Doubly fed induction generator using back-to-back PWM convertersand its application to variable-speed wind-energy generation
Pena, R.
Clare, J.C.
Asher, G.M.
Dept. of Electr. & Electron. Eng., Nottingham Univ.;
This paper appears in: Electric Power Applications, IEE Proceedings -
Publication Date: May 1996
Volume: 143,
Issue: 3
On page(s): 231-241
ISSN: 1350-2352
References Cited: 21
CODEN: IEPAER
INSPEC Accession Number: 5292558
Current Version Published: 2002-08-06
Abstract
The paper describes the engineering and design of a doubly fed
induction generator (DFIG), using back-to-back PWM voltage-source
converters in the rotor circuit. A vector-control scheme for the
supply-side PWM converter results in independent control of active and
reactive power drawn the supply, while ensuring sinusoidal supply
currents. Vector control of the rotor-connected converter provides for
wide speed-range operation; the vector scheme is embedded in control
loops which enable optimal speed tracking for maximum energy capture
from the wind. An experimental rig, which represents a 7.5 kW variable
speed wind-energy generation system is described, and experimental
results are given that illustrate the excellent performance
characteristics of the system. The paper considers a grid-connected
system; a further paper will describe a stand-alone system
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