The application of RLA battery in a PV System

The application of RLA battery in a PV System




China's vast and uneven population distribution, the East Middle West sparse, due to geographical environment and the economy is relatively backward and other factors, the relative lack of power in some areas, the national electricity grid can not cover, inability to concentrate power, or power quality and unstable, giving local economic development, improving people's lives caused by some obstacles. Especially in China's north and northwest is particularly prominent, and the urgent need for stable and reliable for use when the power system. Now a separate power supply systems used generators, solar systems, wind power systems, Wind system.

Generators to primary energy as a power source to promote the internal combustion engine, internal combustion engine drive generators, generators do magnetic field lines cutting campaign to generate electricity. The primary energy resources are getting scarcer, prices higher and higher, and the serious impact on the natural environment.

Solar systems, wind power systems, wind and solar systems to nature endless to the endless light, wind as an energy source, through a certain equipment can be used for installation into electrical energy, the energy of natural, environmental protection, fully embodies the energy-saving, environmental protection, love the idea of the earth. And such power can continue to supply the capacity needed to protect storage devices, storage devices currently used are mainly nickel-cadmium batteries, VRLA batteries. However, the cost of raw materials and the lack of other reasons, Ni-Cd batteries VRLA batteries gradually be replaced. Photovoltaic systems as an example below to describe VRLA batteries in photovoltaic system.



Solar System Introduction

1. PV system works:

In the light conditions are good cases, the solar module produce a certain electromotive force, formed by components of the series-parallel solar cell matrix, makes the square voltage to the system input voltage demands. Use part of the supply power system, partly by charge and discharge the battery charging controller, the conversion of light energy from the energy stored. In the light conditions fail, battery and through the power inverter to provide the electricity needed to power system.



2. PV system components:

PV system is composed of square solar cell, battery, charge and discharge controller, inverter and other equipment composition. The role of the various pieces of equipment is:

(1) solar cell matrix: in a light case, the cell absorb light, the battery charge at both ends of the accumulation of different signs appear, that have a "photovoltaic" is the "photovoltaic effect." Photovoltaic effect in the role, the electromotive force generated at both ends of the solar cell will convert solar energy into electrical energy, is the energy conversion device. Silicon solar cell is generally divided into single crystal silicon solar cells, polycrystalline silicon solar cells and amorphous silicon solar cells of three.

(2) batteries: its role is to store solar cell matrix by light and may at any time when the issue of power supply to the load.

(3) Controller: Control power options, in the city, solar power, battery power to choose between, on the battery charge.

(4) Inverter: is to convert alternating current to direct current device.



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