期刊
IEEE TRANSACTIONS ON ENERGY CONVERSION
卷 28, 期 3, 页码 690-697出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TEC.2013.2260752
关键词
Energy storage systems (ESS); experimental setup; microgrids; nonlinear control; power electronics; sliding mode control; supercapacitors
资金
- CONICET [PIP 00361 2012/14]
- UNLP [11/I164 2012/15]
- EIT
- KIC-InnoEnergy under Project KIC-SMART POWER [31_2011_IP27_Smart Power]
- European Regional Development Funds (ERDF, FEDER Programa Competitivitat de Catalunya)
The proper operation of a microgrid requires storage devices that increase the inertia and avoid instability of the system. This paper presents the control of an energy storage system (ESS) based on supercapacitors in the context of grid-connected microgrids. The ESS is composed of ac/dc and dc/dc converters tied by a dc link. A single sliding mode strategy is proposed to control a bidirectional dc/dc converter, capable of working properly under all operating conditions. The switching devices are commanded by a single sliding function, dynamically shaped by references sent from the microgrid central controller. This feature facilitates the implementation and design of the control law and simplifies the stability analysis over the entire operating range. The effectiveness of the proposed control strategy is illustrated by experimental results.
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