ENGINEERING RESEARCH PAPERS

induction motor IEEE PAPER



Induction motor tests using MATLAB Simulink and their integration into undergraduate electric machinery courses
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Abstract:This paper describes MATLAB Simulink implementation of three induction motor tests, namely dc, no-load, and blocked-rotor tests performed to identify equivalent circuit parameters. These simulation models are developed to support and enhance electric

Motor current signature analysis to detect faults in induction motor drives-fundamentals, Data interpretation, and industrial case histories
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ABSTRACT Induction motor drives are the most widely used electrical drive system and typically consume 40 to 50 percent of an industrialized nation's total generating capacity. In the USA the total generating capacity is approximately 800,000 MW; consequently

Direct torque control for induction motor using intelligent techniques
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ABSTRACT In this paper, we propose two approach intelligent techniques of improvement of Direct Torque Control (DTC) of Induction motor such as fuzzy logic (FL) and artificial neural network (ANN), applied in switching select voltage vector. The comparison with

Direct mean torque control of an induction motor
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Abstract: A new method to control flux and torque of an induction motor is presented. Direct Mean Torque Control (DMTC) combines the good dynamic performance of Direct Torque Control (DTC) with the advantages of time equidistant control algorithms for digital

Motor current signature analysis and its applications in induction motor fault diagnosis
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Abstract---The Motor Current Signature Analysis (MCSA) is considered the most popular fault detection method now a day because it can easily detect the common machine fault such as turn to turn short ckt, cracked/broken rotor bars, bearing deterioration etc. The

State of the art of induction motor control
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Abstract:The induction motor is well known as the workhorse of industry. The development of variable speed induction motor drives has a long history of more than four decades. Today's sophisticated industrial drives are the result of the extensive research and

Fuzzy and neural control of an induction motor
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This paper presents some design approaches to hybrid control systems combining conventional control techniques with fuzzy logic and neural networks. Such a mixed implementation leads to a more effective control design with improved system

Evolutionary algorithms for induction motor parameter determination
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Abstract-This paper demonstrates the applicability of evolutionary algorithms to the problem of motor parameter determination. Motor parameter determination problems can range from high accuracy requirement for motor controlled drives to low accuracy requirements for

Nonlinear sliding mode control of an induction motor
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SUMMARY This paper proposes a new non-linear sliding mode controller for induction motors. The controller assumes that only the motor speed and stator currents are measured and seeks to provide asymptotic tracking of speed . The control law incorporates a

Experimental implementation of a robust damped-oscillation control algorithm on a full-sized, two-degree-of-freedom, AC induction motor-driven crane
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ABSTRACT When suspended payloads are moved with an overhead crane, pendulum like oscillations are naturally introduced. This presents a problem any time a crane is used, especially when expensive and/or delicate objects are moved, when moving in a cluttered

Nonlinear sensorless indirect adaptive speed control of induction motor with unknown rotor resistance and load
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Abstract In this paper, a nonlinear indirect adaptive sensorless speed controller for induction motors is proposed. In the controller, only the stator currents are assumed to be measurable. Flux observers and rotor speed estimator are designed to relax the need of flux and speed

Space vector modulated–direct torque controlled (dtc–svm) inverter–fed induction motor drive
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The Adjustable Speed Drives (ADS) are generally used in industry. In most drives AC motors are applied. The standard in those drives are Induction Motors (IM) and recently also Permanent Magnet Synchronous Motors (PMSM) are offered. Variable speed drives are

A neural network autoassociator for induction motor failure prediction
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Abstract We present results on the use of neural network based autoassociators which act as novelty or anomaly detectors to detect imminent motor failures. The autoassociator is trained to reconstruct spectra obtained from the healthy motor. In laboratory tests, we have

Assessment of direct torque control for induction motor drives
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Abstract. Among all control methods for induction motor drives, Direct Torque Control (DTC) seems to be particularly interesting being independent of machine rotor parameters and requiring no speed or position sensors. The DTC scheme is characterized by the absence

