Solar electricity system and represents the direction of development in the 21st century energy technologies more attractive to use. PA3468U-1ACA PA3097U-1ACA In the context of global photovoltaic solar cells can significantly increase production capacity at the same time, solar energy photovoltaic power generation to accelerate the pace of development year after year. EPIA, according to statistics, the late 20th century, solar photovoltaic production capacity of electricity has increased every year trend began to emerge.

The 21st century, the Global Production of photovoltaic solar energy and increase network capacity by 44.1 years, increased from 2000 to 287MW in 2008 12.95GW, average annual growth of 60.99 percent, 72.67 years per cent growth year in 2007. The global production of photovoltaic solar energy and the total cumulative net increase of 10.5 times from 2000 to 1.435GW increased to 2008 16.4GW, an annual growth rate average of 35.6%, 60.78 years % growth per year in 2007 and projected 2010 global scale combined is nearly 30GW.

In recent years, grid-connected photovoltaic capacity installed primarily in three countries: Japan, Germany and the United States, mainly for PV in these countries are more favorable policies, but in recent years, d other countries like Spain, Korea, Portugal and other countries have successively published a series of policies to encourage solar photovoltaic applications. PA3396U-1ACA PA3467U-1ACA PA3282U-1ACA

In recent years, with solar photovoltaic power generation, the pace of development accelerates, the developed countries to emerging trends and network capacity growth of more and more apparent. With the cost reduction of PV power generation costs and increase energy, one day, the cost of the cost of photovoltaic electricity will be fairly traditional. At that time, the photovoltaic enter the stage of commercial demand.

The EU has become a global network of solar photovoltaics connected dominant region, the future of the world’s leading grid solar photovoltaics connected to development. Can be predicted, the European Union production of photovoltaic solar energy will have a large scale in 2010-2020 and gradually the energy market dominance, .2020-2030 years, close to the price of peak electricity market In the years 2020-2040 the average price close to the electricity market.

2 systems connected to the principle of power generation and composition ofPA3083U-1ACA PA3282U-2ACA

Through solar cells (also known as photovoltaic cells) to solar radiation is converted to electrical energy production known as the cell system for solar energy (also known as solar photovoltaic systems ). Solar energy is solar energy directly into the methods of conversion of electrical energy, including photovoltaic, photochemical production, detection optical output power. Solar photovoltaic system to produce energy using photovoltaic solar cells convert sunlight directly into an electric energy radiation is a new generation system. Solar photovoltaic ground modes of operation of power generation system can be divided into off-network operation and networking to run two major categories.

Energy conversion devices for solar photovoltaic cells, also called photovoltaic cells. Photovoltaic cells on the base unit system, which is a unique string of solar cells, and packaged in components, as required by the system, solar cells, then the series and in parallel and installed in the portion of constitute a solar generator (PV Array). In photovoltaic cells on both sides leads to electrodes, and connected to the load, then outside the circuit, current flows through the brilliance of Health to obtain the output power, so as to cells Solar convert solar energy directly into electrical energy. PV system energy production is the use of photovoltaic cells that convert sunlight into electrical energy and the matrix stored on the F3172A PB995A 338794-001 battery system or used directly for the cost of renewable energy installations. The operating principle is: the day, consisting of photovoltaic cells to receive the sunlight is converted into electrical energy, part of the supply or alternating current workload, another part of the electricity excess can be anti-anti-LED battery charge at night or on rainy days, components of photovoltaic cells can not operate, battery or AC to DC load of work.

Systems photovoltaic power generation, including photovoltaic panels is generally devices DC-DC conversion, storage devices, device output power conversion, the controller 5 majority, shown in Figure 1.

(1) solar panels: Photovoltaic solar panels are the basic unit of the system, when all the lights when the battery, the battery absorbs light energy and produce the photovoltaic solar energy into DC may be.

