Title :
Transient and dynamic performance of a linear induction motor
Author :
Lu, Changan ; Eastham, Tony R. ; Dawson, Graham E.
Author_Institution :
Dept. of Electr. Eng., Queen´´s Univ. of Kingston, Ont., Canada
Abstract :
A coupled-circuit model is used to analyze the transient and dynamic performance of a linear induction motor (LI). The behavior of a LIM during acceleration and deceleration, under fault conditions, in response to a step frequency change when it is connected to an inverter supply and under slip-frequency control is studied. The LIM parameter changes and the consequent transient behavior brought on by changes in rail top-cap conductivity and dynamic changes of the air gap are also presented. The thrust, speed, and secondary sheet currents are evaluated under various transient conditions. Computer simulation results are compared to test measurements from operational LIMs
Keywords :
digital simulation; electric machine analysis computing; electrical faults; induction motors; invertors; linear motors; machine theory; slip (asynchronous machines); acceleration; air gap; coupled-circuit model; deceleration; digital simulation; dynamic performance; fault conditions; inverter supply; linear induction motor; machine theory; rail top-cap conductivity; secondary sheet currents; slip-frequency control; speed; step frequency change; thrust; transient performance; Acceleration; Computer simulation; Conductivity; Couplings; Frequency; Induction motors; Inverters; Performance analysis; Rails; Transient analysis;
Conference_Titel :
Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-1462-X
DOI :
10.1109/IAS.1993.298934
