Analysis of Cascaded multilevel inverter

There is a new control strategy to control Cascaded multilevel converters in a multi-string configuration for single phase grid connected systems. This topology generates high quality output current under any circumstances specifically in partial shading, while tracking the MPP of each string independently. The topology does not consist of any extra DC-DC converter stage which causes some limitation in the performance but definitely reduces the overall cost and efficiency. Simulation results are provided to validate the proposed control system.