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Micro Inverters

A microinverter is an alternative solution for the string inverter. There are two types of microinverters for solar PV system applications. One type directly converts DC power to AC power in the module level itself. The other type boosts the DC voltage in the module level using a DC optimizer and connects to the inverter. Microinverter-based options are called module level power electronics. Each module is connected in these systems to an inverter that is usually connected just below the panel. Each panel with one inverter prevents the dependence of the generation of one module on other modules. Each panel is going to be independent. This type of system is best suited to a place where shadow problems occur on one or more number of modules, roofs with different directions, etc. In these types of systems, module level monitoring is possible. It helps in the easy maintenance of the system. One module or one inverter failure wouldn’t affect the generation of the rest of the system.

The electrical parameters of each module can be monitored and the data can be sent to a database center where the performance details can be monitored and analyzed. It is of great benefit for the operation and maintenance of solar plants. These microinverters are more efficient and produce more power compared to standard string inverters. Though they are expensive, they have better durability and a longer life.



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