Five-leg converter topology for wind energy conversion system with doubly fed induction generator

Shahbazi, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.renene.2011.03.014
  3. Abstract:
  4. 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 is 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
  5. Keywords:
  6. Doubly fed induction generator (DFIG) ; Five-leg converter ; Hardware in the loop (HIL) ; Wind energy conversion system (WECS) ; Active and reactive power ; Back-to-back converter ; Converter topologies ; DC-link voltages ; Digital control ; Doubly fed induction generators ; Doubly-fed induction generator ; Efficient control ; Fully digital controller ; Hard-ware-in-the-loop ; Operation point ; Performance evaluation ; PWM control ; Wind energy conversion system ; Asynchronous generators ; Digital control systems ; Electric fault currents ; Energy conversion ; Topology ; Wind power ; Electric converters ; Electricity generation ; Hardware
  7. Source: Renewable Energy ; Volume 36, Issue 11 , 2011 , Pages 3187-3194 ; 09601481 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0960148111001285