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. 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.
All the power used in the building is generated from the windmill and photovoltaic sources. The roofing of the building comprises of a 27 kW array with three types of solar panels. To ensure zero interruption of electrical energy to the facility, a hybrid backup battery system has been incorporated.
Zhou, W., Yang, H.X., & Fang, Z.H. (2008) Battery Behaviour Prediction and Battery Working States Analysis of a Hybrid SolarWind Power Generation System, Renewable Energy, 33, (6), pp. 1413–1423.
As one may know in order to use solar energy, one has to have access to sunlight. Even though one see the light of day, the sun will not always be out when you need it. In Source B it states, “solar power is not a constant source of energy.” Eventually when six o’clock comes around in the afternoon, the sun will set and later on the moon will appear in the night sky. This means that once the sun sets one won’t people able to do their daily chores because their solar panels on the roof isn't providing any electricity in the house.
Mathematically, reliability is the probability that a device would perform its required function for a specified period of time under the stated operational conditions. The
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
The statistical table of photovoltaic power generation in Golmud area was reported by the power company of Qinghai province in March, 2012: there are several photovoltaic power station generating capacity was even zero in the first two months. Apparently, systems of parts of stations had the design problems, such as no stability control device; lack of power forecasting or signal impassability; the insulation does not meet the requirements.
For the energy-as-a-service model, the solar pv system is designed to terminate or lock out electricity usage at the end of a particular period. It could be weekly or monthly, therefore customers will have to pay to access the electricity by recharging the solar pv system. Customers are allowed to acquire the system at a fraction of its full price. its
Solar irradiance is the main influence factor that affecting the power output of a PV plant, the accurate forecasting of irradiance is of great importance for step-wise PV power forecasting. Affected by the micro-meteorological environment of PV power plant, solar irradiance data series contains both stable, periodic part and fluctuant, random part. The former part daily changed with time and is more obvious on sunny days, while the latter part is mainly affected by meteorological factors such as cloud movement or showers. The proportion of the two parts also varies with different weather conditions. In cloudy or rainy days, the variability of original data series increases
• Solar charge controller – It regulates the voltage and current coming from the solar panels going to battery and prevents battery overcharging and increases the battery life.
The total capacity of generating electric comes from the power plants of the SEC. In 2008, the total power generated capacity available during peak load was around 39.2 thousand MW, which was around 30.3 thousand MW in 2004. In 2014, the total generating capacity available during peak load was over than 56 thousand MW. The estimation of an average annual growth rate is around 7 %.
The Indian solar PV market has seen significant growth with the installed solar PV capacity, rising from 40 MW to more than 3,000 MW in the last four years. It is also expected that the distributed generation (rooftop Solar PV) at the consumer end will drive solar power capacity additions given the acute power shortages in several states.