A Review of the DC-AC Inverters Used in Photovoltaic Systems

To cope with the perpetually growing energy demand and save the remaining valuable natural resources, a swift transition to utilizing renewable energy sources (RES) has become vital. Solar power stands out among the other RES due to its abundance, availability, cost-effectiveness, etc. Solar energy, also called photovoltaic (PV), still has limitations in terms of efficiency, stability, power output capacity, costs, etc. The need for research and development into improving the utilization techniques and transfer efficiency of RES is intensifying. Various systems and components are imperative to the methods of generating electricity from solar energy, a significant one being DC-AC inverters. The optimum performance of PV can be achieved by using inverters with minimal structural complexity, appropriate size, good lifetime, and reasonable cost. An investigation of numerous types of DC-AC inverters used in photovoltaic systems, along with their specifications, working principles, advantages, and disadvantages, are addressed in this review work, as well as a comparative analysis of some recently proposed topologies.