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Five-Leg Converter Topology for Wind Energy Conversion System with Doubly-Fed Induction Generator

Abstract : In this paper, application of a five-leg converter in Doubly Fed Induction Generator (DFIG) for Wind Energy Conversion Systems (WECS) is investigated. The five-leg structure and its PWM control are studied and performances are compared with the classical six-leg topology. The main drawback of five-leg converter with respect to the six-leg back-to-back converter is the need to increase the dc-link voltage for the same operation point, i.e. the same powers in case of WECS. So, different methods for the reduction of the required dc-link voltage in the five-leg case are studied. The five-leg converter is used to replace the conventional six-leg one, with the same ability. For the performance evaluation of this structure and its fully digital controller in a more realistic and experimental manner, Hardware in the Loop experiments are carried out. It is shown that efficient control of active and reactive powers and dc-link voltage is performed. Hardware in the Loop results demonstrate the high performance of the proposed fully digital control which is implemented on an Altera FPGA target.
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Submitted on : Tuesday, February 8, 2022 - 5:12:50 PM
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Mahmoud Shahbazi, Philippe Poure, Shahrokh Saadate, Mohammad Reza Zolghadri. Five-Leg Converter Topology for Wind Energy Conversion System with Doubly-Fed Induction Generator. Renewable Energy, Elsevier, 2011, 36 (11), pp.3187-3194. ⟨10.1016/j.renene.2011.03.014⟩. ⟨hal-03562208⟩



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