A Strong Feedback Linearizing Stabilization Scheme For A Three Phase Grid Connected Photovoltaic

Since when it was determined that electricity could be generated from the sun, the power industry has taken slack for not considering it as a viable addition to their generation fleet. However, there are two facts that need to be remembered with respect to the power industry. The first thing to remember is that power has to be supplied to their customers regardless of the weather or the time of day. Secondly, power companies are just like any other company; they are in the business of making money. Because of those two facts, solar energy at its current technological state has no place in the power industry’s current generation fleet.

Fig. 9(a) shows the DC-link voltage across the DC-link capacitor of the PV array. The DC-link reference voltage corresponds to maximum power point of the PV array. Fig. 9(b) shows the power demand by the load, and power flows from the grid and PV system generated power. As the PV system generated power could not meet complete power demand of load, remainining power is supplied by the grid. At 1secocond the PV system switched from partially shaded condition to uniform solar insolation. Thus, at this point power supplied by the inverter and grid also varies. Fig. 10(a) shows the grid current which is fully sinusoidal. Fig. 10(b) shows the inverter output current. Fig. 11 shows the performance of system under reactive load condition. In this study, a 500VA reactive load is considered. The figure shows the complete reactive power is supplied by the inverter. Thus the power factor of the system is maintained nearly at

A solar photovoltaic power system is a technology that converts the energy from sunlight into electrical energy. Residential solar photovoltaic systems can offset much of a household's power needs, depending on the size of the system and the household's needs. The output power from is directly proportional to power received from the sun, which varies throughout the day and year. The rated maximum output of the module might be achieved only occasionally, depending on actual site conditions. It is a renewable source of energy that is sustainable and totally inexhaustible. Solar energy is also a non-polluting source of energy that doesn’t emit any greenhouse gases when producing electricity.

Commonly, renewable energy is defined as energy which is able to be captured from existing natural resources that are replenished rapidly, such as flowing water, sunshine, wind, geothermal heat flows and ocean [2]. Renewable energy technologies are required to provide technologies to use one or several renewable energy resources. There are some different types of renewable energy technologies, which include solar energy, bioenergy, hydropower, wind energy, geothermal energy and tidal energy. This thesis project will focus on the solar photovoltaic which is currently one of types of solar energy technologies, and this technology using photovoltaic cells to converts sunlight directly into electricity.Solar photovoltaic system can generate electricity from sunlight through using PV modules, and the system can be integrated into building designs, installed on rooftops, or large scale power plant. With the development of photovoltaic technologies, solar photovoltaic capacity has been increased from 3.7 GW (2004) to 177GW (2014) [3]. Figure 2 shows this change from 2004 to 2014, there is a big trend of increase in these years. The increase of PV capacity can reduce the carbon emission and provides more job opportunities. It also helps to reduce air pollution and make a friendly environment for living. One of the common PV system is

It is one of the cleanest sources without any emission of harmful gases and is in a great demand today. When these are converted to electricity for commercial as well as residential uses, there are no effects on the environment, no air pollution, noise pollution or any wastes. These can play a very important role in reducing greenhouse gas emissions by replacing coal-powered energy sources with clean, renewable solar technologies which improve air quality and lessen the harmful impacts that contribute to climate change. Residential solar gives the advantage of energy independence, fuel diversity, improved power reliability, increased price stability and reduced need to build more expensive and polluting electric power generation plants. The benefits of this are energy independence, protection against rising electrical rates, sound financial investment, reduce pollution and dependence on foreign oil. These benefits extend well and eliminate exposure to increasing energy costs and Solar power provides energy security. Photovoltaic (PV) power systems convert sunlight directly into electricity and enables homeowner to generate some or all of their daily electrical energy demand on their own roof, exchanging daytime excess power for future energy needs. It can plan an important role in providing an alternative source of electricity, energy, and back-up power for homes, offices, commercial and industrial buildings. Those who are putting solar on their homes, businesses or other buildings are making a

From hydro and wind power solar photovoltaic forms the third most important form of renewable energy source that is used in countries more than 100 considering a global installed capacity. The photovoltaic installations can be achieved in

increased due to the limited amount of available oil. Global warming is considered as a byproduct

Solar energy is experiencing a boom like no other. This year, it is forecasted to grow at an astonishing 119%, significantly higher than last year’s already impressive 17%. At the same time, expectations are for 14.5 gigawatts of solar power to be installed and surpass all others sources of new energy.

