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


Volume 9 Issue 4 April - June 2016

Research Paper

A New Maximum Power Point Tracking Control Technique of Solar Photovoltaic Water Pumping System

Amine Daoud*
Associate Professor, Department of Electronics, Faculty of Electrical Engineering, University of Sciences and Technology of Oran, Algeria.
Daoud, A. (2016). A New Maximum Power Point Tracking Control Technique of Solar Photovoltaic Water Pumping System. i-manager’s Journal on Electrical Engineering, 9(4), 1-11. https://doi.org/10.26634/jee.9.4.6034

Abstract

Recently, the importance of photovoltaic systems in the generation of electricity has attracted much attention because of their electrical energy production close to where it is required, no greenhouse gas emission, low maintenance cost, and no noise. However, the promotion of photovoltaic system has been limited by two problems, low conversion rate and maximum power point varying with atmospheric conditions (irradiance, temperature and air mass). Hence, one of the most economical ways to improve utilization efficiency of a photovoltaic system is to ensure that it is always operates at its maximum power point irrespective of the environmental conditions. Thus, it becomes necessary to use MPPT controller in order to ensure the efficient operation of the photovoltaic system. Within this overall context, the present paper focuses specifically on the development of new Maximum Power Point Tracking (MPPT) technique used in Photovoltaic (PV) water pumping systems. Furthermore, using this technique, only the input voltage of a PV array needs to be sensed in order to find and track the MPP. The system under study consists of a PV array, a DC-DC buck-boost converter, a DC motor-pump and an MPPT controller. This pumping system is fully modeled and simulated in MATLAB environment. Analytical models for determining PV array output power, motor-pump flow rate and shaft speed are detailed and explained. The simulation results demonstrate that the proposed MPPT technique can track the MPP perfectly.

Research Paper

Comparison of Methods of MPPT in Solar PV System

D. Jagadeesh* , T. Nageswara Prasad**
* Postgraduate, Department of Electrical and Electronics Engineering, Sree Vidyanikethan Engineering College, Tirupati, India.
** Professor, Department of Electrical and Electronics Engineering, Sree Vidyanikethan Engineering College, Tirupati, India.
Jagadeesh, D., and Prasad, T. N. (2016). Comparison of Methods of MPPT in Solar PV System. i-manager’s Journal on Electrical Engineering, 9(4), 12-19. https://doi.org/10.26634/jee.9.4.6035

Abstract

In this paper, the Maximum Power Point Tracking (MPPT) of a solar Photovoltaic (PV) system under Partial Shaded Conditions (PSC) is developed using biologically inspired algorithms. The proposed methods are compared with a conventional technique viz., incremental conductance method under partial shaded conditions. The major advantages of the proposed methods are speed of convergence, accuracy in tracking and low power oscillations. The drawback associated with conventional techniques is falling at local MPP instead of global MPP. The improved performance of the proposed method is validated through MATLAB coding in terms of tracking speed, accuracy and power oscillations.

Research Paper

STATCOM with d-q Decoupled Control for Wind Energy Conversion Systems

G. Muni Reddy* , T. Gowri manohar**, V. Jyothsna Priya***
* Research Scholar, Department of Electrical and Electronics Engineering, S.V University, Tirupati, Andhra Pradesh, India.
** Professor, Department of Electrical and Electronics Engineering, S.V University, Tirupati, Andhra Pradesh, India.
*** Assistant Professor, Department of Electrical and Electronics Engineering, SKIT, Srikalahasti, Andhra Pradesh, India.
Reddy, GM., Manohar, T.G., and Priya, V. J. (2016). Statcom with d-q Decoupled Control for Wind Energy Conversion Systems. i-manager’s Journal on Electrical Engineering, 9(4), 20-28. https://doi.org/10.26634/jee.9.4.6036

Abstract

The electric power generation from renewable energy sources like wind energy has increased in recent years due to environmental problems and the shortage of conventional energy sources in the near future. More and more wind farms are being integrated into power system grid. Integration of large scale of wind farms into power system presents challenges such as voltage and reactive power control, frequency control, grid stability and power quality. This paper demonstrates the power quality problems due to integration of wind turbine with the grid. In this proposed scheme, STATic COMpensator (STATCOM), with decoupled control of d and q current components, is connected at a point of common coupling with a battery energy storage system to reduce the effect of power quality issues. The STATCOM with decoupled control of d and q current components control scheme is employed for the grid connected wind energy conversion system is simulated using MATLAB/SIMULINK. The effectiveness of the decoupled control of d and q current components control scheme is, it takes care of the reactive power requirement of the load and the induction generator and thus improving the source side power factor and there will be a marked reduction in the Total Harmonic Distortion.

