Unified power quality controller suitable for fault ride-through and control method
A power quality and fault ride-through technology, which is used in photovoltaic power generation, AC network voltage adjustment, and AC network to reduce harmonics/ripples. And other issues
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[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0048] The topology of the present invention is as Figure 5 As shown, the APF is connected to the low-voltage side of the 110KV transformer, and the DVR is connected to the high-voltage side of the 110KV transformer.
[0049] Such as Figure 5 As shown, the voltage at PCC V pcc , PV outlet voltage V after DVR compensation pv , DVR adopts the same phase compensation of voltage, then there are:
[0050] S out = P out + jQ out = V pv V pcc ( P g + jQ g )
[0051] P ...
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