Technical FAQs 4

Why do PV inverters have a low voltage?

This happens due to weather dependent active power generation characteristics of PV inverters. Voltage variation might also violate ANSI C84.1 standard. On Load Tap Changing (OLTC) transformers are installed at Medium Voltage level to maintain the PCC voltage to its nominal value.

What is a connected PV inverter?

connected PV inverters are gaining popularity at Low Voltgae (LV) distribution level for providing clean and affordable energy. Typically, solar PV inverters generate active power depending upon solar irradiation and inject it at unity power factor (UPF) into the grid.

Why do PV inverters fluctuate PCC voltage?

Abstract—Deployment of direct grid feeding solar Photovoltaic (PV) inverters are increasing. With the increase in PV penetra-tion, fluctuation in Point of Common Coupling (PCC) voltage occurs more frequently. This happens due to weather dependent active power generation characteristics of PV inverters.

How do solar PV inverters affect voltage regulation in LV system?

Typically, solar PV inverters generate active power depending upon solar irradiation and inject it at unity power factor (UPF) into the grid. With increasing penetration level of solar PV inverters, sudden change in active power generation due to partial shading results in poor voltage regulation in LV system.

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PV inverter AC tap

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