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CES Transactions on Electrical Machines and Systems 2024年第1期8卷 86-102页

作者： G.Kovács the Ganz Electric Works BudapestHungary

The harmonics that appear in the squirrel cage asynchronous machine have been discussed in great detail in the literature for a long time. However, the systematization of the phenomenon is still pending, so we made an attempt to fill this gap in the previous parts of our study by elaborating formulas for calculation of parasitic torques. It was a general demand among those who work in this field towards the author to verify his formulas with measurements. In the literature, it seems,only one detailed, purposeful series of measurements has been published so far, the purpose of which was to investigate the effect of the number of rotor slots on the torque-speed characteristic curve of the machine. The main goal of this study is to verify the correctness of the formulas by comparing them with the referred series of measurements. Relying on this, the expected synchronous parasitic torques were developed for the frequently used rotor slot numbers-as a design guide for the ***, together with our complete table for radial magnetic pull published in our previous work, the designer has all the principles, data and formulas available for the right number of rotor slots for his given machine and for the drive system. This brings this series of papers to an end.

关键词： Asynchronous parasitic torques induction motor Squirrel cage rotor Space harmonics Synchronous parasitic torques

Enhanced Fuzzy Logic Control Model and Sliding Mode Based on Field Oriented Control of induction motor

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World Journal of Engineering and Technology 2024年第1期12卷 65-79页

作者： Alaa Tahhan Feyzullah Temurtaş Bandirma Onyedi Eylul Department of Electrical and Electronics Engineering Bandirma Türkiye AINTELLA Artificial Intelligence Technologies Company Bursa Türkiye

In the context of induction motor control, there are various control strategies used to separately control torque and flux. One common approach is known as Field-Oriented Control (FOC). This technique involves transforming the three-phase currents and voltages into a rotating reference frame, commonly referred to as the “dq” frame. In this frame, the torque/speed and flux components are decoupled, allowing for independent control, by doing so, the motor’s speed can be regulated accurately and maintain a constant flux which is crucial to ensure optimal motor performance and efficiency. The research focused on studying and simulating a field-oriented control system using fuzzy control techniques for an induction motor. The aim was to address the issue of parameter variations, particularly the change in rotor resistance during motor operation, which causes the control system to deviate from the desired direction. This deviation implies to an increase in the magnetic flux value, specifically the flux component on the q-axis. By employing fuzzy logic techniques to regulate flux vector’s components in the dq frame, this problem was successfully resolved, ensuring that the magnetic flux value remains within the nominal limits. To enhance the control system’s performance, response speed, and efficiency of the motor, sliding mode controllers were implemented to regulate the current in the inner loop. The simulation results demonstrated the proficiency of the proposed methodology.

关键词： induction motor Vector Control Fuzzy Logic Control Sliding Mode

Stator Fault Diagnosis of induction motor Based on Discrete Wavelet Analysis and Neural Network Technique

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Chinese Journal of Electrical Engineering 2023年第1期9卷 142-157页

作者： Abdelelah Almounajjed Ashwin Kumar Sahoo Mani Kant Kumar Sanjeet Kumar Subudhi Electrical Engineering Department C.V Raman Global UniversityBhubaneswar 752054India Electronics and Communication Engineering Department C.V Raman Global UniversityBhubaneswar 752054India

A novel approach by introducing a statistical parameter to estimate the severity of incipient stator inter-turn short circuit(ITSC)faults in induction motors(IMs)is *** the incipient ITSC fault and its severity is challenging for several *** stator currents in the healthy and faulty cases are highly similar during the primary stage of the ***,the conventional statistical parameters resulting from the analysis of fault signals do not consistently show a systematic variation with respect to the increase in fault *** objective of this study is the early detection of incipient ITSC ***,it aims to determine the percentage of shorted turns in the faulty phase,which acts as an indicator for severe damage to the stator *** of the motor in healthy and defective cases is performed using the Clarke Concordia transform.A discrete wavelet transform is applied to the motor currents using a Daubechies-8 *** statistical parameters L1 and L2 norms are computed for the detailed *** parameters are obtained under a variety of loads and defects to acquire the most accurate and generalized features related to the *** L1 and L2 norms creates a novel statistical parameter with notable characteristics to achieve the research *** artificial neural network-based back propagation algorithm is employed as a classifier to implement the classification *** classifier output defines the percentage of defective turns with a high level of *** competency of the adopted methodology is validated via simulations and *** results confirm the merits of the proposed method,with a classification test correctness of 95.29%.

