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Maximum Power Point Tracking of DFIG with DC-Based Converter System Using Coordinated Feedback Linearization Control

Author

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  • Yuliang Sun
  • Shaomin Yan
  • Bin Cai
  • Yuqiang Wu

Abstract

This paper presents a coordinated feedback linearization strategy (CFLS) for DC-based doubly-fed induction generator (DFIG) system to track the maximum power point. The stator and rotor of DFIG are connected to DC grid directly by two voltage source converters. Compared with a traditional DFIG system, the DC-based DFIG system has more system inputs and coupling, which increases the difficulty of vector control strategy. Accordingly, CFLS is proposed to make DFIG operate at the maximum power point (MPP), and two aspects are improved: first a single-loop control is adopted to make DFIG operate steady and accurate under coordinated the control of RSC and SSC. Second system control laws are obtained by the feedback linearization strategy that achieves DC-based DFIG system decoupling fully during the MPPT and system control. Simulations are carried out the comparison between CFLS and conventional vector control (VC), and it shows that the control performance of CFLS is superior.

Suggested Citation

  • Yuliang Sun & Shaomin Yan & Bin Cai & Yuqiang Wu, 2018. "Maximum Power Point Tracking of DFIG with DC-Based Converter System Using Coordinated Feedback Linearization Control," Mathematical Problems in Engineering, Hindawi, vol. 2018, pages 1-12, November.
    • Handle: RePEc:hin:jnlmpe:9642123
    DOI: 10.1155/2018/9642123
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