(2) Solar Controller: Due to an array of photovoltaic cells have a strong nonlinear characteristic in order to ensure the array of photovoltaic cells in the light of day and the temperature is always the maximum power output corresponding generally the introduction of point photovoltaic maximum power tracking (MPPT-Maximum Power Point Tracking) control. Inspiron 1420 battery Inspiron 5100 battery

(3) Devices for DC-DC conversion: through the circuit devices power control in hand and turn up, will the network output of photovoltaic cells in a hollow high voltage direct current, DC voltage step – up for the DC-AC inverter to create the preconditions to be able to ensure that a wide range of variation of voltage DC input, output stability under high voltage direct current, while the point maximum power tracking control functions.

(4) Inverter: The inverter is part of photovoltaic panels and batteries to provide a low voltage DC into 220 volts AC reverse supply AC load to use.

(5) devices for energy storage: batteries are generally provided by a number of lead-acid batteries throughout the series and in parallel with his ability should be chosen with photovoltaic cells to match the capacity of the table . The main role of this part of the array of photovoltaic cells is sent directly to the shop in DC for charging to use. Inspiron 5150 battery Inspiron 700m battery

At present the system of solar photovoltaic power generation can be divided into three categories, off-grid photovoltaic power systems, storage systems connected to PV, and the first two hybrid systems. Solar cell’s electrical system and energy production is the use of the theory of the photovoltaic effect is made, it is the direct conversion of solar energy into electrical energy system generating electricity. It is the main square by the solar cells and inverters from both sides.

The solar system of energy production through solar energy into electricity without energy storage battery, inverter grid-connected directly into the grid provided. Home grid-connected PV system, the principle illustrated in Figure 2, it is sunny during the day when the sun solar panels resulting from the dc / ac inverter for the equipment after use. The generation of electricity consumption of electricity than facilities, the remaining energy will be against the current commercial network feeding power companies to buy (not yet implemented this system in China). Even in cloudy or rainy days, depending on how much sunlight can also generate electricity. However, the hair does not meet the power consumption of the installation, the absence of partially purchased from the utility. Unable to generate electricity at night, when facilities for electricity utilities to buy. Inspiron 8500 battery Inspiron 8600 battery

1. Solar cell module

The solar cell is a single device that can generate electricity, equivalent to about a 0.5 V battery voltage and battery components are the equivalent of a number of cells per series / shape parallel battery. The number of components of the composition of the solar cell is usually the system voltage (battery voltage) to decide, usually voltage component is 1.4-1.5 times the battery voltage. For example: battery voltage is 12V, the components of operating voltage is generally between 16.8-18V, while the number of cells 18v/0.5v number was 36. Therefore, the number of 36 or 40 commonly used components of high power 72.

After the combination may be encapsulated in a separate power supply for use as components of the solar cell with a certain amount of corrosion, wind, hail, rain capacity, widely used in various areas and systems. When applications require a higher voltage and current while the individual components can not meet the requirements, may consist of several components in solar cells up to get the required voltage and current. Inspiron 9200 battery Inspiron B120 battery

2. Solar Inverter

Solar inverter is a power electronic circuit, solar panels can convert direct current into alternating current to operate appliances, lighting and power tools, the burden of communication throughout the solar system, a critical. Variable depending on mode of operation can be divided into stand-alone inverter and grid-connected inverter. Stand-alone inverter for stand-alone system of solar energy as a load independent. Grid-connected inverter for grid-run system, solar electricity will be injected in the network issued. Inverter waveform output can be divided by the square wave inverter and sine wave inverter.

Inverter has two functions: one is to complete the DC / AC power converter connected to the grid, the other is to identify the best operating point to optimize the efficiency of solar photovoltaic systems. For a given solar radiation, temperature and type of Sony VGP-BPS8 Sony VGP-BPS8A battery, solar photovoltaic systems have a voltage corresponding unique optimal and current, so that the largest photovoltaic system to generate energy.