Replacing the Grid Interface Transformer in Wind Energy Conversion System with Solid-State Transformer

Imran Syed, Vinod Khadkikar

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

Abstract

In wind energy conversion systems, the fundamental frequency step-up transformer acts as a key interface between the wind turbine and the grid. Recently, there have been efforts to replace this transformer by an advanced power-electronics-based solid-state transformer (SST). This paper proposes a configuration that combines the doubly fed induction generator-based wind turbine and SST operation. The main objective of the proposed configuration is to interface the turbine with the grid while providing enhanced operation and performance. In this paper, SST controls the active power to/from the rotor side converter, thus, eliminating the grid side converter. The proposed system meets the recent grid code requirements of wind turbine operation under fault conditions. Additionally, it has the ability to supply reactive power to the grid when the wind generation is not up to its rated value. A detailed simulation study is conducted to validate the performance of the proposed configuration.

Original languageBritish English
Article number7580593
Pages (from-to)2152-2160
Number of pages9
JournalIEEE Transactions on Power Systems
Volume32
Issue number3
DOIs
StatePublished - May 2017

Keywords

  • Doubly fed induction generator
  • fault ride through
  • power electronic transformer
  • solid-state transformer

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