trends in electrical engineering (vol4, issue1)
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Electrical Engineering
Trends in
www.stmjournals.com STM JOURNALSScientific Technical Medical
Ÿ Voltage and Power Quality Control in Wind Power Application by Dynamic
Compensation
Ÿ Discrete Hidden Markov Model based Face Recognition System Introducing
Sustainability of Uneven Lighting Distortion
(TEE)Jan - April 2014
ISSN: 2321-4260
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(ISSN: 2321– 4260)
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Editorial Board
Dr. Rajesh KumarAssociate Professor
Department of Electrical Engineering MNIT, India.Presently Post Doctorate Research Fellow
National University Singapore
Prof. Uwe KrugerThe Petroleum Institute,
Abu Dhabi United Arab Emirates, United Arab Emirates
Dr. Yang Han Department of Power Electronics,
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and Technology of China, P. R. China.
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Dr. Chandra Prakash GuptaAssist. Prof., Department of Electrical
Engineering, Indian Institute of Technology, Roorkee-247667, India.
Dr. Ali M. EltamalyAssociate Professor
Electrical Engineering Department college of Engineering, King
Saud University, Saudi Arabia.
Vineeta Agarwal Professor, Department of Electrical
Engineering, MNNIT Allahabad, India.
Dr. Yog Raj SoodProfessor, Electrical Engineering Department in NIT, H.P., India
Ashok S Department of Electrical Engineering,
National Institute of Technology, Calicut, India.
Dr. Bidyadhar SubudhiProf. & Head, Electrical Engg. & Prof-
in-Charge, Centre for Industrial Electronics & Robotics, Dept. of Electrical Engg.
National Institute of Tech., Rourkela, India.
Dr. Mahendra LalwaniAssoc. Prof., Pinkcity Engineering
College & Research Center, Jaipur, India.
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 .
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their continued support and invaluable contributions and suggestions in the form of authoring write-
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Dr. Archana Mehrotra
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STM JOURNALS
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
ContentsTrends in Electrical Engineering
TEE(2014) © STM Journals 2014. All Rights Reserved
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)© 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, arc-
furnace, 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