Title :
Flux tracking in induction machines by means of volt-amp quantities
Author :
Dalton, Peter ; Gosbell, Victor
Author_Institution :
Dept. of Electr. Eng., Sydney Univ., NSW, Australia
Abstract :
It is demonstrated that an instantaneous quantity related to average reactive power can be defined for machines with three-phase sinusoidally distributed windings. Expressions for the flow of this quantity into the stator of an induction machine are obtained and interpreted in terms of the behavior of flux distributions within the machine. The results are used to devise an algorithm for tracking the rotor flux inside and induction machine without dependence on stator or rotor resistance and without need for motor modifications. Applications of this algorithm to a field-oriented control system utilizing a voltage-sourced current-controlled inverter is investigated. Computer simulations are presented to support the theoretical results.<>
Keywords :
asynchronous machines; digital simulation; invertors; machine windings; power engineering computing; computer simulations; field-oriented control system; flux tracking; induction machines; stator; three-phase sinusoidally distributed windings; voltage-sourced current-controlled inverter; Application software; Control systems; Induction machines; Induction motors; Inverters; Machine windings; Reactive power; Rotors; Stators; Voltage control;
Conference_Titel :
Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE
Conference_Location :
Pittsburgh, PA, USA
DOI :
10.1109/IAS.1988.25066
