Application of luo converter and multilevel cascaded converter for grid integration of solar PV systems

Recent advances in solid-state semiconductors have led to the development of medium-voltage power converters which could obviate the need for the step-up transformers of renewable power generation systems. The modular multilevel cascaded converters have been deemed as strong contenders for the development of medium-voltage converters, but it requires multiple isolated and balanced dc supplies. In this paper, DC voltage regulation is achieved by using proposed luo converter for a PV panel and a sinusoidal pulse width modulation (SPWM) based transformer coupled multilevel inverter is modeled so as to get interconnected with grid. The output of the PV panel is fed to the Battery for the storage purpose, from which the voltage is used during night time. It is expected that the proposed new technology will have great potential for future renewable generation systems and smart grid application.