Multistage Feedback Control of a PV Supplied Two Phase Interleaved Boost Converter for Grid Interfacing Applications

This work aims to address the concerns that are associated with the interfacing of renewable energy sources such as photovoltaics to the grid. This is often accomplished by utilising a DC-DC Converter and an MPPT Algorithm. However, the irradiance that exists in nature is a continuously varying quantity, and conventional MPPT Algorithms function by varying output parameters of the DC-DC Converter, rather than maintaining the output voltage and current at a required reference. In this paper, a multistage control strategy is explored which successfully outputs a regulated voltage as the output even in conditions of varying irradiance. Thus, the model elaborated in the research presented here is able to facilitate regulated voltages in PV interfaced grid applications of converters.