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<p><strong></strong>Limitations of DC injection into the AC network is an important operational requirement for grid connected photovoltaic systems. There is one way to ensure that this issue needs a power transformer as a connection to the AC network. However, this solution adds cost, volume, mass, and power losses. Ideally there shouldn't be any DC at the output of the inverter, but practically, a small amount of DC current is present. Therefore, in this paper there are techniques for the DCdoi:10.11591/ijpeds.v9.i2.pp478-494 fatcat:xy4s4suel5anxdjyv7ozyawpum