i-manager's Journal on Electrical Engineering (JEE)


Volume 8 Issue 1 July - September 2014

Article

Looking beyond a Future without Fossil Fuel

Vijula Suresh*
PG Teacher, Sacred Heart Matriculation Higher Secondary School, Church Park, Chennai, Tamil Nadu.
Suresh, V. (2014). Looking Beyond a Future Without Fossil Fuel. i-manager’s Journal on Electrical Engineering, 8(1), 1-10. https://doi.org/10.26634/jee.8.1.2993

Abstract

Depleting Natural Energy resources with its huge environmental hazards has forced scientists to search for a perfect alternative energy that can substitute this conventional power sources like Coal and Petrol. Although alternative fuels have certain disadvantages, in the near future, they will emerge as a force to reckon with, in meeting the world's energy shortage and thus replacing oil and gas. This paper deals with different sources of energy like Bio ,Solar, Wind, Nuclear, Hydrogen, Algae, Silk and Human energy. The paper also examines the benefits, the setbacks and cost effectiveness of all these forms of energy, the countries involved in making and the effect of the alternated fuels which are reducing our carbon footprint and arresting climate change.

Research Paper

Modelling and Detection of Bearing Fault in PWM Inverter Fed Induction Motor Drives

Dr. Khadim* , Kuldeep Sahay**, V. K. Giri***
*-** Electrical Engineering Department, Institute of Engineering & Technology, Lucknow, India.
*** Electrical Engineering Department, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
Siddiqui, K. M., Sahay, K. and Giri, V. K. (2014). Modelling and Detection of Bearing Fault in PWM Inverter Fed Induction Motor Drives. i-manager’s Journal on Electrical Engineering, 8(1), 11-24. https://doi.org/10.26634/jee.8.1.2995

Abstract

Induction Motor (IM) with electronic inverters presents greater advantages on cost and energy efficiency as compared with other industrial solutions for varying speed applications. These inverter fed-motors are recently gathering great recognition for Multi-Megawatt industrial drive applications. In this paper, a dynamic simulation model of PWM inverter fed IM has been presented and analyzed. The model has been developed in the recent MATLAB/Simulink environment to analyze the transient behaviour of IM in healthy and faulty condition of bearing. The dynamic simulation of IM is one of the key steps in the validation of the design process of the motor-drive system. It is extremely needed with the priority for eliminating the probable faults beforehand due to inadvertent design mistakes and changes during the operation. The model gives encouraging results with reduced harmonics[1]. In the present work, a successful diagnosis of bearing faults of an IM in transient condition has been carried out. Therefore, an early detection of bearing fault is possible by this model and may avoid the motor to reach in the catastrophic conditions. Consequently, this technique may save millions of dollars for industries. Further, the time domain analysis has been carried out for bearing fault detection purpose.

Research Paper

Reduced Rule FLC for Sensorless Control of Induction Motor Drive

Mohammad Haseeb Khan* , Arshia Azam**
* Professor, Electrical and Electronics Department, Muffakham Jah College of Engineering and Technology, Hyderabad, Telangana, India.
** Professor, Electronics and Communication Department, Muffakham Jah College of Engineering and Technology, Hyderabad, Telangana, India.
Khan, M. H., and Azam, A. (2014). Reduced Rule FLC for Sensorless Control of Induction Motor Drive. i-manager’s Journal on Electrical Engineering , 8(1), 25-30. https://doi.org/10.26634/jee.8.1.2996

Abstract

This paper presents a novel method of reducing fuzzy rules present in a fuzzy logic controller. The proposed Reduced Rule Fuzzy Logic Controller (RRFLC) is used in Model Referencing Adaptive System (MRAS) based sensorless control of induction motor drive. To improve the performance of any fuzzy logic controller, it is required to increase the number of rules present in the rule base of FLC. This increases the computational memory and computational time required for processing, there by slowing down the response of the process or plant under control, induction motor in the present case. Hence, in this paper, a novel method of reducing rules using Equilibrium value is proposed in which the number of rules are reduced from 49 to 16 and at the same time the performance of the induction motor remains similar to that of large rules with a reduction of speed of induction motor by 2 rpm. Simulations results are presented and analyzed to show the effectiveness of the proposed method.

Research Paper

Voltage Sag/Swell Compensation Using Dynamic Voltage Restorer Based on Super Capacitor

K. Venkateswarlu* , B. Ashwin Kumar**, E. Venkatesh***
*-*** Assistant Professor, Department of EEE, Sri Indu College of Engineering & Technology, Hyderabad, India
Venkateswarlu, K., Kumar, B. A., and Venkatesh, E. (2014). Voltage Sag/Swell Compensation Using Dynamic Voltage Restorer Based on Super Capacitor. i-manager’s Journal on Electrical Engineering , 8(1), 31-38. https://doi.org/10.26634/jee.8.1.2997

Abstract

To mitigate disturbances at the load end, one of the custom power devices such as Dynamic Voltage Restorer (DVR) with super capacitor is used. The super capacitor as an energy storage is to supply real power to the inverter during the disturbances. The operation of the DVR depends on the control strategy. The control strategy used in this paper is SRF theory and Proportional Integral (PI) controller technique is applied to the DVR. The performances of DVR with and without capacitor are evaluated. The simulations are carried out using MATLAB/SIMULINK software.

Review Paper

A Comprehensive Survey of Maximum Power Tracker Techniques for Photovoltaic System

Bal Mukund Sharma* , Kuldeep Sahay**
Sharma, B. M., and Sahay, K. (2014). A Comprehensive Survey of Maximum Power Tracker Techniques for Photovoltaic System. i-manager’s Journal on Electrical Engineering , 8(1), 39-55.
Sharma, B. M., and Sahay, K. (2014). A Comprehensive Survey of Maximum Power Tracker Techniques for Photovoltaic System. i-manager’s Journal on Electrical Engineering , 8(1), 39-55. https://doi.org/10.26634/jee.8.1.2998

Abstract

The different MPPT techniques for maximum power point tracking of Photo Voltaic (PV) arrays are discussed in detail in this paper. Maximum Power Point Tracking (MPPT) techniques are employed in PV systems to make full utilization of PV array output power which depends on solar irradiation and temperature. The peak power is reached with the help of a dc/dc converter by adjusting its duty cycle. The algorithm changes the duty cycle of the dc/dc converter to maximize the power output of the module and make it operate at the peak power point of the module. This paper should serve as a convenient reference for future work in PV power generation.