Title :
Stability Judging Method for Motor Driver Fed by Voltage-type Inverter Based on Different Geometry Theory
Author_Institution :
Sch. of Electr. Eng. & Inf., Anhui Univ. of Technol., Ma´´Ansha
Abstract :
Driver system with three-phase induction motor fed by voltage-type inverter is researched on stability characteristics by the method of different geometry. On some special manifolds, this system, which is of multi-variables, nonlinear and strong coupling, can be mapped as two linear sub-systems independently. Based on the two-order system´s Lyapunov functions, the stability of driver system is analyzed and a novel method of driver system´s Lyapunov function is put forward. The function is proved as positive and its different sign can be not changed. By applied this method on Y-series induction motor made in China fed by inverter, it can meet the needs of industry driver system
Keywords :
Lyapunov methods; gradient methods; induction motor drives; invertors; linear systems; stability; AC driver system; China; Lyapunov function; geometry theory; industry driver system; linear sub-system; motor driver; stability characteristics; three-phase induction motor; two-order system; variable gradient method; voltage-type inverter; Control systems; Couplings; Geometry; Induction motors; Inverters; Lyapunov method; Modems; Nonlinear dynamical systems; Stability; Voltage; AC Driver System; Different Geometry; Lyapunov Function; Variable Gradient Method;
Conference_Titel :
Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on
Conference_Location :
Nanjing
Print_ISBN :
7-5062-7407-8
DOI :
10.1109/ICEMS.2005.202801
