DocumentCode :
2378005
Title :
Variable speed field-oriented controlled induction generator
Author :
Leidhold, Roberto ; Garcia, Guillermo
Author_Institution :
Univ. Nacional de Rio Cuarto, Argentina
Volume :
1
fYear :
1998
fDate :
12-15 Oct. 1998
Firstpage :
540
Abstract :
In this work, a new induction generator system (IG), to work with variable speed and load, is proposed. The objective is to make it work as a stand alone (not grid connected) generator to produce constant voltage and variable frequency AC current. The IG is based on a three-phase induction machine (IM) exited, simultaneously, by a capacitor bank and a field-oriented controlled inverter. The inverter manipulates the IG excitation currents to control the generated voltage. The capacitor bank is used to minimize the inverter current and to filter voltage harmonics. A laboratory set up was mounted to experimentally validate the proposal. This prototype is based on a 4 kW conventional squirrel cage IM. The inverter uses IGBTs and the controller was implemented using a conventional PC and adequate interfaces. Experimental results are presented to validate the proposed strategy. This system can be used in variable-speed micro wind or hydro power plants where the prime mover operates within a variable speed range to obtain a better efficiency.
Keywords :
DC-AC power convertors; asynchronous generators; control system synthesis; exciters; insulated gate bipolar transistors; invertors; machine testing; machine theory; machine vector control; power bipolar transistors; variable speed gear; velocity control; 4 kW; IGBT inverter; capacitor bank; control design; control performance; excitation currents; field-oriented control; micro hydro power plants; micro wind power plants; prime mover; stand-alone generator; three-phase induction machine excitation; variable speed induction generator; variable speed range operation; voltage harmonics filtering; AC generators; Capacitors; Frequency; Induction generators; Induction machines; Inverters; Laboratories; Mesh generation; Power harmonic filters; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industry Applications Conference, 1998. Thirty-Third IAS Annual Meeting. The 1998 IEEE
Conference_Location :
St. Louis, MO, USA
ISSN :
0197-2618
Print_ISBN :
0-7803-4943-1
Type :
conf
DOI :
10.1109/IAS.1998.732367
Filename :
732367
Link To Document :
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