Direct torque control of induction motor with fuzzy minimization torque ripple
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This paper presents an improved direct torque control based on fuzzy logic technique. The major problem that is usually associated with DTC drive is the high torque ripple. To overcome this problem a torque hysteresis band with variable amplitude is proposed

AC Induction Motor control using constant V/Hz principle and Space Vector PWM technique with TMS320C240
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Abstract The principles of constant V/Hz control for AC Induction motor and space vector PWM technique are reviewed. Two different implementations are presented. Implementation issues such as command voltage generation, switching pattern determination, speed

Bearing current path and pulse rate in PWM-inverter-fed induction motor
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Abstract-In this paper we are presented the quantitative experimental results of an amplitude and a rate of bearing current pulses emerging in common use PWM drives configuration. Based on measurement data and a simulation model it has been shown that a whole path

Saturation compensation schemes for vector controlled induction motor drives
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ABSTRACT The schemes used in field oriented induction machines for rotor flux estimation and indirect vector control are derived from constant parameter induction machine model. However, the parameters of the machine are subject to variation due to

An effective induction motor control for photovoltaic pumping
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Abstract:A new design of an efficient batteryless pumping system powered from photovoltaic panels, comprising a push–pull converter and an induction motor, is presented. Detailed evaluation of the energy processing cycle has allowed the formulation of a set of

Powerful nonlinear observer associated with field-oriented control of an induction motor
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In this paper, we associate field-oriented control with a powerful nonlinear robust flux observer for an induction motor to show the improvement made by this observer compared with the open-loop and classical estimator used in this type of control. We implement this

Powerful nonlinear observer associated with field-oriented control of an induction motor
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In this paper, we associate field-oriented control with a powerful nonlinear robust flux observer for an induction motor to show the improvement made by this observer compared with the open-loop and classical estimator used in this type of control. We implement this

Sliding mode control of induction motor using simulation approach
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Summary The main objectives of this paper is aimed to control the position of a field oriented Induction Servo motor drive for a given reference input signal in a very efficient way and to compare the two control schemes using Matlab/Simulink. To design a total sliding-mode

Design optimization of induction motor by genetic algorithm and comparison with existing motor
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Abstract-This paper presents an optimal design method to optimize three-phase induction motor in manufacturing process. The optimally designed motor is compared with an existing motor having the same ratings. The Genetic Algorithm is used for optimization and three

A comparison of sensorless speed estimation methods for induction motor control
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Abstract–Many different techniques have been proposed to estimate the speed of an induction motor without a shaft sensor. Three representative approaches are considered in the paper. The methods are compared in terms of their sensitivity to parameter variations,

Multilevel inverter with 12-sided polygonal voltage space vector locations for induction motor drive
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Abstract: Multilevel inverters are preferred over two-level inverters in high-voltage, high- power applications mainly because low-switching-frequency PWM schemes can be implemented with power devices of low-voltage ratings. Common multilevel inverter

Sliding mode controller design of induction motor based on space-vector pulsewidth modulation method
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Abstract. In this paper, an integrated sliding mode controller (SMC) based on spacevector pulsewidth modulation method is proposed to achieve high-performance speed control of an induction motor. Using a field-oriented control principle, a flux SMC is first established to

A robust sensorless direct torque control of Induction motor based on MRAS and extended Kalman filter
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Abstract In this paper, the classical Direct Torque Control (DTC) of Induction Motor (IM) using an open loop pure integration suffers from the well-known problems of integration especially in the low speed operation range is detailed. To tackle this problem, the IM variables and

Simulation and analysis of PWM inverter fed induction motor drive
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Abstract:Sinusoidal Pulse Width Modulation variable speed drives are increasingly applied in many new industrial applications that require superior performance. Recently, developments in power electronics and semiconductor technology have lead

