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This paper presents the comparison of conventional PI controller and Fuzzy controller for Induction Motor (IM) drive. The design of Fuzzy controller is carried out by fuzzy set theory in MATLAB/Simulink 2013a, using Takagi-Sugeno (T-S) fuzzy model. The simulation results for both controllers are then compared and the results revealed that T-S Fuzzy Controller perform better in terms of control delay...
A three-phase induction motor emulator based on a bidirectional six-switch bridge-type power electronic converter is demonstrated. Two current control techniques in the abc-natural reference frame based on pulse-width modulation and hysteresis current control switching techniques are used and compared. The dynamic responses of the three-phase induction motor emulator during direct on-line start-up...
An improved algorithm for MTPA (Maximum Torque Per Ampere) and Field Weakening operation which is suitable for implementation with Field Oriented Control, has been proposed for the Synchronous Reluctance motor (SynRel) for high dynamic performance. The proposed method overcomes the problem of excessive current flow into the machine while generating the d-axis and q-axis current commands independently...
Particle swarm optimization (PSO) technique has been integrated with sensorless field oriented control induction motor (FOC IM) drive system to identify its optimal parameters. The proposed PSO algorithm is run in parallel with sensorless FOC IM drive taking the stator current as input to estimate both electrical and mechanical parameters. Such parameters are stator resistance, rotor resistance, rotor...
Electrical drives are hefty tool have major contribution in most of the industrial and nonindustrial motion control applications. The electrical drive connected through a flexible shaft with a load can be modeled as a two inertia motor system. The proposed work deals with an easy-to-tune controller design strategy for two inertia motor system based on coefficient diagram method. Three speed control...
The article details the concept of creating a mathematical model of an electromechanical system that contains electric motors mounted on a viscoelastic foundation. The research of the model manifested interaction of vibrational processes in electromagnetic and mechanical energy conversion. Such processes result in shaft synchronization of electric motors operated at different rotational frequencies...
In this paper, We will be interested to the direct torque control (DTC) of an induction motor associated to the inverter (Inv-IM). This technique presents several advantages compared to other techniques such as vector control and field control. DTC permits to control directly the stator flux and the electromagnetic torque by selecting the appropriate vector voltage to be applied to the induction motor...
The induction machine is the work horse of the industry. It has rugged construction and is suitable for many high power applications. It has also been a key aspect in revolutionizing the locomotive and the automotive industries. For such automotive applications speed control becomes the driving factor. Hence in this we discuss controlling the speed of 3-phase induction motor using constant volt per...
Multi phase Induction machines are very popular because of their attractive applications and advantages in the industrial applications, electric ship propulsion and traction etc. In this paper made to Modelling and analyse the model parameters of a different high phase induction motor. Fault analysis of a machine, when the fault is occur on the stator winding of a induction machine how the parameters...
In this paper, control strategy of maximum torque per ampere (MTPA) is proposed for six-phase synchronous motor operation. The technique is simple in structure and has the straightforward goal of minimizing the stator current amplitude for a given load torque. It is shown that the resulting motor efficiency is reasonably close to optimal resulted from the minimized losses. A block diagram for the...
This paper presents the experimental implementation of V/f scalar control for a three-phase squirrel-cage induction motor. The principal goal is to control the rotation speed set by a reference and to maintain it despite the presence of disturbances. Two implementation methods were developed: Open-loop scheme, which is commonly used in industry, and closed-loop scheme, less used but it offers higher...
The distributed regenerative drive system (DRDS) proposed in this paper is based on the three-phase grid quasi sinusoidal power converter and a common distributed dc-link as a power supply for the vector controlled three-phase power inverter and for the bidirectional dc-dc power converter. The braking energy of both three phase induction motor and dc motor are regenerated in the grid at unity power...
This paper presents a new approach using a robust extended Kalman filter (EKF) for induction motor speed estimation. The advancement of vector control in ac motor drives has become a widely acceptable technology to date. The recent techniques have emerged increasing attractions that sensorless vector controlled drives can achieve low costs and high reliability. This paper provides a design of a desired...
In recent years, the diagnosis of electric motors appealed increasingly to signal processing methods. To develop these methods, it is necessary to have a reliable mathematical model of the physical signal to be processed, in our case the signal is the stator current. Unfortunately, often this stator current can only be obtained from an expensive measurement bench, or from a complex modelling of the...
The characteristic of linear induction motor (LIM) are quite different from the rotary induction motor (RIM) due to the end effects and so on. The conventional high performance control scheme like indirect field oriented control (IFOC) cannot be directly adopted for LIM drives. In this paper, the traction characteristic of the LIM and RIM are compared from different perspectives. The performance of...
With increasing demand for higher efficiency, engineers are looking for an alternative solution to replace induction motors (IMs) in many applications. One of the very promising topologies is the permanent magnet (PM) motor with a squirrel cage on the rotor, which is referred to as the cage rotor PM motor in this paper. Based on the literature survey, the cage rotor PM motors have been studied and...
This paper presents a design of a self-tuned adaptive neuro-fuzzy torque controller (NFTC) technique with reduced number of membership functions (MF) applied to a decoupling linearized induction motor (IM) drive for enhancing the performance. The decoupling controlled of IM is modeled by making the flux and torque decoupled and simulation is carried out in the stationary reference frame with linearized...
Electrical propulsion is gaining popularity in the marine industry, because of its good energy management and better dynamic performance. An azimuth thruster driven by an electric motor is a common configuration found in modern electric propulsion systems. In recent years failures relating to bevel gears and bearings in azimuth thruster drive train failures were reported in the marine industry. The...
In typical traction Electric Vehicle applications, the DC-link voltage varies during transient accelerating and decelerating process in field-weakening region. The calculated reference voltages of current PI regulators tend to be larger than the one in steady state, which will result in the undesired flux-producing current oscillations. This further deteriorates the electromagnetic torque performance...
Energy efficiency improvement is the main target of many recent studies in various domains, especially for electrical drives which constitute the core of industrial applications. The simulation of induction motors is based on static and dynamic models that allow the study of their mechanical performances, as well as their power consumption and losses. However, the commonly used dynamic model doesn't...
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