Solar inverter efficiency means that as the demand for renewable energy, solar inverter market is growing, and these inverters require high efficiency and reliability.
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Solar PV inverters general block diagram, there are three kinds of inverter options. In a series of connected sun shining solar cell modules, each module comprising a series string of solar cells. DC voltage produced by the solar cell module is a few hundred volts, the value is determined by the lighting conditions, the battery temperature and the number of modules to determine.
The main function of the solar inverter is to convert DC voltage to a stable value. This function is implemented by the boost converter needs a boost switch and boost diode.
In the first structure, full-bridge converter separated its boosted. The role is to provide full-bridge converter isolation. The output of the second full-bridge converter side for the first full-bridge converter converts the direct current into an alternating voltage. The output is filtered by the AC grid before an extra double contact relay switch is connected to an object to provide safe isolation in case of failure and isolation from the grid at night.
The second structure is non-isolated solution, and the AC voltage generated by boosting a DC voltage directly. The third structure is using the power switch and power supply integrated boost diode and AC generating private topology functional, although the conversion efficiency of the solar panels is very low, it is important to make it close to 100%.
In Germany, the south-facing roof installation of a 3kW module can generate about 2550 kwh of electricity annually. If the inverter's efficiency from 95-96%, so it's able to generate additional annual 25kWh. The use of additional solar modules to generate 25kWh electricity will take up the inverter prices. Since the cost of solar inverter will not, if efficiency is improved, from 95% up to 96%, so this is an inevitable choice, investment and efficient inverters.
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