A fuzzy rotor resistance updating scheme for an IFOC induction motor drive
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Conclusions: The GLP and CLP methods are proposed for allocating real power losses attributed to multiple individual flow contributors who use the same transmission line or system. The CLP method is based on the Occam's razor principle and is proved to be fair

Comparison of induction motor diagnostic methods based on spectra analysis of current and instantaneous power signals
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Abstract. The comparison of effectiveness of induction motors fault detection methods based on experimental results analysis is presented. Researches showed possible disadvantages of the current spectra analysis method and advantages of the method based on phase

Condition monitoring and fault diagnosis of induction motor using motor current signature analysis
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ABSTRACT Condition monitoring of induction motor have been a challenging task for the engineers and researchers mainly in industries. There are many condition monitoring methods, including vibration monitoring, thermal monitoring, chemical monitoring,

Adaptive neuro-fuzzy speed controller for vector controlled induction motor drive
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Abstract–This paper presents a novel adaptive neuro-fuzzy based speed controller for vector controlled induction motor drive. The proposed neuro-fuzzy controller incorporates fuzzy logic algorithm with a five-layer artificial neural network (ANN) structure. The conventional

A strategy for improving reliability of field oriented controlled induction motor drives
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Abstract:Although design of induction motor drives employing field-oriented control has reached a relatively mature state, relatively little effort has been expended on improving the reliability of these drives. In this paper a new, improved induction motor drive topology and

Induction motor fault diagnostic and monitoring methods
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Abstract Induction motors are used worldwide as the workhorse in industrial applications. Although, these electromechanical devices are highly reliable, they are susceptible to many types of faults. Such fault can became catastrophic and cause production shutdowns,

Differential evolution based optimal control of induction motor serving to textile industry
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Abstract:This paper illustrates the importance of controllers on energy saving opportunity of partial loaded three-phase induction motor in textile mill (ring spinning frame) applications. The economics of a scalar controlled 100 HP induction motor is investigated with three

Multilayer control of an induction motor drive: A strategic step for automotive applications
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Abstract:Fault tolerance is a critical attribute in automotive electrical and propulsion systems. In this paper, a control scheme is presented that allows an induction motor drive system to operate in the event of multiple sensor failures. Automatic diagnosis of sensor

Speed control of induction motor using fuzzy PI and optimized using GA
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Abstract:In recent years, the field oriented control of induction motor drive is widely used in high performance drive system. Induction motor has many advantages like it is very simple. It has sufficiently high efficiency.. Linear Proportional–Integral (PI) control is not a well

Pulse width modulation technique with harmonic injection and frequency modulated carrier: formulation and application to an induction motor
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Abstract: A new generated pulse width modulation (PWM) technique is presented, making it possible to significantly reduce harmonics in comparison to currently used PWMs operating in real time. This improvement means that a motor connected to an inverter that is

Rotor faults detection in induction motor by wavelet analysis
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ABSTRACT Motor current signature analysis has been successfully used for fault diagnosis in induction motors. However, this method does not always achieve good results when the speed or the load torque is not constant, because this cause variation on the motor slip

An adaptive sliding mode control scheme for induction motor drives
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ABSTRACT An adaptive sliding-mode control system, which is insensitive to uncertainties, is proposed to control the position of an induction motor drive. The designed sliding mode control presents an adaptive switching gain to relax the requirement for the bound of

Rotor faults detection in induction motor by wavelet analysis
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ABSTRACT Motor current signature analysis has been successfully used for fault diagnosis in induction motors. However, this method does not always achieve good results when the speed or the load torque is not constant, because this cause variation on the motor slip

An adaptive sliding mode control scheme for induction motor drives
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ABSTRACT An adaptive sliding-mode control system, which is insensitive to uncertainties, is proposed to control the position of an induction motor drive. The designed sliding mode control presents an adaptive switching gain to relax the requirement for the bound of

