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Energies 2018, 11(3), 474; https://doi.org/10.3390/en11030474

A Voltage and Frequency Control Strategy for Stand-Alone Full Converter Wind Energy Conversion Systems

Electrical Engineering Department, Carlos III University of Madrid, Av. de la Universidad 30, Leganés, 28911 Madrid, Spain
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Received: 26 January 2018 / Revised: 15 February 2018 / Accepted: 20 February 2018 / Published: 25 February 2018
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

This paper addresses the design and analysis of a voltage and frequency control (VFC) strategy for full converter (FC)-based wind energy conversion systems (WECSs) and its applicability for the supply of an isolated load. When supplying an isolated load, the role of the back-to-back converters in the FC must change with respect to a grid-connected application. Voltage and frequency are established by the FC line side converter (LSC), while the generator side converter (GSC) is responsible for maintaining constant voltage in the DC link. Thus, the roles of the converters in the WECS are inverted. Under such control strategies, the LSC will automatically supply the load power and hence, in order to maintain a stable operation of the WECS, the wind turbine (WT) power must also be controlled in a load-following strategy. The proposed VFC is fully modelled and a stability analysis is performed. Then, the operation of the WECS under the proposed VFC is simulated and tested on a real-time test bench, demonstrating the performance of the VFC for the isolated operation of the WECS. View Full-Text
Keywords: wind energy; frequency regulation; permanent magnet synchronous generators (PMSGs); full converter (FC); voltage-sourced converter; isolated operation wind energy; frequency regulation; permanent magnet synchronous generators (PMSGs); full converter (FC); voltage-sourced converter; isolated operation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Peña Asensio, A.; Arnaltes Gómez, S.; Rodriguez-Amenedo, J.L.; García Plaza, M.; Eloy-García Carrasco, J.; Alonso-Martínez de las Morenas, J.M. A Voltage and Frequency Control Strategy for Stand-Alone Full Converter Wind Energy Conversion Systems. Energies 2018, 11, 474.

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