Improved rotor current control of wind turbine driven doubly fed induction generators during network unbalance

Jiabing Hu, Yikang He, Hong-sheng Wang, Lie Xu

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

8 Citations (Scopus)

Abstract

This paper investigates an improved control and operation of a DFIG system under unbalanced network conditions. A new rotor current control strategy is presented, which consists of a main controller and an auxiliary compensator. The main controller is constructed in the same way as the conventional vector control design without involving sequential-component separation in order to guarantee system stability and high dynamic response. While the auxiliary controller is specially designed to control the negative sequence current taking into account the impact of the main controller on negative sequence components. Experimental results on a 1.5-kW DFIG prototype are provided and compared with those of conventional vector control and dual PI current control schemes to demonstrate the effectiveness of the proposed control strategy during steady-state and transient conditions when the network voltage is unbalanced.
Original languageEnglish
Title of host publicationInternational Conference on Sustainable Power Generation and Supply, 2009
Subtitle of host publicationSUPERGEN '09.
Number of pages7
DOIs
Publication statusPublished - Apr 2009
EventSUPERGEN '09. International Conference on Sustainable Power Generation and Supply, 2009 - Nanjing, China
Duration: 6 Apr 20097 Apr 2009

Conference

ConferenceSUPERGEN '09. International Conference on Sustainable Power Generation and Supply, 2009
CountryChina
CityNanjing
Period6/04/097/04/09

Keywords

  • asynchronous generators
  • machine vector control
  • doubly fed induction generators
  • negative sequence components

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