Induction motor modelling of broken rotor bars and fault detection by parameter estimation
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Abstract:An original approach is presented in this paper to diagnosis broken rotor bars in squirrel cage induction motors. A new model based on the study of the rotor faults effect on the electrical parameters is developed. We apply the Concordia transform on multi-loops

Real-time rotor and stator resistances estimation of an induction motor
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Abstract: In this paper, four schemes for the real-time identification of induction motor parameters are presented. The first and second schemes are for separate identification of the rotor and stator resistances while the third scheme performs simultaneous

Impact of induction motor loads into voltage stability margins of large systems
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Abstract–Voltage stability margins are highly dependent on system load characteristics as well as on the modeling of the subtransmission network and associated voltage control equipment. Induction motors are loads that present high reactive power consumption

Development of single phase induction motor adjustable speed control using M68HC11E-9 microcontroller
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Abstract: This study investigates the performance of single-phase induction motor using microcontroller M68HC11E-9. The microcontroller senses the speed's feedback signal and consequently provides the pulse width variation signal that sets the gate voltage of the

Uniqueness of torque-speed characteristics of an induction motor
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Abstract:This letter states and proves a uniqueness theorem for the torque-speed characteristics (TSC) of an induction motor. Given three arbitrary points at asynchronous speed on the TSC curve, it develops a method to interpolate the entire curve and indicate

A robust nonlinear observer for states and parameters estimation and on-line adaptation of rotor time constant in sensorless induction motor drives
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This paper presents a robust non linear observer for variables and parameters estimation in sensorless Indirect Field Oriented Control (IFOC) of induction motors (IM). Based on the reduced order of the IM model, the rotor fluxes and time constant are estimated with the

Particle swarm and fuzzy logic based optimal energy control of induction motor for a mine hoist load diagram
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Abstract:This paper investigates the importance of controllers on energy saving opportunity of partial loaded three-phase induction motor in mine hoist applications. The input power of a vector controlled 1 HP induction motor is investigated with three topologies namely

A New Method for Losses Minimization in IFOC Induction Motor Drives
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Abstract:the present work is a contribution to improve efficiency and robustness of an indirect field oriented control (IFOC) of an induction motor (IM) drives. The IFOC IM efficiency deteriorates mainly for two reasons: The variation of rotor resistance and operation to

Application of Radial Basis Neural Network to diagnostics of induction motor stator faults using axial flux
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Abstract. The paper presents diagnostics of induction motor stator faults. The decision on stator winding condition has been taken using the axial flux and based on artificial neural network with radial basis transfer function. The axial flux has been measured for different

Passivity-based control with simultaneous energy-shaping and damping injection: Theinduction motor case study
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Abstract: We argue in this paper that the standard procedure used Passivity–Based Controller (PBC) designs of splitting the control action into energy–shaping and damping injection terms is not without loss of generality, and actually reduces the set of problems

Sensorless three-phase induction motor direct torque control using sliding mode control strategy laboratory set-up for motor speed control teaching
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Abstract-A three-phase induction motor direct torque control laboratory set-up for simulation and experimental activities is presented in this paper. It includes both PI controllers and sliding-mode controllers and uses a sensorless method to estimate rotor speed. The

Detection of bearing faults of induction motor using Park's Vector Approach
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Abstract:The reliability of an induction motor is of paramount importance in industrial, commercial, aerospace and military applications. Bearing play an important role in the reliability and performance of all motor systems. Due to close relationship between motor

Speed and rotor time constant estimation via MRAS strategy for induction motor drives
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Abstract:This paper deals with simultaneous estimation of induction motor speed and its inverse rotor time constant for sensorless induction machine drives purpose. The proposed algorithm is based on the model reference adaptive system the ory (MRAS). The

Indirect vector control of an induction motor with fuzzy-logic based speed controller
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Abstract:The aim of this paper is to present a new speed control structure for induction motors (IM) by using fuzzylogic based speed controllers. A fuzzy controller is designed to achieve fast dynamic response and robustness for low and high speeds. Different types of

