Doubly-fed induction machine in wind power generation

Hector A. Pulgar-Painemal, Peter W Sauer

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

Abstract

This paper presents the steady-state model of a variable-speed wind power machine based on a doubly-fed induction generator (DFIG). Using a fifth order dynamic model of an induction machine, a modified equivalent circuit is derived. It uses the synchronously rotating reference frame in which the q-axis leads the d-axis by ninety degrees. In addition, the relationships between power and rotor-voltages are studied. A strong coupling in the q-axis rotor voltage and active power as well as the d-axis rotor voltage and reactive power is observed. These couplings are analyzed and the ability of the DFIG to produce reactive power is studied. Finally, the power capability characteristic of the machine is described which shows similarities to the capability curve of conventional synchronous generators. Considering the maximum rotor current, the boundary of a safe operation is best described by an elliptical region in the complex power plane. In addition, considering the limits of maximum rotor voltage, stator current and maximum active power the well-known D-curve or capability chart is obtained.

Original languageEnglish (US)
Title of host publicationElectrical Manufacturing Technical Conference 2009
Subtitle of host publicationElectrical Manufacturing and Coil Winding Expo
Pages123-130
Number of pages8
StatePublished - Dec 1 2009
EventElectrical Manufacturing Technical Conference 2009: Electrical Manufacturing and Coil Winding Expo, EMCWA 2009 - Nashville, TN, United States
Duration: Sep 29 2009Oct 1 2009

Publication series

NameElectrical Manufacturing Technical Conference 2009: Electrical Manufacturing and Coil Winding Expo

Other

OtherElectrical Manufacturing Technical Conference 2009: Electrical Manufacturing and Coil Winding Expo, EMCWA 2009
CountryUnited States
CityNashville, TN
Period9/29/0910/1/09

Keywords

  • Capability curve
  • Power systems
  • Steady-State model
  • Wind power modeling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Pulgar-Painemal, H. A., & Sauer, P. W. (2009). Doubly-fed induction machine in wind power generation. In Electrical Manufacturing Technical Conference 2009: Electrical Manufacturing and Coil Winding Expo (pp. 123-130). (Electrical Manufacturing Technical Conference 2009: Electrical Manufacturing and Coil Winding Expo).