Ritesh Dash

Hybrid system for meeting global energy demand with solar PV and wind system

Wind and solar are considered as if the most beautiful form of non renewable source of energy for harvesting the electricity to meet the global energy demand. Off grid hybrid systems are more useful as compared to grid connected system for supplying the rural areas and grid isolated system. Both hybrid and conventional system can together increase the stability of the system and hence economical in terms of the devices and storing system. This paper will describe about the classification of hybrid system and their related technologies. The design of the hybrid system mainly depends upon the type of source, environment condition and the no. Of user to whom it gives supply. The power mismatching due to the solar cell also creates some problem for a standalone system but as far as the grid connected system is concerned it does not affect the stability of the system. Capacity of the hybrid system can be increased to a large extent by adding more and more numbers of batteries. A hommor based simulation is carried out to test the feasibility as well as the economic value of the system.

Environmental effect assessment on performance of solar PV panel

The objective of this research was to study the effect of different environmental factors on performance of solar photovoltaic panel. The photovoltaic solar power represents one of the most promising energy in the world. It is also the cleanest form of energy. But the implementation of a PV system has shown that their reliability and efficiency depend upon many factors. The output of solar PV system is mainly affected by different environmental factors like dust, color, irradiance, shading, etc. Because in all the cases, the output power and efficiency are more rather than affected condition. Here the number of experiment has been conducted to verify the change in i-v and p-v characteristics of the system. The experimental data were used to calculate the efficiency and power output of the system. The result shows that the output power and efficiency are affected by environmental factors.

Performance evaluation of photovoltaic system based on solar cell modelling

This paper describes about the solar photovoltaic cell and its different modelling phenomena. In solar cell modelling generally curve fitting is adopted to calculate or extract the parameter. However for better calculation of error it is not recommended to adopt the curve fitting. the objective behind this paper is to find a suitable optimization technique so that it can be applied to all other models for curve fittings. The reference parameter for evaluating the performance of the grid is taken from the data sheet provided by the manufacturer. two distinct point like zero current voltage point, maximum current voltage point has been chosen for evaluating the best performance. The simulation is performed with a commercially available multicrystalline solar PV cell for simplicity purpose and then it is compared with the reference PV characteristic to check the compatibility of the system. The paper has been organised with three parts, like the 1st part contain some basic part of solar cell modelling and followed by characteristics and model verification. Finally the parameters are extracted from the curve.

Control of active and reactive power of a three phase grid connected photovoltaic system

Electrical transmission system is a very complex structure. To provide quality power to the end user customer. It is required to control the power by avoiding the congestion effect. To meet the quality power distributed generation may be adopted at different location nearer to the load. This paper investigate the performance of a renewable energy based grid connected system through load voltage ride through capability. The main objective of the paper is to enhance the quality of power by implementing suitable control strategy.

Performance prediction of a grid interfaced PV system through Matlab modelling - part-II

This paper discuss the modelling of a solar photovoltaic grid interconnected system to predict the behaviour of system under different grid condition. Moreover the detail power quality control strategies are described with a simple solar photovoltaic circuit. Standard data are used to simulate the system under different solar insolation condition. Power conditioning circuits are described with all its associated features to predict the transient behaviour of the system under different loading and fault condition. The system has been simulated with Matlab. Different types of step size are used in the system to evaluate the transient present in the system.

Performance evaluation of a grid connected photovoltaic system based on solar cell modelling:-Part-II

This paper provide a brief idea about the modeling of solar photovoltaic grid connected system. As the grid is a highly nonlinear system so it requires highly efficient inverter so as to minimize total harmonic distortion. It is also required to find out the exact position where maximum power can be injected. Moreover the paper tries to explain the controlling method used for controlling the duty cycle of the system. The main objective of this paper is to provide a strong idea about the different effect of grid voltage and power flow when a renewable sources like solar PV is connected to the grid. The simulation is carried out with a matlab modeled circuit and different modeling scheme is used to compare its accuracy with other model. The first part of the paper will give a review on the PV structure and its control strategies mainly inner and outer control loop.

Hybrid System for Meeting Global Energy Demand

Wind and solar are considered as if the most beautiful form of non renewable source of energy for harvesting the electricity to meet the global energy demand. Off grid hybrid systems are more useful as compared to grid connected system for supplying the rural areas and grid isolated system. Both hybrid and conventional system can together increase the stability of the system and hence economical in terms of the devices and storing system. This paper will describe about the classification of hybrid system and their related technologies. The design of the hybrid system mainly depends upon the type of source, environment condition and the no. Of user to whom it gives supply. The power mismatching due to the solar cell also creates some problem for a standalone system but as far as the grid connected system is concerned it does not affect the stability of the system. Capacity of the hybrid system can be increased to a large extent by adding more and more numbers of batteries. A hommor based simulation is carried out to test the feasibility as well as the economic value of the system.

Performance analysis of a renewable grid interconnected system based on fuzzy logic

This paper presents a solar photovoltaic grid interconnected system based on a PI-Fuzzy logic controller. The inverter described in this paper is a single stage converter powered by a buck or boost converter for efficiently transforming the input dc source into grid side ac. to extract maximum amount of power from the dc source a MPPT and a charge controller is provided with P & O algorithm. After transferring all the required power, the surplus amount can be stored in the battery through the charge controller. Matlab simulink was adopted to realize the circuit and controller. Experimental result obtained from the simulation was presented which clearly indicates the adaptability and robustness of the controller.

Optimal design and feasibility study of renewable hybrid energy systems

Of the 1.24 billion people in the country, more than 450 million people do not have access to electricity as well as over 95,000 villages still remain dark after sunset. Even the electrified villages suffer power cuts of 15 hours or more on a daily basis. These problems compel us to resort to other energy sources that are inexhaustible. The paper proposes analysis and comparative study of Hybrid Renewable Electric System, especially Photovoltaic-Fuel cell hybrid system, Wind-Fuel cell hybrid system and Photovoltaic-Wind-Fuel Cell hybrid system with Hybrid Optimization Model for Electric Renewable (HOMER) software for distributed generation system. The model simulates all the above small power technologies in hybrid configurations to identify the optimum hybrid system with minimal cost for remote residential loads in the Sunderbans, India.

A study on the increasing in the performance of a solar photovoltaic cell during shading condition

This paper proposes a special type of converter with solar photovoltaic cell for extracting maximum amount of power from a variable source. The converter topology uses a special characteristics which enables it to extract maximum power from the source. Partial shading is a very critical problem which sometimes leads to permanent damage of the cell. This effect also reduces the system performance and efficiency.