Title :
A double winding linear induction motor control scheme for PRT system
Author :
Kang, Gubae ; Gu, Bon-Gwan ; Shin, Sung-Yong ; Nam, Kwanghee ; Yoon, Seong-Hwan ; Shin, Tae-Kyung
Author_Institution :
Dept. of Electr. Eng., POSTECH Univ., Pohang, South Korea
Abstract :
To increase fault tolerance, a double winding linear induction motor (LIM) is proposed for personal rapid transit (PRT) system. In the double winding LIM, two sets of windings are wound in a single yoke, and each of them are controlled by separate inverters. Therefore, the flux continuity must be provided in the region where the two windings are overlaid. Providing flux continuity is interpreted as aligning two flux angles. If the flux angles of two LIMs are not identical, then abrupt flux change occurs in the overlaid region, causing loss and coupling between two inverter systems. To align two flux angles, we propose a flux aligning controller by exchanging angle information through RS-232 communication and analyze its performance under the disturbance. We discuss the fault-tolerant operation algorithm and compare the PRT system with the other transport systems.
Keywords :
linear induction motors; machine control; machine windings; magnetic flux; magnetic leakage; magnetic variables control; rapid transit systems; RS-232 communication; angle information exchange; double winding linear induction motor; double winding linear induction motor control; fault tolerance; fault-tolerant operation; flux angles; flux angles alignment; flux continuity; inverter systems; loss; personal rapid transit system; single yoke; Communication switching; Communication system control; Communication system traffic control; Control systems; Fault tolerant systems; Induction motors; Inverters; Performance analysis; Road vehicles; Wounds;
Conference_Titel :
IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]
Print_ISBN :
0-7803-7474-6
DOI :
10.1109/IECON.2002.1187610
