Future of high power PV plants — 1500V inverters

The paper presents new trends in the development photovoltaic (PV) power plants, with particular reference on new inverter concept with DC-link voltage over 1000 V. For the inverters with the DC-link voltage reaching the value of 1500 V, basic and most important features will be presented. The principle of appropriate PV panel configuration selection in accordance with the inverter voltage input level (1000 V and 1500 V) will be shown, including the necessary equations. The discussion of the results, relative to the inverter input voltage level, will summarize the advantages and disadvantages of the new generation inverters, referenced to as high-voltage inverters.