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This paper proposed the new control method of the sensorless dual parallel Induction motor drive system which can maintained the steady speed under unbalanced load condition. This method uses new modified observer design technique for mono inverter dual drive system of same parameters and ratings connected in parallel. The simulation work has been reported for different step changes in speed for balanced...
This paper, deals with a new input-output sliding mode linearization control for induction motor combined with field oriented control (FOC). To control the speed and rotor flux modulus, we develop two loops. The first one, inner loop, allows to linearize the system by a choose of closed loop poles to achieve a good linearization. The choice of a particular sliding surface permits to create a link...
In this paper two methods of torque control for induction motor have been investigated. First DTC method is implemented by using PI regulators and three-level inverter. Then an improved predictive torque control is developed and performed with two-level inverter. In the proposed predictive control the next torque and flux are predicted by discrete model of motor and inverter. Afterward the feasible...
This Paper presents a Particle Swarm Optimization (PSO) method to determine the optimal proportional-integral (PI) or proportional-integral derivative (PID) controller parameters, for speed control of a Field Oriented Control (FOC) induction motor. The FOC induction motor has been modeled in MATLAB (Simulink) and the PSO algorithm has been programmed and implemented in MATLAB. Comparing with traditional...
This paper presents a Genetic Algorithm (GA) based fast speed response controller for poly-phase induction motor drive. Here the proportional and integral gains of PI controller are optimized by GA to achieve quick speed response. An adaptive Recurrent Neural Network (RNN) with Real Time Recurrent Learning (RTRL) algorithm is proposed to estimate rotor flux. An online tuning scheme to update the weight...
The role of proportional-integral (PI) controller as a speed controller for a induction Motor (IM) in high performance drive system is still vital although new control techniques such as direct torque control that is more effective -but complex- is available. However, PI controller is slow in adapting to speed changes, load disturbances and parameters variations without continuous tuning of its gains...
Present work shows the merits of space vector modulation direct torque control(SVM-DTC) over the conventional direct torque control(conventional DTC). SVM-DTC technique is helpful in solving the basic issues of torque ripple and variable swithing frequency present in the conventional DTC. In order to get the reference voltage vector which is necessary for the SVM-DTC, this paper describes a method...
The dynamics of the induction motor drive can be made independent of the position as well as speed control by using the field oriented control strategies. There are various techniques available under this category. One of such strategies is Indirect Field-Oriented Control method for the Induction motor drive. The speed control is observed in both, open-loop and closed-loop control applications. The...
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...
In the following paper, we propose a new input-output sliding mode linearization control for induction motor combined with field oriented control (FOC). We develop two loops to control the speed and rotor flux modulus. The first one, inner loop, allows to linearize the system by a choose of closed loop poles to achieve a good linearization. The choice of a particular sliding surface permits to create...
The design and implementation of an adaptive neural network based proportional-integral controller (NNPIC) were carried out on the direct torque control (DTC) system. The proposed controller consists of neural network and projection algorithm, in order to tune its parameters adaptively online under environmental variations. The experimental results proved that the performance of the proposed controller...
A novel direct torque control strategy, using genetic algorithm on-line to optimize the fuzzy PI controller, is proposed. In this approach, according to speed error and its first time derivative, the proportional coefficient Kp and integral coefficient Ki can be on-line adjusted by fuzzy adaptive PI speed regulation, and the fuzzy logic adapter parameters are optimized by genetic algorithm to improve...
The purpose of this paper is to describe a new method for modulated hysteresis direct torque control algorithm for induction motor (IM) to minimize torque ripple and to obtain a constant switching frequency. The design methodology is based on space vector modulation of electrical machines with digital vector control. MATLAB simulations supported with experimental study under C++ are used. -The simulation...
This paper presents simulation studies on the optimal energy control of an inverter-fed three-phase induction motor (1 hp). An overview of various controllers: loss model controller, search controller and their hybridization are given. Induction motor parameter variations due to temperature rise and core saturation are considered when loss models are derived. Mine hoist drive of a mineral industry...
In the paper, a new approach to direct torque control (DTC) of induction motor drive based on dual-fuzzy space vector modulation (SVM) technology is proposed. In comparison with the conventional direct torque control using space vector modulation technology (SVM-DTC) method, two fuzzy controllers are used to generate the two components of reference voltage vector instead of two PI controllers. With...
In view of the dependence on non-linear parameters of induction motor leading to poor decoupling in conventional vector control, the current control strategy of TSMC fed induction motor using complex vectors is proposed. And mathematic models using complex vectors on TSMC and induction motor are derived and simplified. Then the use of complex vectors root locus figures out complex PI current regulator...
The main result presented in this paper is the implementation of optimal control based on quadratic criteria into a low power electric drive with three-phase induction motor. The dSPACE 1104 controller has been used in order to obtain the on-line optimal solution of matrix Riccati differential equation (MRDE). Based on the optimal solution and on corresponding feedback signals, the optimal speed reference...
Present work shows the merits of space vector modulation direct torque control (SVPWM DTC) over the conventional direct torque control (conventional DTC). SVPWM DTC technique is helpful in solving the basic issues of torque ripple and variable switching frequency present in the conventional DTC. Three PI controllers one each for speed, torque and flux feedback loops is used in SVPWM DTC based IM drive...
A integrated torque control method of dual induction motors independent drive for tracked vehicle is studied. The induction mathematics model is made up, a torque voltage PI (proportional integral) controller of induction motor is designed, and a induction motor torque control strategy based on rotor flux oriented is proposed. A dual induction motors drive scheme for tracked vehicle is constructed,...
This paper describes an analysis method for achieving control torque and speed with vector control for induction motors. An indirect field-oriented output feedback motor controller is presented; it is suitable for low-cost applications. A current model control is used to sense back electromotive force (back-EMF) by means of an analog to digital converter (ADC); its simulation and filtering are discussed...
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