Conference Papers

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    Design of computer application for 3 phase vector control induction motor drive
    (2007) Shet, M.S.K.; Yaragatti, R.Y.
    Development in the field of microelectronics and control has resulted in Vector control of Induction motor. The Induction motors are used in many adjustable speed applications. In order to understand and analyze the vector control of Induction motors, the dynamic model of the machine is necessary along with the steady state analysis and design of the Induction motors. It is the objective to explain the various forms in a concise way to understand clearly. In addition, the fundamental dynamic performance of the machine in the synchronous frame is developed along with the principles of closed loop vector control is discussed in general terms and simulation has been carried out on a laboratory model.
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    DQ modeling of induction motor for virtual flux measurement
    (2010) Sushma, P.; Rajalakshmi Samaga, R.; Vittal, K.P.
    Three phase induction motors are continuing to remain as work horses in industrial applications. The accurate behavioral modeling of induction motor helps in designing controller for the machine and also useful in detection of faults in machines. Almost all faults in the induction motor affect the flux in the air gap. These fluxes can be measured virtually using dq model of induction motor by feeding voltage and current values extracted in real time and stored. In this paper, DQ model is developed in stator reference frame using MATLAB-SIMULINK platform and a data acquisition system supported with LabVIEW is used to obtain motor terminal voltage and current signals which are useful in estimation of flux in an actual machine. ©2010 IEEE.
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    Air gap mixed eccentricity severity detection in an induction motor
    (2011) Rajalakshmi Samaga, R.; Vittal, K.P.
    Non invasive fault detection unit for an induction motor has become an integral part of industrial drives. As the current is the primary quantity to get affected by the non uniform air gap flux, Motor Current Signature Analysis is preferred as compared to vibration analysis for mixed eccentricity fault detection in an induction motor. In this paper, Power Spectral Density analysis is performed on the stator current data samples obtained from modeling and simulation of the induction motor. An Eccentricity Severity Factor is defined and is shown that this factor increases with increase of air gap eccentricity in the machine. Hence it can be used as a measure to assess the degree of eccentricity in the machine. © 2011 IEEE.
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    Virtual laboratory platform for enhancing undergraduate level induction motor course using MATLAB/Simulink
    (2012) Syal, A.; Gaurav, K.; Moger, T.
    With the advent of various simulation software packages and low cost personal computing devices in the market, computer-aided teaching tools have become an important part of present pedagogy. These tools support the classroom teaching by enabling the instructor to illustrate the working of various systems by means of computer generated graphics. This paper presents a very easy and interactive model based on computer simulation in MATLAB/Simulink to simulate the no load test, load test and blocked rotor test on 3-phase slip ring and squirrel cage induction motors. The well known equivalent circuit model along with the torque equation is used to model the motor without considering the effects of magnetic saturation. The simulation environment plots all relevant graphs including circle diagram of the given motor, thus acting as a complete graphical teaching aid for the induction machine course at undergraduate level. This model facilitates learning especially for the students pursuing a distance-learning/correspondence course which does not provide them with the laboratory facilities. © 2012 IEEE.
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    Challenges in Developing Hardware-In-Loop Model of Cage Induction Motor with Eccentricity Fault
    (IEEE Computer Society help@computer.org, 2018) Ilamparithi, T.; Rangachar, B.; Rangineedi, T.; Nagendrappa, H.
    In this paper, an attempt is made to develop a MATLAB based Hardware-In-Loop compatible model of a three phase cage induction motor with a provision to accommodate eccentricity fault. The major benefits of the attempted work include compatibility with commercially available real-time simulators, facilitation of testing motor control units of electric vehicles when the motor is subjected to eccentricity fault, and ability to simulate in real-time varying severities of eccentricity fault. Modeling of the eccentricity fault is made by using the widely adopted modified winding function approach. Real-time simulation of the developed model is attempted by building a MATLAB model that utilizes pre-computed inductances for real-time execution. Finally, the major challenges encountered in this attempt are presented and discussed to pave way for further research. © 2018 IEEE.