Self-excited induction generator/force-commutated rectifier system operating as a DC power supply

Different Self Excitation Techniques for Slip Ring Self Excited Induction Generator

“…In order to achieve good voltage regulation under different loading conditions, the value of the excitation capacitive reactance must be varied accordingly. In the squirrel cage self excited induction generators the capacitive effect is varied by employing VAR sources which use discrete variations of leading and lagging power electronic circuitry [2]. These configurations could be employed successfully to the wound rotor machine with the rotor windings shorted at the slip rings end.…”

Performance and Analysis of a Stand-Alone DC Power Supply Using Self-Excited Induction Generator with Shunt and Series Capacitors and Diode Rectifiers

“…The industrial utilization of such systems demands an inexpensive, reliable and efficient method to improve the voltage regulation. In cases, where load requires DC voltage, the available AC supply is rectified and so far the technique to control load voltage is through delay/extinction angle control of AC/DC converters [11][12][13][14]. Performances of both phase controlled [11,12] and force commutated [13,14] converters, when connected to the self-excited induction generators, have been reported.…”

“…In cases, where load requires DC voltage, the available AC supply is rectified and so far the technique to control load voltage is through delay/extinction angle control of AC/DC converters [11][12][13][14]. Performances of both phase controlled [11,12] and force commutated [13,14] converters, when connected to the self-excited induction generators, have been reported. However, in such systems, the need to continuously sense speed, voltage and stator current to generate gate/base drive pulses through a controller for keeping output voltage constant, makes the system expensive and complicated.…”

“…In isolated systems, the terminal voltage of the generator undergoes considerable variation with the change in load and speed [4][5][6][7][8][9][10][11][12][13][14][15]. The industrial utilization of such systems demands an inexpensive, reliable and efficient method to improve the voltage regulation.…”

“…Induction generators are being used in both, grid connected [1][2][3] and stand-alone [4][5][6][7][8][9][10][11][12][13][14][15][16][17] applications. In isolated systems, the terminal voltage of the generator undergoes considerable variation with the change in load and speed [4][5][6][7][8][9][10][11][12][13][14][15].…”