Experimental study on doubly-fed rotary frequency converter

Yasutoshi Takemoto*, Goro Fujita, Ryuichi Yokoyama, Kaoru Koyanagi, Toshihisa Funabashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Wind power generation using an unlimited, natural energy is getting an attention regarding environment issues in recent years, and the installed capacity of wind power generation system is increasing at a rapid pace, resulting in deterioration of power quality especially in frequency and voltage. This fact will be a big problem to restrict large capacity of wind farm. This paper proposes a new frequency converter: rotary frequency converter (RFC) to moderate the electric output from wind generation, which is to be installed between a set of wind generators and a grid, providing a smoothed electric output, promoting the wind power generation introduction. This mainly consists of a synchronous machine and the adjustable-speed machine. Independent controls of input/output voltage, active power, and reactive power offer electrical separation between the two networks. Experimental study of prototype model and its characteristics, especially dynamic control is discussed in this paper.

Original languageEnglish
JournalIEEJ Transactions on Power and Energy
Issue number6
Publication statusPublished - 2008


  • Frequency variation
  • Power system interconnection
  • Power transfer
  • Wind farm
  • Wind generation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology


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