ISSN: 2321-4260
Trends in
Electrical Engineering Jan - April 2014
(TEE)
타 Voltage and Power Quality Control in Wind Power Application by Dynamic
Compensation 타 Discrete Hidden Markov Model based Face Recognition System Introducing Sustainability of Uneven Lighting Distortion
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I take the privilege to present the hard copy compilation for the [Volume 4 Issue (1)] Trends in Electrical Engineering (TEE). The intension of TEE is to create an atmosphere that stimulates creativeness, research and growth in the area of Electrical Engineering The development and growth of the mankind is the consequence of brilliant Research done by eminent Scientists and Engineers in every field. TEE provides an outlet for Research findings and Reviews in areas of Electrical Engineering found to be relevant for National and International recent developments & research initiative. The aim and scope of the Journal is to provide an academic medium and an important reference for the advancement and dissemination of Research results that support high level learning, teaching and research in the domain of Electrical Engineering . Finally, I express my sincere gratitude and thanks to our Editorial/ Reviewer board and Authors for their continued support and invaluable contributions and suggestions in the form of authoring writeups/ reviewing and providing constructive comments for the advancement of the journals. With regards to their due continuous support and co-operation, we have been able to publish quality Research/Review findings for our customers base. I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.
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Trends in Electrical Engineering
Contents
1. Voltage and Power Quality Control in Wind Power Application by Dynamic Compensation R. Manikandan, S.P. Rajkumar
1
2. Discrete Hidden Markov Model based Face Recognition System Introducing Sustainability of Uneven Lighting Distortion Md. Rabiul Islam and Rizoan Toufiq
9
Trends in Electrical Engineering ISSN: 2321-4260 Volume 4, Issue 1 www.stmjournals.com
Discrete Hidden Markov Model based Face Recognition System Introducing Sustainability of Uneven Lighting Distortion Md. Rabiul Islam* and Rizoan Toufiq Department of Computer Science & Engineering, Rajshahi University of Engineering & Technology, Rajshahi-6204, Bangladesh
Abstract The aim of this work is to enhance the performance of appearance based face recognition system to remove the uneven lighting effect which is generally occurred in natural environment. Active Shape Model has been used to detect the facial shape and contrast based edge detection technique has been applied to reduce the uneven lighting problem. Linear Discriminant Analysis has been used to reduce the dimension of the facial feature vector. Discrete Hidden Markov Model has used for learning and testing model for create template for each human face and recognize those pattern. Extended Yale face database has used to measure the performance of the proposed face recognition system with the existence of various uneven lighting effects. Experimental results and performance analysis show superiority of the proposed system with different variations of light with the rate of change of azimuth and elevation.
Keywords: Face Recognition, Uneven Lighting Effect, Appearance based feature, Linear Discriminant Analysis, Discrete Hidden Markov Model
TEE(2014) Š STM Journals 2014. All Rights Reserved
Trends in Electrical Engineering ISSN: 2321-4260 Volume 4, Issue 1 www.stmjournals.com
Voltage and Power Quality Control in Wind Power Application by Dynamic Compensation R. Manikandan*, S.P. Rajkumar Department of EEE, Sri Ramakrishna Engineering College, Coimbatore, India Abstract Power quality problem is a critical problem in a power system. Most of the pollution problems created in power system is due to the nonlinear nature of loads. Due to large amount of non-linear equipment, impact and fluctuating loads (such as locomotive, arcfurnace, welding equipment, etc.); wind power as a rule, does not contribute to voltage regulation in grids. Also wind power very often is a source of voltage sag or swell. The power systems are often considered weak in that they possess relatively low short-circuit ratio, compared to a grid. Network voltage control becomes a challenging task as a result. The loads are also sensitive to short-duration disturbances in the form of voltage sags or swells. The use of STATCOM in improving voltage quality of isolating power systems is considered. The compensators are used to mitigate the effects of momentary voltage sags/swells.
Keywords: Sag, STATCOM, Power quality
TEE(2014)Š STM Journals 2014. All Rights Reserved