Voltage and frequency control of self-excited slip-ring induction generators

Author

Chan, T.F. ; Nigim, Khalid ; Lai, L.L.

Author_Institution

Dept. of Electr. Eng., Hong Kong Polytech., Kowloon, China

fYear

2001

fDate

2001

Firstpage

410

Lastpage

414

Abstract

By varying the effective rotor resistance of a self-excited slip-ring induction generator (SESRIG), both the magnitude and frequency of the output voltage can be controlled over a wide speed range. A steady-state analysis based on a normalized equivalent circuit yields the control characteristics. Experiments performed on a 1.8 kW laboratory machine confirm the feasibility of the method of control. Practical implementation of a control scheme for an SESRIG using chopper-controlled rotor resistance is also presented

Keywords

asynchronous generators; choppers (circuits); electric resistance; equivalent circuits; frequency control; machine control; rotors; voltage control; 1.8 kW; chopper-controlled rotor resistance; control characteristics; frequency control; normalized equivalent circuit; output voltage frequency control; output voltage magnitude control; rotor resistance variation; self-excited slip-ring induction generators; steady-state analysis; voltage control; Admittance; Capacitance; Electric resistance; Equivalent circuits; Frequency control; Impedance; Induction generators; Rotors; Stator cores; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Machines and Drives Conference, 2001. IEMDC 2001. IEEE International

Conference_Location

Cambridge, MA

Print_ISBN

0-7803-7091-0

Type

conf

DOI

10.1109/IEMDC.2001.939335

Filename

939335