Speed Sensorless DTC for Induction Motor Based on an Improved Adaptive Flux Observer
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Abstract–This paper presents a method for estimation of the rotor speed and stator flux based on the theory of an adaptive control and a direct torque control (DTC). A linear observer for estimation of the stator flux is synthesized, by using a Lyapunov function. The

Review on efficiency improvement in squirrel cage induction motor by using DCR technology
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Induction motors account for approximately 50% of the overall electricity use in industrialized countries. In the agricultural and commercial sectors also, power consumption by ac motors is quite substantial. On an average, the energy consumed by a motor during its life cycle is

Regular paper Rotor speed estimation for indirect stator flux oriented induction motordrive based on MRAS scheme
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In this paper, a conventional indirect stator flux oriented controlled (ISFOC) induction motor drive is presented. In order to eliminate the speed sensor, an adaptation algorithm for tuning the rotor speed is proposed. Based on the model reference adaptive system (MRAS)

Current and vibration monitoring for fault diagnosis and root cause analysis of induction motor drives
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ABSTRACT Induction motor drives are the most widely used electrical drive system and they typically consume 40 percent of an industrialized nation's total generating capacity. In the USA the total generating capacity is approximately 800,000 MW, consequently induction

Regular paper Rotor speed estimation for indirect stator flux oriented induction motordrive based on MRAS scheme
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In this paper, a conventional indirect stator flux oriented controlled (ISFOC) induction motor drive is presented. In order to eliminate the speed sensor, an adaptation algorithm for tuning the rotor speed is proposed. Based on the model reference adaptive system (MRAS)

Current and vibration monitoring for fault diagnosis and root cause analysis of induction motor drives
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ABSTRACT Induction motor drives are the most widely used electrical drive system and they typically consume 40 percent of an industrialized nation's total generating capacity. In the USA the total generating capacity is approximately 800,000 MW, consequently induction

Modeling and simulation of the induction motor with position-dependent load torque
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Abstract:This paper presents modeling and analysis of the operation of an induction motor loaded by a position-dependent load in order to derive an accurate time-invariant model. This model is developed in terms of variable frequency dynamic phasors. Comparisons

MTPA control of induction motor drive using fuzzy-neural networks controller
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The profit of the induction motor for drive applications are well established [1-2]. As a result, the induction motor has become growingly popular for use in high performance drive

Tandem Converter Fed Induction Motor Drive Controlled With Re-Configurable Vector Control System
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Abstract-The paper deals with rotor field oriented vector control structures for the induction motor drives fed by the so-called tandem frequency converter. It is consisting in two different types of frequency converters in parallel arrangement. MATLAB-Simulink

Performance of a sensorless speed control for induction motor using DTFC strategy and intelligent techniques
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In This paper, the authors propose a Sensorless Direct Torque and Flux Control (DTFC) of Induction Motor (IM) using two approach intelligent techniques: Mamdani Fuzzy Logic (FL) controller is used for controlling the rotor speed and Artificial Neural Network (ANN)

Time-harmonic finite-element analysis of eddy currents in the form-wound stator winding of a cage induction motor
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Abstract: A finite-element model for calculation of eddy-current and circulating current losses in a multi-conductor stator winding of a cage induction motor is presented. In this model, the eddy current formulation of the series and parallel connected stator bars is solved together

3-Phase AC induction motor vector control using a 56F80x, 56F8100 or 56F8300 device
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This application note describes the design of a 3-phase AC Induction Motor (ACIM) vector control drive with position encoder coupled to the motor shaft. It is based on Freescale's 56F80x and 56F8300 dedicated motor control devices. The software design takes

Design optimization of linear induction motor for improved efficiency and power factor
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Abstract-Linear electrical motors (LMs) are increasingly used in industry applications to develop linear motion. However, they suffer from two major drawbacks ie low efficiency and low power factor which cause more energy consumption, a rise in input current and

