Aritra Banerjee

Bio: Aritra Banerjee is an academic researcher from National Institute of Technology, Karnataka. The author has contributed to research in topics: Arbitrary waveform generator & Oscilloscope. The author has an hindex of 1, co-authored 1 publications receiving 3 citations.

A study of starting methods for an induction motor using an arbitrary waveform generator

Abstract: In this paper the use of an arbitrary waveform generator to generate desired signals in real-time is illustrated by simulating an induction motor operation along with various starting techniques. An off-line digital simulation of an induction motor is carried out on MATLAB/SIMULINK. The resulting sample-data files pertaining to signals such as electromagnetic torque and rotor speed are used in the arbitrary waveform generator to trace waveforms on an oscilloscope in real-time. This arbitrary waveform generator is developed on the Real-Time Application Interface (RTAI) enabled-Linux platform. The paper presents results of some case studies carried out by employing different starting techniques such as direct on-line and star-delta starting methods. Such a tool will be of great help in enhancing the class room learning.

An invertible dependence of the speed and time of the induction machine during no-load direct start-up

Abstract: In this paper, an invertible dependence of the speed and time of the induction machine during no-load direct start-up is presented. Namely, based on the parameters of the induction machine equivale...

A Novel Exact Analytical Solution Based on Kloss Equation towards Accurate Speed-Time Characteristics Modeling of Induction Machines during No-Load Direct Startups

Abstract: The acceleration time of induction machines (IMs) is essential for proper protection-relay settings of the machine to prevent voltage sags in local power areas. In this paper, mathematical modeling of IMs’ speed-time characteristics during no-load direct startup has been presented. Unlike the approaches presented in the literature, the proposed approach includes the bearing losses, in which two expressions of the speed-time characteristics of IMs during no-load direct startup are derived. The first expression was derived based on the Kloss equation used for representing the torque, and the second expression was derived based on the torque expression determined from the Thevenin equivalent circuit of the machine. The derived expressions’ accuracy was validated using laboratory measurement and computer simulation approaches. The results obtained show a good agreement between the measured and simulated speed-time characteristics of two IMs. Finally, the proposed formulations can provide a simple analytical base to enable accurate IM modeling.

Analytical solution for determination of induction machine acceleration based on Kloss equation

Abstract: In this paper, the analytical solution for the determination of induction machine acceleration, i.e. acceleration-time characteristic, during no-load direct start-up is proposed. The proposed dependence is derived from the Kloss equation for torque-speed relation for the induction machine. Also, the analytical solution for the maximal value of the acceleration is derived in this paper. The results obtained using developed expressions are compared with corresponding results obtained using the developed Matlab/Simulink model for analyses of the induction machine starting the process. Therefore, very high degree of accuracy is obtained.