Title :
Verification of enhanced dynamic torque per ampere capability in saturated induction machines
Author :
Wallace, Ian T. ; Novotny, Donald W. ; Lorenz, Robert D. ; Divan, Deepakraj M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Abstract :
An easily implemented technique for dynamic torque per ampere enhancement under high levels of motor saturation is described and validated via substantial experimental results presented in this paper. A saturation model assuming only d-axis saturation is utilized in field oriented control of the experimental system and the results are compared to theoretical predictions based on the same saturation model. In order to help users optimize this technique, the paper discusses motor selection issues for the production of this dynamic torque enhancement. An experimental illustration of the use of the torque enhancement principle to break away a load with high static friction is presented to demonstrate the practical application of the concept. Measurement methods used to evaluate the dynamic properties of the electromagnetic torque are presented in sufficient detail that users have appropriate tools for performing such work
Keywords :
induction motors; machine control; machine testing; machine theory; magnetic flux; optimal control; optimisation; torque control; d-axis saturation; dynamic properties; dynamic torque enhancement; dynamic torque per ampere capability; electromagnetic torque; field oriented control; load; measurement methods; motor saturation model; optimisation; saturated induction machines; selection issues; static friction; Electric machines; Electromagnetic measurements; Induction machines; Induction motors; Industry Applications Society; Inverters; Predictive models; Steady-state; Switches; Torque measurement;
Journal_Title :
Industry Applications, IEEE Transactions on