4.7 Article

FPGA-based reconfigurable control for switch fault tolerant operation of WECS with DFIG without redundancy

期刊

RENEWABLE ENERGY
卷 55, 期 -, 页码 35-48

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2012.11.027

关键词

Wind energy; DFIG; Fault tolerant converters; Reconfigurable back-to-back converter; FPGA; Switch failure

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This paper deals with reconfigurable back-to-back converter topology and control orders in Wind Energy Conversion Systems (WECS). A typical WECS with Doubly Fed Induction Generator (DFIG) in balanced conditions is concerned. Based on the classical topology, a fault tolerant converter without any redundancy has been studied. The presented fault tolerant topology allows a five-leg structure with converters reconfiguration after switch failure detection. Furthermore, the control strategy for classical topology can no longer be applied after fault occurrence. Thus, a five-leg control strategy has also been proposed. The validation of the reconfigurable digital controller for the studied WECS with DFIG topology has been performed using a Hardware-in-the-Loop (HIL) reconfigurable platform including a Field Programmable Gate Array (FPGA) chip. HIL simulation results in both healthy and fault conditions have been presented to show simultaneously the viability of the studied converters topology and the reconfigurable control. (C) 2012 Elsevier Ltd. All rights reserved.

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