Combined Discrete-time Sliding Mode and Disturbance Observer for Current Control of Induction Motors

被引：10

作者：

Vieira R.P. ^{[1
]}

Gabbi T.S. ^{[1
]}

Gründling H.A. ^{[1
]}

机构：

[1] Power Electronics and Control Research Group - GEPOC, Federal University of Santa Maria - UFSM, Santa Maria

来源：

Journal of Control, Automation and Electrical Systems | 2017年 / 28卷 / 3期

关键词：

Decoupling; Disturbance observer; Induction motor; Sliding mode control;

D O I：

10.1007/s40313-017-0307-1

中图分类号：

学科分类号：

摘要：

This paper proposes a composite control strategy which combines a discrete-time sliding mode controller with a disturbance observer aiming to decouple current control of vector oriented induction motor drives. The stator current control is carried out through an indirect field orientation in a dq reference frame rotating at synchronous speed. The cross-coupling variables of the induction motor stator currents at synchronous reference frame are modeled as disturbances, and these values are estimated using a discrete-time disturbance observer. The digital implementation delay was included in the plant model formulation, resulting in a control law suitable to direct implementation in microcontrollers and digital signal processors. Then, the nominal and decoupled part of the induction machine model is used for the design of the sliding mode controller, and the additional variables are modeled as disturbances. The cross-coupling variables are observed and used in the control law. The convergence analysis is presented in discrete-time domain. Simulation and experimental results are presented to validate the theoretical analysis, and they show the good performance of the proposed method. © 2017, Brazilian Society for Automatics--SBA.

引用

页码：380 / 388

页数：8

共 28 条

[11]

Gonzalez T., Moreno J., Fridman L., Variable gain super-twisting sliding mode control, IEEE Transactions on Automatic Control, 57, 8, pp. 2100-2105, (2012)

[12]

Holmes D., Lipo T., McGrath B., Kong W., Optimized design of stationary frame three phase ac current regulators, IEEE Transactions on Power Electronics, 24, 11, pp. 2417-2426, (2009)

[13]

Holmes D., McGrath B., Parker S., Current regulation strategies for vector-controlled induction motor drives, IEEE Transactions on Industrial Electronics, 59, 10, pp. 3680-3689, (2012)

[14]

Holtz J., Sensorless control of induction motor drives, Proceedings of the IEEE, 90, 8, pp. 1359-1394, (2002)

[15]

Holtz J., Sensorless control of induction machines: With or without signal injection?, IEEE Transactions on Industrial Electronics, 53, 1, pp. 7-30, (2005)

[16]

Kommuri S., Rath J., Veluvolu K., Defoort M., Soh Y.C., Decoupled current control and sensor fault detection with second-order sliding mode for induction motor, IET Control Theory Applications, 9, 4, pp. 608-617, (2015)

[17]

Krause P.C., Wasynczuk O., Sudhoff S.D., Analysis of electric machinery, (1995)

[18]

Niu Y., Ho D., Wang Z., Improved sliding mode control for discrete-time systems via reaching law, IET Control Theory Applications, 4, 11, pp. 2245-2251, (2010)

[19]

Qu S., Xia X., Zhang J., Dynamics of discrete-time sliding-mode-control uncertain systems with a disturbance compensator, IEEE Transactions on Industrial Electronics, 61, 7, pp. 3502-3510, (2014)

[20]

Sabanovic A., Fridman L.M., Spurgeon S., Variable structure systems: From principles to implementation (1st ed.), The Institution of Engineering and Technology, (2004)

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