Exponentially stable non-linear control for speed regulation of induction motor with field-oriented PI-controller

✍ Scribed by Hou-Tsan Lee; Jaion-Shea Chang; Li-Chen Fu

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 163 KB
• Volume: 14
• Category: Article
• ISSN: 0890-6327
• DOI: 10.1002/(sici)1099-1115(200003/05)14:2/3<297::aid-acs582>3.0.co;2-h

✦ Synopsis

On the basis of a novel dynamic model obtained under a special non-linear co-ordinate transform on a d}q-axis model (w.r.t. the stationary reference frame) of an induction motor, a simple but e!ective control law for speed regulation is proposed in this paper. This controller is designed using the concept of the "eld orientation and the property of linear PI-controller, and is shown to be robust with respect to variation of system parameters and load structure. To be rigorous, a Lyapunov theorem with a simple iterative criterion derived in this paper proves the local exponential stability of the system around any desired speed. Numerical simulations are also given to show the e!ectiveness of the presented control law.