关键词： Discrete wavelet transform induction motor inter-turn short circuit fault neural networks statistical parameters

Health Monitoring of induction motor Using Electrical Signature Analysis

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Journal of Donghua University(English Edition) 2022年第3期39卷 265-271页

作者：赵萍 College of Information Science and Technology Donghua University Shanghai 201620 China Department of Electrical Engineering and Technology University of Engineering and Technology Lahore 54890 Pakistan

induction motors have been widely used across industry,particularly with smaller loads and fixed speed *** works focus on fault detection of induction motors without considering the shutdown time and production in ***,this work aims to monitor the health conditions of the induction motor continuously through electrical signature analysis(ESA).The proposed technique is capable of predicting different kinds of faults,i.e.,rotor faults,stator phase imbalances,and supply cable faults at early ***,ESA in real time is ***,these current spectra were analyzed in frequency domain and compared with healthy current *** evaluation is implemented by observing these spectra under different faulty conditions.A comparative study is made and analyzed through MATLAB simulations.

关键词： induction motor electrical signature analysis(ESA) fast Fourier transform(FFT)

Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode observer

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Frontiers in Energy 2020年第4期14卷 836-849页

作者： Abdelkarim AMMAR Amor BOUREK Abdelhamid BENAKCHA LGEB Laboratory Department of Electrical EngineeringUniversity of BiskraBiskraBP 145Algeria

This paper proposes a design of control and estimation strategy for induction motor based on the variable structure *** describes a coupling of sliding mode direct torque control(DTC)with sliding mode flux and speed *** algorithm uses direct torque control basics and the sliding mode approach.A robust electromagnetic torque and flux controllers are designed to overcome the conventional SVM-DTC draw・backs and to ensure fast response and full reference tracking with desired dynamic behavior and low ripple *** sliding mode controller is used to generate reference voltages in stationary frame and give them to the controlled motor after modulation by a space vector modulation(SVM)*** second aim of this paper is to design a sliding mode speed/flux observer which can improve the control performances by using a sensorless algorithm to get an accurate estimation,and consequently,increase the reliability of the system and decrease the cost of using *** effectiveness of the whole composed control algorithm is investigated in different robustness tests with simulation using Matlab/Simulink and verified by real time experimental implementation based on dS pace 1104 board.

关键词： induction motor direct torque control(DTC) space vector modulation(SVM) sliding mode control(SMC) sliding mode observer(SMO) dS1104

Calculation and analysis of unbalanced magnetic pulls of different stator winding setups in static eccentric induction motor

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Chinese Physics B 2018年第8期27卷 619-626页

作者：周洋鲍晓华马明娜王春雨 School of Electrical Engineering and Automation Hefei University of Technology

In large-scale electric machines, unbalanced magnetic pull （UMP） caused by eccentricity usually results in stator-rotor rub, so it is necessary to investigate the amplitude and the influencing factors. This paper takes the squirrel-cage induction motor as an example. A magnetic loop model of an induction motor is established by an analytical method. The impact of stator winding setup （parallel branch and pole pairs） on each magnetomotive force （MMF） and unbalanced magnetic pull is analyzed. Using the finite element simulation method, the spatial and time distribution of flux density of the rotor outer circle under static eccentricity is obtained, and the unbalanced magnetic pull calculation caused by static eccentricity is completed. The conclusion of the influence of stator winding on the size of unbalanced magnetic pull provides reliable gist for motor noise and vibration analysis, and especially provides an important reference for large induction motor design.