Diagnostics of induction motor based on analysis of acoustic signals with application of FFT and classifier based on words
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Paper presents method of diagnostics of imminent failure conditions of induction motor. This method is based on a study of acoustic signals generated by induction motor. Sound recognition system is based on algorithms of data processing, such as FFT and classifier

Nonlinear feedback control and torque optimization of a doubly fed induction motor
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In this paper, the authors propose a new vector control intended for doubly fed induction motor (DFIM) mode. The use of the state-all-flux induction machine model with a fluxes orientation constraint gives place to a simpler control model. Since the double flux

Improving mechanical characteristics of inverter-induction motor drive system
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Abstract: An inverter-three-phase squirrel-cage induction motor drive system with improved mechanical characteristics is presented. The proposed system provides mechanical characteristics with constant maximum torque or increased maximum torque and reduced

Influence of fuzzy adapted scaling factors on the performance of a Fuzzy logic controller based on an indirect vector control for induction motor drive
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This work investigates a simple design of the scaling factors fuzzy tuning procedure of a fuzzy logic controller (FLC) for speed regulation of an indirect field-oriented induction motor (IM). A simple but powerful fuzzy adaptation of the FLC three scaling factors is proposed.

Torque and Speed Modes Simulation of a DTC-Controlled Induction Motor
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Abstract By the huge advantages associated, induction motors drives are still justifying research and development. This paper presents the work developed in Direct Torque Control (DTC) based drives. With a growing importance in several applications, this

Bogdanov-Takens bifurcation in indirect field oriented control of induction motor drives
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Abstract:In this paper we explore further the occurrence of bifurcations in the indirect field oriented control of induction motors. This study is a continuation of previous publications . New results reveal the occurrence of codimension-two bifurcation phenomena,

Direct Quadrate (DQ) Modeling of 3-Phase Induction Motor Using MatLab/Simulink
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Abstract This paper addresses the impact of load modeling in particular induction motor. The paper proposes a methodology that is based on advanced modeling capabilities, represented by dynamic modeling of induction motor. The objective is to analyze the

Fast transients in the operation of an induction motor with vacuum switches
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Abstract-Generally in industrial plants, over voltages of impulse type are not considered, hence the impulse test of the equipment is not specified. This paper shows one of these cases, but high and fast voltage transients can arise in a 2.3 kV system, when the starting

Internal model controller of an ANN speed sensorless controlled induction motor drives
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Abstract: This study deals with the performance analysis and implementation of a robust sensorless speed controller. The robustness is guaranteed by the use of the Internal Model Controller (IMC). An intelligent algorithm is evolved to eliminate the mechanical speed. It

Adaptive fuzzy sliding-mode control of speed sensorless universal field orientedinduction motor drive with on-line stator resistance tuning
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Abstract–In this paper, a speed sensorless induction motor drive is introduced which is direct vector controlled in a universal field-oriented (UFO) reference frame. This chosen reference frame is easily linked with direct and indirect rotor, stator and air gap field orientation

Comparison between direct-on-line, Star-Delta and auto-transformer induction motorstarting method in terms of power quality
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Direct-On-Line (DOL), Star-Delta, and Auto-transformer induction motor starting method in terms of power quality. The purpose of this research is to find out the most reliable and practical starting method which has the less power quality problems. These three basic

Modeling and simulation of fpga based direct torque control of induction motor drive
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Abstract:Modern AC drives require a fast digital realization of many mathematical operations concerning control and estimator's algorithms, which are time consuming. Therefore developing of custom-built digital interfaces as well as digital data processing

Two-phase power electronic drive with split-single-phase induction motor
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Abstract-The paper deals with two phase power electronic drive consisting of LLC resonant converter, high frequency AC link, two half-bridge matrix converters (MXC) and split single- phase induction motor (S-SPIM). The electronic system generates two orthogonal output

