Study and Realization of a Single-Phase Solar Inverter with Harmonics Rejection

In this chapter, a single-phase solar inverter with LCL filter is proposed to ensure the stability of the connection between the photovoltaic system and the grid. In this way, the chapter reviews different possible control structures that can be used for grid-connected inverters and then examines their capabilities. The inverter is controlled by a PWM signal, and an LCL filter is used to attenuate the harmonics generated by the inverter. The project includes a method of modeling and detailed analysis of the inverter topology, the design of the LCL filter, the selection of components, and the implementation of the inverter. The experimental results indicate that the chosen transistors and gate drivers provide the best speed and reliability required for the inverter. This inverter is able to supply high-quality sinusoidal alternating voltage and precisely control the output voltage; it offers a potential solution to ensure the stability of photovoltaic systems when they are connected to the grid.