Title :
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
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;
Conference_Titel :
Electric Machines and Drives Conference, 2001. IEMDC 2001. IEEE International
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-7091-0
DOI :
10.1109/IEMDC.2001.939335
