An improved model of a three phase induction motor incorporating the parameter variations
Treść / Zawartość
A great deal of work is being done on the betterment of control through simulation of the electric drives used for various high-power purposes. The authenticity of the simulated results is based on the accurate modeling of the various parts of the electric drive system. Three–phase Induction motors form an extremely important part of the modern day electric drive system and their usage is continuously on a rise owing to their inherent properties of ruggedness, minimum maintenance requirements and continually increasing efficiencies. Usually the three-phase Induction motor model used in various research works does not incorporate stator and rotor core losses, stator and rotor stray load losses and magnetizing saturation and rotor conductor skin effects. The present paper aims at developing a threephase Induction motor model taking the above losses and effects into account. The dynamic linking of the model to a thermal model considering the temperature dependent resistive elements is an added feature. The motor model described in this paper is the extension of the conventional 2-phase lumped-parameter induction motor model. The biggest advantage is that the model is user-programmable in MA TLAB environment and can be used for system level transient studies. The simulation results of the developed model, with various parameter variations taken into account and subjected to sudden changes in load, show better torque and speed performances of the motor both in steady state and dynamic conditions.
Bibliogr. 6 poz., rys.
- 1. Jansen P.L., Liao Y., Zhao Y.,Law J.: Detailed Transient Electrical Model for Polyphase Induction Machines. Report, 1997.
- 2. Krishnan R.: Electric Motor Drives: Modeling, Analysis and Control. Prentice Hall, 2007.
- 3. He Y.-K., Lipo T.A.: Computer Simulation of an Induction Machine with Spatially Dependent Saturation. IEEE-PAS Trans., Vol. PAS-103, No. 4, April 1984, pp. 707–714.
- 3. Cochran P.L.: Polyphase Induction Motors — Analysis, Design, and Application. Marcel Dekker, Inc., 1989.
- 4. Udayagiri M.R., Lipo T.A. : Simulation of Inverter Fed Induction Motors Including Core Losses. Proc. IEEE Industrial Electronics Conference, Sept. 1989, pp. 232–237.
- 5. Murphy J.M.D., Honsinger V.B.: Efficiency Optimization of Inverter-Fed Induction Motor Drives. Proc. IEEE-IAS Annual Meeting, 1982, pp. 544–552.
- 6. Krause Paul C.: Analysis of Electric Machinery and Drive Systems. IEEE Press, Willy Interscience, 2004.