Title :
Symmetrical GTO current source inverter for wide speed range control of 2300 to 4160 volt, 350 to 7000 hp, induction motors
Author :
Espelage, Paul M. ; Nowak, James M. ; Walker, Loren H.
Author_Institution :
GE, Salem, VA, USA
Abstract :
A line of variable-speed 2300-4160 V, 350-7000 hp induction-motor drives for either fan or constant torque load applications is described. The drives are current-sourced, consisting of one or two six-pulse thyristor phase-controlled source converters in series, a DC link reactor, a six-pulse, symmetric-GTO (gate-turn-off), load inverter, a three-phase load capacitor in parallel with the induction motor. The drive features a wide speed range of operation, high inverter efficiency, and good motor current and voltage waveshape over the speed range.<>
Keywords :
induction motors; invertors; power convertors; thyristor applications; variable speed drives; velocity control; 2300 to 4160 V; 350 to 7000 hp; DC link reactor; induction-motor drives; load capacitor; load inverter; symmetrical GTO current source invertor; thyristor phase-controlled source converters; variable speed drives; Capacitors; Induction motors; Inductors; Inverters; Thyristors; Torque; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE
Conference_Location :
Pittsburgh, PA, USA
DOI :
10.1109/IAS.1988.25079
