Abstract
A dynamic voltage restorer (DVR) with no energy storage is studied. By using a matrix converter instead of the conventional AC/DC/AC converters, elimination of the DC-link capacitor is possible. The switching algorithm of matrix converter is the space vector modulation. There are different compensation algorithms to control the conventional DVR. These methods have been analyzed in this paper for the proposed matrix-converter-based DVR. A deep analysis through different diagrams would show the advantages or disadvantages of each compensation method. Equations for all methods are derived, and the characteristics of algorithms are compared with each other.
Highlights
Advanced industrials usually use electronic devices such as programmable logic controllers or power electronic drives in their devices
Results show that the no energy storage dynamic voltage restorer (DVR) topology with load-sideconnected converter has better advantages over other topologies
Results show that if the load is sensitive to voltage phase jump, prefault method should be used
Summary
Advanced industrials usually use electronic devices such as programmable logic controllers or power electronic drives in their devices. DVR is a kind of custom power devices that can inject active/reactive power to the grids This can protect critical loads from disturbances such as sags or swells. A flywheel-supported DVR controlled by the matrix converter is proposed in [6] Another topology is studied in [7] that the behavior of a DVR with matrix converter utilizing Alesina-Venturini modulation method is shown. Comparisons between them are done in [12] for a general type of DVR but there is less study on compensation strategies for a matrix-converter-based DVR that is the aim of this paper. All compensation methods includes prefault, in-phase, and energy-optimized compensation algorithm are analyzed and compared in this paper for the matrix-converter-based DVR.
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