Modeling and Torque Analysis of a Disc Induction Motor
Yu Fan · Proceedings of the CSEE · 2010
Because the large airgap and main factors that vary with diameter,traditional analysis method results in large error in analyzing disc motor.A new disc induction motor electromagnetic model was proposed.Sub-loop calculation and airgap vector magnetic potential equation were used to improve the model accuracy.T model equivalent circuit of the model was achieved based on one-dimensional model.The influence of transverse end effect was taken account of by directly introduced into equivalent airgap length,leaving out the transverse end effect factors.Field inductance,rotor resistance and torque vary with slip ratio were analyzed.The three phase voltages,flux linkages and currents were transformed into two phase relevant equations in synchronous axis.Realized the implementation of indirect-field oriented control.A prototype machine was produced and analyzed by the proposed model,simulations and experiments were carried out.the results match well,speed regulating performance is good,which indicate that the new model is correct and effective.