Sliding Mode-Based Observer Design for Field-Oriented Control of Induction Machine Drive for Applications in Hybrid Electric Vehicles
The feedback (direct) field-oriented (vector) control is the most commonly adopted instantaneous speed/torque control method for the hybrid electric vehicles drive system.The feedback (direct) field-oriented (vector) control of induction machines primarily depends upon precise flux estimation.However,an accurate estimation of flux is hard due to the deviations in the machines electrical parameters.Both the resistances (stator and rotor),which produces the imprecision in the flux estimation and in the generation of unit vectors,increase linearly with temperature,depending upon the temperature co-efficient of the resistance of the material.The unit vectors are used to guarantee correct alignment of stator direct-axis current with the flux vector and stator quadrature-axis current perpendicular to it.This provides the decoupled control as in separately-excited DC machines.Secondly,unit vectors are used for the purpose of control.Therefore,the imprecision of the estimated flux will degrade the performance of speed control.In this paper,a sliding mode based observer is presented subject to machines electrical parameters variations.The mathematics and derivations of the proposed sliding mode observer is expressed.The performance and stability of the proposed observer is then worked out through the regulation problem of the 3-φ induction machine used for the implementation of field-oriented control for the application in hybrid electric vehicle.The results of the proposed observer shows the good performance in estimating the actual ux which is necessary for the accurate and exact performance of field-oriented control in hybrid electric vehicles.The proposed observer is also robust against the variations in rotor and stator resistance.
Field-oriented control Hybrid electric vehicles Induction machine Rotor flux and Sliding mode based observer
Athar Hanif Aamer Iqbal Bhatti Abdul Rehman Yassin Ghulam Murtaza Qadeer Ahmed
Department of Electrical Engineering,The University of Lahore,Lahore 54600,I. R. Pakistan Department of Electronic Engineering,Muhammad Ali Jinnah University,Control and Signal Processing Re Cenetr for Automotive Research(CAR),The Ohio State University,Ohio 43210,America
国际会议
The 33th Chinese Control Conference第33届中国控制会议
南京
英文
263-268
2014-07-28（万方平台首次上网日期，不代表论文的发表时间）