Informatics Publishing Limited

Merin Lizbeth George ¹, C. N. Ravi ¹, R. Harikrishnan ¹, G. R. P. Lakshmi ¹

Affiliations
1 Sathyabama University, Chennai

Abstract

This paper presents electro-thermal modeling using Resistance-Capacitance (RC) for transient heat conduction to inspect temperature variation over the surface of a material (AISI 316 steel) with defective and non-defective zones. An electrical based analytic approach for stepped infrared thermography is presented based on the correspondence between the fundamental laws of heat transfer and electricity. The construction of approximate analogous electrical models of thermal problem has been used in the mathematical analysis of heat transfer. A rigorous discussion of the heat dissipation mechanism over the material is performed, to show that the temperature over the defect region is always greater than the reference area and to prove the analogy of thermal to electrical parameter from the surface temperature evolution.

Keywords

Electro-thermal Modeling, Stepped Infrared Thermography, AISI 316 Steel, Analytic Approach, Analogy

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I. Abinaya ¹, S. D. Sundarsingh Jebaseelan ¹, C. N. Ravi ¹

Affiliations
1 Department of EEE, Sathyabama University, Chennai – 600119, Tamil Nadu, IN

Abstract

Grid is the interconnection of power injection and consumption. This grid suffers by deficient of reactive power and its quality of power supply. This quality is improved by injecting reactive power by a FACTS device, STATCOM. STATCOM is a reactive power controller device based on the requirement it will inject or absorbs reactive power from the grid. The performance of STATCOM is improved by closed loop control system. The power quality is measured by THD (Total Harmonic Distortion). Compared to open loop it improves power quality by minimizing THD, improving power factor and RMS voltage of the grid. The simulation is carried out using MATLAB software, various graphs and numerical results are presented to prove the ability of closed loop STATCOM in the grid connected power system

Keywords

Closed Loop STATCOM, FACTS, Reactive Power Control, THD, Voltage Improvement

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K. Vasanth ¹, C. N. Ravi ¹, A. Padmaja ², M. Rajendra Prasad ¹

Affiliations
1 Department of ECE, Vidya Jyothi Institute of Technology, Aziz Nagar, Chilukur Road, Hyderabad - 500075, IN
2 Principal, Vidya Jyothi Institute of Technology, Aziz Nagar, Chilukur Road, Hyderabad - 500075, IN

Abstract

Over the years, various teaching methodologies such as socio constructive perspective, group projects, Mind Map, Z to A approach, Role play, Brown Bag were used to deliver engineering education easily to students so that they retain the concepts well. This paper deals with an effective teaching methodology named "Never Miss a Class" designed for 2K engineering students. The Method uses a video prepared by the instructor that briefs the content that happened in the class. If a student is absent for the concerned class then the instructor uploads the video to the students broadcast group on their personal phone (namely Whats app Group). The advantage of this technique is that even if the student misses the class, the video will be available with him at any time for learning. This is effective for numerical based papers in Engineering. The proposed teaching methodology is implemented on the second and third year students of Electronics and Communication Engineering of Vidya Jyothi institute of technology, Hyderabad. The effectiveness of the proposed technique is vivid when compared with other conventional teaching methodologies, when the former has good end exam results and the concept retaining capability of the students, when compared to latter. A proposed teaching methodology surpasses other methods thereby enabling the students to reproduce the concepts during their semester exam, or questioned elsewhere.

Keywords

Innovative Teaching Practices, Outcome Based Education, Learner Centric Approach.

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