hybrid control algorithm for voltage regulation in dc-dc boost converter

DSpace at IIT Bombay

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Title A hybrid control algorithm for voltage regulation in dc-dc boost converter
 
Creator SREEKUMAR, C
AGARWAL, V
 
Subject sliding-mode control
power converters
fuzzy controller
design
hybrid control
limit cycle
modeling
power converters
stability
state feedback
switching systems
 
Description A new switching control algorithm based on state trajectory approximation is proposed to regulate the output voltage of a representative second-order dc-dc converter-the boost converter. The essence of the proposed algorithm is to trap the system into a stable limit cycle while ensuring the required volt age regulation. Unlike some of the earlier algorithms, the concept is applicable to both continuous and discontinuous current modes of operation, making it viable over a wide operating range under various load and line disturbances. A hybrid-automaton representation of the converter is used to perform the analysis, and the control problem is simplified to a guard-selection problem. Guard conditions, governing the transition of the converter operation from one discrete state to the other in a hybrid-automation representation, are derived. The hybrid-automaton-based control system is implemented by using the state flow chart feature of MATLAB, and extensive simulations are carried out to check the suitability of the algorithm. The hybrid control law is also validated in real time by using a laboratory prototype. The experimental and simulation results prove the effectiveness of the proposed control law under varying line and load conditions.
 
Publisher IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
 
Date 2011-07-31T16:41:39Z
2011-12-26T12:53:04Z
2011-12-27T05:40:11Z
2011-07-31T16:41:39Z
2011-12-26T12:53:04Z
2011-12-27T05:40:11Z
2008
 
Type Article
 
Identifier IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 55(6), 2530-2538
0278-0046
http://dx.doi.org/10.1109/TIE.2008.918640
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8172
http://hdl.handle.net/10054/8172
 
Language en