A simplified speed controller for direct torque neuro fuzzy controlled induction machine drive based on a variable gain PI controller

This paper presents an original variable gain PI (VGPI) controller for speed control of a simplified direct torque neuro fuzzy controlled (DTNFC) induction motor drive. First, a simplified direct torque neuro fuzzy control (DTNFC) for a voltage source PWM inverter fed induction motor drive is presented. This control scheme uses the stator flux amplitude and the electromagnetic torque errors through an adaptive NF inference system (ANFIS) to generate a voltage space vector (reference voltage) which is used by a space vector modulator to generate the inverter switching states. In this paper a four rules ANFIS structure is proposed. This structure generates the desired reference voltage by acting on both the amplitude and the angle of its components. Then a VGPI controller is designed in order to be used as the speed controller in the simplified DTNFC induction motor drive. Simulation of the simplified DTNFC induction motor drive using VGPI for speed control shows promising results. The motor reaches the reference speed rapidly and without overshoot, load disturbances are rapidly rejected and the detuning problem caused by the stator resistance variation is fairly well dealt with.

[1]  Syed Nasar,et al.  Torque Vector Control (TVC)-A Class of Fast and Robust Torque-Speed and Position Digital Controllers for Electric Drives , 1988 .

[2]  Jyh-Shing Roger Jang,et al.  Self-learning fuzzy controllers based on temporal backpropagation , 1992, IEEE Trans. Neural Networks.

[3]  Pasi Pohjalainen,et al.  The Next Generation Motor Control Method: Direct Torque Control (DTC) , 1995 .

[4]  Jyh-Shing Roger Jang,et al.  ANFIS: adaptive-network-based fuzzy inference system , 1993, IEEE Trans. Syst. Man Cybern..

[5]  Azeddine Draou,et al.  A Variable Gain PI Controller Used for Speed Control of a Direct Torque Neuro Fuzzy Controlled Induction Machine Drive , 2007 .

[6]  M. Depenbrock,et al.  Direct self-control (DSC) of inverter-fed induction machine , 1988 .

[7]  M. P. Kazmierkowski,et al.  Improved direct torque and flux vector control of PWM inverter-fed induction motor drives , 1995, IEEE Trans. Ind. Electron..

[8]  Toshihiko Noguchi,et al.  A New Quick-Response and High-Efficiency Control Strategy of an Induction Motor , 1986, IEEE Transactions on Industry Applications.

[9]  Domenico Casadei,et al.  Study and implementation of a simplified and efficient digital vector controller for induction motors , 1993 .

[10]  Henryk Tunia,et al.  Automatic control of converter-fed drives , 1994 .

[11]  Peter Vas,et al.  Sensorless vector and direct torque control , 1998 .

[12]  Chuen-Tsai Sun,et al.  Neuro-fuzzy modeling and control , 1995, Proc. IEEE.

[13]  L.M. Tolbert,et al.  Direct torque control of induction machines using space vector modulation , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

[14]  P. Tiitinen,et al.  The next generation motor control method, DTC direct torque control , 1996, Proceedings of International Conference on Power Electronics, Drives and Energy Systems for Industrial Growth.

[15]  J.N. Nash.  Direct torque control, induction motor vector control without an encoder , 1996, Conference Record of 1996 Annual Pulp and Paper Industry Technical Conference.

[16]  A. Draou,et al.  Simulation and modelling of a variable gain PI controller for speed control of a direct torque neuro fuzzy controlled induction machine drive , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[17]  Domenico Casadei,et al.  Implementation of a direct control algorithm for induction motors based on discrete space vector modulation , 2000 .

[18]  A. Draou,et al.  Variable gain PI controller design for speed control and rotor resistance estimation of an indirect vector controlled induction machine drive , 2002, IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02.

[19]  Alfonso Damiano,et al.  Comparison of Speed Sensorless DTC Induction Motor Drives , 1997 .

[20]  Frede Blaabjerg,et al.  A simple direct-torque neuro-fuzzy control of PWM-inverter-fed induction motor drive , 2000, IEEE Trans. Ind. Electron..