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What Is The Difference Between A Solar Inverter with An Inverter Transformer and One without An Inverter Transformer?

What Is The Difference Between A Solar Inverter with An Inverter Transformer and One without An Inverter Transformer?

The inverter converts DC power (battery, storage bottle) into AC power (usually 220V, 50Hz sine wave). There is a small component in the power inverter system - the inverter transformer. What is the difference between the whole system with an inverter transformer and without an inverter transformer?

Inverter transformer

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The main difference is with isolation and without isolation. The isolation inverter transformer can isolate the main circuit from the power grid, which can prevent DC from entering the power grid. Reduce the impact of harmonics on the power grid, which is good for the power grid and the inverter, and plays a certain protective role. At the same time, it also has the effect of voltage stabilization. However, the working efficiency of the system without an inverter transformer is slightly higher than that with an inverter transformer.

The solar photovoltaic system circuit connection components are different. Some components need to be grounded. At this time, an inverter with an isolation transformer must be used. For example, the thin-film component requires the negative pole to be grounded. In order to avoid the "surface polarization" phenomenon, the inverter power switch tube is turned on randomly. If there is no isolation transformer, there will definitely be a short circuit between one side of the grid and the ground. Therefore, in the application of amorphous silicon thin-film components connected to the grid, it is necessary to have an isolation transformer between the AC side and the grid for safety performance requirements.

EEIO inverter transformer is a toroidal transformer with high efficiency, long life, and primary and secondary isolation. It is also an isolation transformer, which is very popular with customers and is often used in solar inverters.

Tag: Inverter Transformer | 3 Phase Transformer