Computer simulation of real time identification for induction motor drives
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Abstract. The paper was meant to be an unitary approach to state and parameter identification in induction motor drives. The main methods for rotor flux, mechanical parameters and load torque estimation were compared and classified. In the area of state

Simulation Analysis of SVPWM Inverter Fed Induction Motor Drives
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Abstract: In this paper represent the simulation analysis of space vector pulse width modulated (SVPWM) inverter fed Induction motor drives. The main objective of this paper is analysis of Induction motor with SVPWM fed inverter and harmonic analysis of voltages

An extended Kalman filter and an appropriate model for the real-time estimation of the induction motor variables and parameters
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ABSTRACT This paper presents an efficient discrete-time second-order model of an induction motor for the rotor flux and parameters real-time estimation using an Extended Kalman Filter. Compared with the usual model, this model offers many advantages for real

Exponentially stable non-linear control for speed regulation of induction motor with eld-oriented PI-controller
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SUMMARY On the basis of a novel dynamic model obtained under a special non-linear co- ordinate transform on ad} q-axis model (wrt the stationary reference frame) of an induction motor, a simple but e! ective control law for speed regulation is proposed in this paper.

Scalar Speed Control of a dq Induction Motor Model Using Fuzzy Logic Controller
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Abstract: This paper presents a rule-based fuzzy logic controller applied to a scalar closed loop Volts/Hz induction motor (IM) control with slip regulation and its simulation results. They are also compared with those of a PI controller. The IM is modeled in terms of dqwindings,

Automatic input/output modeling of a squirrel-cage induction motor drive system using neural network
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Abstract: This paper presents an alternative input/output modelling of a squirrel-cage induction motor drive system. Usually these systems are modelled using state variables like rotor currents or linking fluxes, some of them extremely difficult to obtain. A neural network

Control and synchronization of chaos in an induction motor system
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Abstract. This paper brings attention to the nonlinear dynamics of an induction motor's drive system with indirect field controlled. To understand the complex dynamics of system, some basic dynamical properties, such as equilibrium, stability are rigorously derived and

High performance sensorless vector control of induction motor drives
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Increasing induction motor drives efficiency: understanding the pitfalls
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ABSTRACT Although energy conversion in motor driven systems has a high efficiency, a small increase in efficiency can lead to significant economical en environmental benefits. Therefore, this paper endeavors to present a comprehensive overview of factors affecting

Run-time Reconfiguration of Tandem Inverter used in Induction Motor Drives
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ABSTRACT The paper presents a short introduction to reconfigurable systems and why are they used or should be used in control of AC drives. The reconfigurable concept is introduced and there are treated the reconfiguration problems. Reconfigurable hardware

Induction motor drive using fuzzy logic
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Abstract: Variable speed drives are growing and varying. Drives expanse depend on progress in different part of science like power system, microelectronic, control methods, and so on. Artificial intelligent contains hard computation and soft computation. Artificial

VF control of 3-phase induction motor using space vector modulation
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VF control using the Sine PWM algorithm is a popular algorithm for AC induction motor control; however, this algorithm has certain drawbacks which affect the overall system efficiency. A more advanced switching algorithm, like Space Vector Modulation (SVM),

Virtual electrical machinery laboratory: a fuzzy logic controller for induction motor drives
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In this paper, an educational tool was presented to supplement existing undergraduate and graduate electrical machinery laboratory instruction, so that students could establish a thorough understanding of a fuzzy logic controller (FLC) and an indirect vector control

Space-vector characterization of induction motor operating conditions
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Abstract-Induction motors are treated as the workhorse of modern day industries. During operation, they are subjected to various operational stresses that degrade their performance with time. Condition monitoring of induction motors are thus of prime importance. Among

Artificial Intelligence Based Dynamic Simulation of Induction Motor Drives
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Abstract: Induction Motors have many applications in the industries, because of the low maintenance and robustness. The speed control of induction motor is more important to achieve maximum torque and efficiency. This paper presents an integrated environment