Research Paper

Effect of Automation Intensity Levels on Distribution System Reliability

V. S. S. Sailaja*
* Associate Professor, Department of Electrical and Electronics Engineering, Vasavi College of Engineering, Hyderabad, India.
** Professor, Department of Electrical Engineering, University College of Engineering, Osmania University, Hyderabad, India.
Sailaja, V.S.S.,and Prasad, P.V.N. (2016). Effect of Automation Intensity Levels on Distribution System Reliability. i-manager’s Journal on Electrical Engineering, 9(4), 29-36. https://doi.org/10.26634/jee.9.4.6039

Abstract

Electric power distribution systems are responsible for delivering the electrical energy from the bulk power systems to the customers. Radial operation, aging infrastructures, poor design and operation practices and high exposure to environmental conditions have caused the electric power distribution systems as the main contributor to the system reliability problems. Generally, about 80 to 90 percents of the customer reliability problems originate from the electric power distribution systems. In this paper, the effect of two automation intensity levels on the reliability of radial distribution system is compared with system without automation. Partial automation and complete automation are considered. The effects of automation intensity levels on the outage time of the components considering the sequence of fault diagnosis activities that will take place from the initiation of fault to the service restoration and the reliability of the system is measured in terms of SAIDI, CAIDI, SAIFI and ENS. These reliability indices are calculated for the Roy Billinton Test System (RBTS) Bus2 using Failure Modes and Effects Analysis technique.

Research Paper

Implementation of Perturb and Observe (P&O) Method to Track the Maximum Power Point Using Buck Converter

Bal Mukund Sharma* , Kuldeep Sahay**
* Research Scholar, Department of Electrical Engineering, Dr. A.P.J. Abdul Kalam Technical University, (Formerly UPTU), Lucknow, India.
** Professor, Department of Electrical Engineering, Institute of Engineering and Technology, Lucknow, India.
Sharma, B.M., and Sahay, K. (2016). Implementation of Perturb and Observe (P&O) Method to Track the Maximum Power Point Using Buck Converter. i-manager’s Journal on Electrical Engineering, 9(4), 37-46. https://doi.org/10.26634/jee.9.4.6038

Abstract

This study presents a new kind of Maximum Power Point Tracking algorithm based on perturb and observe algorithm. A generalized photovoltaic array simulation model in Matlab/Simulink environment is developed and presented in this paper. The model includes PV module and array for easy use on simulation platform. The proposed model is designed with a user-friendly icon and a dialog box like simulink block libraries. Considering the effect of solar irradiance and temperature changes, the output current and voltage of PV modules are simulated and optimized using this model. A perturb and observe algorithm based maximum power point tracker is also developed using the presented model in Matlab/Simulink. It can successfully track the maximum power point more accurately and quicker than other conventional method based controller in these situations. The general model was implemented on Matlab scrip file, and accepts irradiance and temperature as variable parameters and outputs the I-V characteristic. A particular typical 800W solar panel was used for model evaluation and results.

Review Paper

A Review on Novel Hybrid Approximate Method Using Firefly, Wavelet, Algorithm and Day Ahead Power Cost Forecasting

Mukh Raj Yadav* , Kishan Bhushan Sahay**
* PG Scholar, Department of Electrical Engineering, MMMUT, Gorakhpur, India.
** Assistant Professor, Department of Electrical Engineering, MMMUT, Gorakhpur, India.
Yadav, M.R.,and Sahay, K.B. (2016). A Review on Novel Hybrid Approximate Method Using Firefly, Wavelet, Algorithm and Day Ahead Power Cost Forecasting. i-manager’s Journal on Electrical Engineering, 9(4), 47-54. https://doi.org/10.26634/jee.9.4.6037

Abstract

This paper shows a novel half and half insightful calculation using an information sifting method taking into account Wavelet Transform (WT), a streamlining method with Fuzzy Firefly (FF) calculation. Furthermore, a delicate registering model taking into account Fuzzy ARTMAP (FA) system, keeping in mind the end goal to conjecture day-ahead power costs in the Ontario market. An extensive near examination with other delicate registering and cross breed models demonstrate a noteworthy change in conjecture mistake about maximum 40% for every day and monthly cost gauges, by utilization of an expected cross breed model. Besides, minimum code acquired to estimate the Mean Square Error (MSE) and mean supreme blunder shows maximum level of exactness to the expected model. Vigor to the expected crossover wise models are determined by utilizing factual list (blunder change). Also, the great figure execution and the fast versatility of the proposed half and half model are likewise assessed utilizing the PJM market information.