PERFORMANCE ANALYSIS OF A GRID-CONNECTEDBUCK–BOOST PV INVERTER UNDER MISMATCHEDENVIRONMENTAL CONDITIONS
Keywords:
Buck and Boost based photovoltaic (PV) inverter, grid connection, maximum power point (MPP), mismatched environmental condition, series connected module, single phase, transformer lessAbstract
This research proposes a photovoltaic (PV) inverter that is connected to a single-phase grid and does not require a transformer. The inverter is capable of operating in either buck or boost mode, allowing it to extract the maximum power from two subarrays that are connected serially, despite the fact that each subarray is in a distinct configuration.
It is significantly simpler to construct a subarray with the least number of solar PV panels connected in series when employing an inverter that can operate in either buck or boost mode, contingent upon the application. Consequently, the power output of each subarray increases as it is subjected to a variety of environmental conditions.
In order to safeguard the common mode voltage from high-frequency elements, the inverter's control method and architecture are required in the design. This is done to ensure that the leakage current magnitude of the PV arrays remains within a specific range of values. Additionally, it is feasible to attain optimal operational efficiency throughout the entire operational spectrum.
The project's viability is verified by conducting intricate computer models following a comprehensive examination of the system that leads to the development of a mathematical model. Additional experiments must be conducted in conjunction with a 1.5 kW laboratory prototype to ensure that the approach is appropriate.
