Abstract
We propose a high-performance and robust control of a transformerless, single-phase PV inverter in the standalone mode. First, modeling and design of a DC-DC boost converter using a nonlinear back-stepping control was presented. The proposed converter uses a reference voltage that is generated by the Perturb and Observe (P&O) algorithm in order to extract the maximum power point (MPP) by responding accurately to varying atmospheric conditions. Another goal for using the boost converter is to raise the voltage at the input of the inverter without using a transformer in this system, thus making the system more compact and less expensive. Secondly, the single-phase H-bridge inverter was controlled by using back-stepping control in order to eliminate the error between the output voltage of the inverter and the desired value, even if there is acute load variation at the output of the inverter. The stability of the boost converter and H-bridge inverter was validated by using Lyapunov’s stability theory. Simulation results show that the proposed PV system with back-stepping controllers has a good extraction of the MPP with an efficiency of 99.93% and 1 ms of response time. In addition, the sinusoidal form of the output voltage of the inverter is fixed to 220 V and the total harmonic distortion of the output voltage was found to be less than 1%.
Highlights
In recent years, several researches were focused on how to decrease the environmental pollution on Earth by using clean sources of energy such as solar, wind, hydro, biomass, and biogas [1]
Several researches were focused on how to decrease the environmental pollution on Earth by using clean sources of energy such as solar, wind, hydro, biomass, and biogas [1]. These types of renewable energies are frequently applied to distributed generation (DG) [2]
One way to circumvent these issues is to use distributed power generation units based on photovoltaic systems
Summary
Several researches were focused on how to decrease the environmental pollution on Earth by using clean sources of energy such as solar, wind, hydro, biomass, and biogas [1]. These types of renewable energies are frequently applied to distributed generation (DG) [2]. In 2015, the World Bank estimated that 22.69% of the world’s rural population were not able to access electricity, since the source of power is often located geographically far from the consumers, requiring expensive distribution of this electricity by using transmission lines. According to the World Bank, 8.26% of the worldwide-transmitted power in 2014 is lost due to losses associated with transmission lines. One way to circumvent these issues is to use distributed power generation units based on photovoltaic systems
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
