Abstract
In this paper, the problem of robust stability and tracking of saturated control systems for buck DC-DC converters is considered. Linear Matrix Inequalities (LMIs) are used to insert the constraints in the design phase while imposing positivity in the closed-loop state. The control objective is to design a control law for the converter that limit duty ratio between 0 and 1. This will allow the system to switch between two topologies in the continuous conduction mode (CCM), to achieve a tracking reference condition. This has been developed using uncertain saturated control and regional pole placement techniques. The proposed controller is applied to a real DC-DC buck converter through a Hardware-In-the-Loop (HIL) test system. Experimental and simulation results show the effectiveness and the success of the proposed controller in tracking a reference voltage with limiting the duty ratio between 0 and 1. Results also show that the proposed controller performed better than the conventional one.
Original language | English |
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Pages (from-to) | 1041-1052 |
Number of pages | 12 |
Journal | Transactions of the Institute of Measurement and Control |
Volume | 38 |
Issue number | 9 |
DOIs | |
Publication status | Published - Sept 1 2016 |
Keywords
- Buck converter
- HIL simulation
- LMI
- pole placement
- saturated systems
- uncertain systems
ASJC Scopus subject areas
- Instrumentation