关键词： induction motor static eccentricity unbalanced magnetic pull stator winding

Observer design for induction motor： an approach based on the mean value theorem

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Frontiers in Energy 2014年第4期8卷 426-433页

作者： Mohamed Yacine HAMMOUDI Abdelkarim ALLAG Mohamed BECHERIF Mohamed BENBOUZID Hamza ALLOUI MSE Laboratory Department of Electrical Engineering University ofBiskra BP 145 Biskra 07000 Algeria FCLab University of Technology of Belfort-Montbdliard CNRS 3539 Femto-ST UMR 6174 Belfort 90010 France LBMS University of Brest Kergoat street CS 93837 29238 BrestCedex 3 France Ecole militaire polytechnique UER ELT Algiers 1611 Algeria

In this paper, observer design for an induction motor has been investigated. The peculiarity of this paper is the synthesis of a mono-Luenberger observer for highly coupled system. To transform the nonlinear error dynamics for the induction motor into the linear parametric varying （LPV） system, the differential mean value theorem combined with the sector nonlinearity transformation has been used. Stability conditions based on the Lyapunov function lead to solvability of a set of linear matrix inequalities. The proposed observer guarantees the global exponential convergence to zero of the estimation error. Finally, the simulation results are given to show the performance of the observer design.

关键词： observer design differential mean value theorem (DMVT) sector nonlinearity transformation linear matrix inequalities (LMI) induction motor

Circle-criterion Based Nonlinear Observer Design for Sensorless induction motor Control

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International Journal of Automation and computing 2014年第6期11卷 598-604页

作者： Wafa Bourbia Farid Berrezzek Bachir Bensaker University Badji Mokhtar Department of Electrotechnic BP.12 Annaba 23000 Algeria University Med Cherif Messadia Souk Ahras 41000 Algeria Laboratory of Electromechanical Systems University Badji Mokhtar BP.12 Annaba 23000 Algeria

This paper deals with the design of a nonlinear observer for sensorless induction motor control. Based upon the circle criterion approach, a nonlinear observer is designed to estimate pertinent but unmeasurable state variables of the considered induction machine for sensorless control purpose. The observer gain matrices are computed as a solution of linear matrix inequalities(LMI) that ensure the stability conditions of the state observer error dynamics in the sense of Lyapunov concepts. Measured and estimated state variables can be exploited to perform a state feedback control of the machine system. The simulation results are presented to illustrate the effectiveness of the proposed approach for nonlinear observer design.

关键词： Nonlinear observer circle-criterion Lyapunov stability linear matrix inequalties (LMI) induction motor

An MRAS method for sensorless control of induction motor over a wide speed range

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控制理论与应用（英文版） 2011年第2期9卷 203-209页

作者： Xu, Zhanguo Shao, Cheng Feng, Dongju School of Electronics and Information Engineering Dalian University of Technology Dalian Liaoning 116023 China School of Mechanical and Engineering Dalian University of Technology Dalian Liaoning 116023 China

This paper addresses the problem of wide speed range sensorless control of induction *** proposed method is based on model reference adaptive system (MRAS),in which the current model serves as the adjustable model,and a novel hybrid model integrating the modified voltage model (MVM) and high-frequency signal injection method (HFSIM) are established to serve as the reference *** HFSIM works together with MVM to improve the performance of the rotor speed and rotor flux position estimation at low speed,whereas at high speed,the MVM acts *** addition,a rotor resistance online estimation scheme is proposed to update the rotor resistance contained in the adjustable model and to ensure the estimation accuracy *** results show that the proposed MRAS method is very effective from low to high speed range,including zero speed.

关键词： Sensorless control induction motor MRAS High-frequency signal injection method Hybrid reference model

Design and Development of a Vector Control System of induction motor Based on Dual CPU for Electric Vehicle

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Journal of Beijing Institute of Technology 2003年第3期12卷 290-295页

作者：孙逢春翟丽张承宁彭连云 School of Mechanical and Vehicular Engineering Beijing Institute of Technology

A vector control system for electric vehicle (EV) induction motor drive system is designed and developed. Its hardware system based on dual CPU(microcomputer 80C196KC and DSP TMS320F2407) is implemented. The fundamental mathematics equations of induction motor in the general synchronously rotating reference frame ( M T frame) used for vector control are achieved by coordinate transformation. Rotor flux equation and torque equation are deduced. According to these equations, an induction motor mathematical model and rotor flux observer model are built separately. The rotor flux field oriented vector control method is implemented based on these models in system software, some of the simulation results with Matab/Simulink are given. The simulation results show that the vector control system for EV induction motor drive system has better static and dynamic performance, and the rotor flux field oriented vector control method was practically verified.

关键词： vector control induction motor electric vehicle