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This paper focuses on the modeling, controller design, simulation and analysis of a two-string photovoltaic (PV) and storage system connected to grid via a centralized nine-switch three-level inverter. A circuit-based PV array model is presented for use. A boost converter is employed to enable PV to operate at its maximum power point. The storage system consists of a capacitor bank connected at the...
In recent years, the increase of energy demand and the problems of fossil-fuel sources due to their environmental pollution and future shortages, have led to the development of technologies need to use non-polluting alternative energy sources such as solar and wind sources. Growing demand, advancements in semiconductor technology and magnetic materials such as high frequency inductor cores, has a...
This paper presents a single-phase photovoltaic power conditioning system (PVPC) based on a Z-source impedance network instead of a conventional boost converter. Using Z-source networks, the system can work within a wider range of PV array output voltages than for a conventional boost converter. Single phase instantaneous reactive power theory is adopted for harmonics current detection and a synthesis...
Anti-islanding protection and maximum power point tracking for a two stage photovoltaic grid-connected inverter is designed in this paper. A new algorithm based on the traditional active frequency drift method is proposed to decrease none detection zone of the islanding detection. Perturbation and Observation method is adopted for the maximum power point tracking of the boost converter of the input...
Many methods for interfacing PV system with utility grid have been reported in the literature. In this paper, a power electronic interface using boost converter and line commutated inverter is proposed with maximum power point tracking (MPPT), for the first time. This paper presents the design, simulation and implementation of a simple power electronic interface for grid connected PV array using boost...
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