Observability of speed in an induction motor from stator currents and voltages
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Abstract:This paper describes a new approach to estimating the speed of an induction motor from the measured terminal voltages and currents without the use of a speed/position sensor. The new observer uses a purely algebraic speed estimator to stabilize a dynamic

frequency signal injection method in induction motor



Transducer less position and velocity estimation in induction and salient AC machines
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ratio, AL/L (and AZ/Z, which corresponds to Ii, /lie) increases with signal frequency until =l is believed attributable to rotor conductor skin effects forcing an increasing proportion of high-frequency flux to At frequencies above ~5 kHz, lamination skin effects are believed to reduce If the rotating signal is injected, the rotating effect should be compensated and the torque ripples of various frequencies are generated The algorithm based on the harmonic signal injection to the motor has been proposed for zero or low stator frequency operation in [5

Inverter nonlinearity effects in high-frequency signal-injection-based sensorless controlmethods
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The voltage distortion is relatively larger for slower frequencies (Fig From this study, requirements for deadtime compensation methods suitable for high-frequency carrier-signal voltage and RD Lorenz, Implementation issues affecting the performance of carrier signal in- jection

Position estimation in induction machines utilizing rotor bar slot harmonics and carrier-frequency signal injection
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Finally, the behavior of the machine at high frequencies places a final constraint on the carrier-signal set equal to 1 V (7.1% of the dc-bus voltage) with a carrier frequency of 1kHz way of ex- tracting the spatial information present in the negative-sequence carrier-signal current.

Initial rotor position estimation of permanent magnet synchronous motor based on high frequency voltage signal injection method [J]
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direction of rotor flux, so the high frequency signal must be injected into ;A Novel Method of Rotor High-frequencySignalInjection for Speed

On-line stator winding fault diagnosis in inverter-fed ac machines using high frequency signal injection
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arbitrary, since its value determines the spectrum resolution, ie the separation between consecutive frequency components that can saturation-induced harmonics may be a significant component of the negative sequence carrier signal current at frequencies according to

Flux observer enhanced with low-frequency signal injection allowing sensorless zero-frequency operation of induction motors
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the fundamental-wave motor model work well at sufficiently high stator frequencies, but they the signal carrying useful information is often corrupted by other signals of the combining a fundamental-wave flux observer with a high- frequency signal injection method is proposed in 763 (a) (b) Fig. 2. Impedance of motor under test. (a) Spatial impedance at various frequencies under no-load condition. (b) Average values of high-frequency impedance according to d- and q-axes currents injection signal: 500 Hz, 30 V). Fig. addresses the sensorless speed and position control of induction motors using high-frequency injection at zero and low frequencies. where the slot harmonic frequency sh = rNr/p and r is the rotor speed. The normalized ipa component of the position signal is shown in Fig The decreasing signal-to-noise ratio of the back EMF and the increasing effect of the small so that the voltage model dominates the hybrid estimation at the lower transition frequencies. so it produces a negligible phase shift of the flux estimate at the upper-transition frequency. The proposed high frequency method is mainly, applicable to operation at low fundamental frequencies. Field-Orientation Control of an Induction Machine by High-FrequencySignal In- jection of Saturation-Induced Saliencies and theri Effect on Carrier Signal Based Sensorless

Online diagnostics in inverter-fed induction machines using high-frequency signal injection
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of the machine, ie, to the flux level, load level, fundamental excitation frequency, and temperature the range of several hundred hertz, ie, spectral separation between the carrier signal and the Supporting this, carrier frequencies as large as one-fourth of the switching fre- quency

Sensorless vector control of induction motors at very low speed using a nonlinear inverter model and parameter identification
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of compensating the amplitude and phase angle errors at low frequencies have been Speed estimation is also a problem in the neighbourhood of zero stator frequency. estimations with online rotor resistance estimation of induction motor without signal injection,