Detection Methods That Use Signal Processing And Interfere With Photovoltaic Array Systems Monitoring

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.

The PV module has been designed by considering the irradiance, temperature and number of PV cells connected in series and parallel. Figure 5.1 shows the simulink model of solar system. Here only function file used to show the solar system, the program code is given in the appendix. Here we are using a battery. The system is generated 240volt and current is 2.9 A.

Fig.3. shows algorithm for the proposed method. This algorithm uses voltage and current of the PV module. A permitted error of 0.06 as shown in (8) is used in modified algorithm to eliminate the steady state oscillation in the system. The permitted error is written as  I + V dI/dV   0.06 Using the permitted error of 0.06, the steady state error is approximately 0.7% based on the duty cycle step size of 0.005.

Similar to the previous work [17], the second ANN architecture design adopts the PV module short circuit(ISC) in Ampere,and the open circuit voltage (VOC) in Volts, as the inputs of the network and the PV generator output power (P) in Watt, as the output of the network. The data set stored in the data acquisition is trained until new patterns may be presented to them forprediction. Thus the trained data are compared to the experimental measurements, recorded during the characterization tests.

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

Currently solar power is beginning to expand horizontally throughout communities. This growth is creating a demand that is beginning to reduce the expense of purchasing and installing solar panels. The concept is catching on and the technology is improving as the demand increases.

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.

Fortunately, when it comes to warranties, Yes Solar Solutions has you covered. They offer a 25-year linear production warranty, standard module defect warranty of 12 years, 5-year workmanship warranty, 25-year manufacturer's warranty and an inverter warranty that is 10 years for the single string and 25 years for the micro-inverters.

Zhou, W., Yang, H.X., & Fang, Z.H. (2007) A Novel Modelfor Photovoltaic Array Performance Prediction, AppliedEnergy, 84, (12), pp. 1187–1198.

Recently, the price of unrenewable energy resource such as oil, coral and natural gas is increasing by time because of rare and more and more usage for individual and industries. Solar panels which use energy from Sun are considered as renewable energy through the form of solar radiation, UV. Solar technologies are broadly characterized as either passive solar or active solar depending on the way they

Solar cell or photovoltaic (PV) systems usually transformed energy from the sun in to electric current. It can be measured in terms of ‘‘conversion efficiency’’, the proportion of solar energy transformed to electricity. (Henderson, Conkling, & Roberts, 2007) Sunpower primarily focused on the production of solar cell. But by moving in to wafer manufacturing it soon incorporated in to manufacturing of solar power module units. In general Sunpower manufacturing process needed approximately two times as many steps as the usual solar manufacturing process need and many of these steps were distinctive to Sunpower. Sunpower has nearly 15 -20 established cell manufactures, a handful of silicon – based cell manufacturing upstarts and a number of thin film solar companies offering potentially unsettling technologies.

Photovoltaic cells, are used in buildings in the way of photovoltaic panels also known as “Solar PV Panels” to provide and deliver electricity directly into the building. They are often being mixed up with “Solar Thermal Panels”, as they are both put on the roofs of the buildings and look very similar, however they provide

It can be obtained doing multiple measurements of the power output of the solar cell for various load resistances. By doing so, the Isc and the Voc can be obtained when the resistance tends to zero and when the resistance tends to infinity respectively. Furthermore, using this method the optimal operation point known as the maximum power point (mpp) can also be found and consequently the current at the maximum power point (Impp) and the voltage at the maximum power point (Vmpp). In figure 2.2 an example of an IV curve with its most important features is

In general, solar PV module voltage is low, ranging from 30-60V DC. To meet the demand of AC loads, there is a need for inversion as well as a voltage boosting, whereas voltage boosting is dependent on parameters like module voltage, the number of modules, and their connection [7-9]. Thus, it is clear that PCS must have following functionalities, such as voltage boosting (optional), MPPT Tracking and inversion. The voltage boosting stage can be provided by either step-up dc-dc converter or transformer followed by an inverter [10-13]. But placing the transformer to raise the voltage level is not a good solution as it increases the cost, size, and volume of the overall system. Moreover, it lowers the efficiency of the system. Hence transformerless topologies received lot of attention in past few years [9]. Two types of transformerless solutions are suggested in the literature for solar PV power generations, namely a) multi-stage power conversion and b) single stage power conversion [23-24]. Whether it is single stage or multiple stage power conversion the most critical part of a solar PV system is the inverter, which will be discussed in next sections. At present, inverters are the essential cause of breakdown of huge scale PV systems [12]. Moreover, in addition to the quality problems, inverters give restricted power efficiency [7]. Normally, inverter efficiency is around 94% and as the load diminishes the efficiency can

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.