“Today, the industry’s production of PV modules is growing at approximately 25 percent annually, and major programs in the U.S., Japan and Europe are rapidly accelerating the implementation of PV systems on buildings and interconnection to utility networks.” (Florida Solar Energy Center, 2007)

The sun is the main source of energy on earth, providing the planet with radiant energy which is transformed once it reaches every substance on the planet into a different kind of energy, making the wind blow, the seas flow and all atoms move. The energy in the Wind and sea have been used for centuries and nowadays thanks to the photovoltaic effect, a part of this vast energy can be harnessed and directly transformed into a more usable way of energy, electricity.

Solar energy may define as the energy received by the earth from the sun. This solar energy is in the form of solar radiation. With the help of solar cells, solar radiation can convert into electricity. Sun is a highly powerful energy source, humans and natures are directly depending on the sun. For example in hydro-electricity the solar energy needed for the evaporation of water after that it returns to earth as rain and provides water in dams. In biomass, the solar energy used that process. Solar cells directly converted solar radiation into electricity, during the process time there is no noise or pollution are there. These cells made with some semiconducting materials. If use solar cells in our home it will help to reduce the greenhouse gas emission, minimise the percentage of carbon dioxide in our atmosphere and mainly reduce the necessity of fossil fuels and natural gas use to produce electricity. According to the Ben Sorensen, solar energy is one of a good source of substitute energy, for the reason that it is renewable, economical and does not pollute our environment. Thus, this essay will be divided into three parts. Firstly, we will talk about fossil fuels and its demerits. Secondly, we will look at the issues and implications of solar energy. Finally, we will focus on the advantageous and disadvantageous of solar energy respectively.

The choice of right type of converters for the different requirement in specific application has great influence on the optimum performance of the photovoltaic system. In last two decades, enormous developments have been taken place in the area of solar PV power generation. A large number of research publications in these areas have led to this persuasion of a critical review of the available literature. In particular, many inverter topologies have been introduced to incorporate several unique features, such as a) intrinsic boost capabilities, b) isolation, c) high efficiency, d) good power decoupling, e) dual grounding function, f) single stage solar power conversion capabilities, g) compact design and h) good power quality, for both

Solar tracking system uses two DC motors to rotate the solar panel in two axes. The position of the sun is adjusted by using four LDR as a tracking sensor, the out from sensors are converted from analog form to digital form by using four ADC0804 ICs. The digital out from sensors will in to the intelligent controller that implemented on FPGA card and the output from the controller

Abstract: DC microgrid is the high quality electric power system focused on the development of renewable energy resources. The dc distribution system is connected to AC grid, Photovoltaic system and synchronous generator. Moreover, the power is transmitted through dc distribution line and is converted to required AC or DC voltages by load side converters. Those converters do not require transformers by choosing proper DC distribution voltage. The DC power line is 400V. This distributed design of load side converters also contributes to provide supplying high quality power. In this research, the configuration of DC microgrid system, control methods of distributed generation will be presented. Moreover, stand-alone system and grid connected system of DC microgrid will also be expressed. The model of DC microgrid system will be constructed with MATLAB/SIMULINK. Simulation results will be described.

Abstract: The current energy situation with fossil fuels as the main source of the world’s energy has two main flaws: fossil fuels contribute to global warming via the greenhouse effect and they are limited in the quantity that remains. Solar power solves both of these problems and can be captured by utilizing photovoltaic cells. However, photovoltaic cells have their own drawbacks due to their high costs of installation and maintenance.