1 . Requires a high efficiency. Due to the current high prices of solar cells , in order to maximize the use of solar cells, improve system efficiency, we must seek to improve the efficiency of the inverter .
2 . Requires a high reliability. Currently photo power sinverter voltaic systems are mainly used in remote areas, many power plants unattended and maintenance , which requires an inverter circuit with a reasonable structure, strict screening of components and require an inverter with a variety of protection features such as input DC reverse polarity protection , AC output short circuit protection , thermal overload protection and so on.
3 . DC input voltage is required to adapt to a wide range, the terminal voltage of the solar cell and the intensity of sunlight varies with load changes , although the battery voltage of the solar cell has an important role, but because the battery voltage with the remaining battery capacity and internal resistance change fluctuate , particularly when the aging of the battery terminal voltage range is large, such as 12V battery , the terminal voltage may vary between 10V ~ 16V, which requires a larger inverter must be within the range of the DC input voltage vehicle power inverters guaranteed to work , and to ensure that the AC output voltage stability .
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