Abstract
Solar power plant system represents the clean energy generation systems which convert and deliver the large amounts of solar radiation energy to the grid. The main purpose of the study is to maximize the amount of energy delivered to the grid from the solar photovoltaic cells. The solar irradiance and the grid voltage are the complex and dynamic system and need the universal solution which can provide more power at high dynamics of changes in external, various conditions. This work focuses on investigations provided in detail for the fuzzy logic-based synchronization technique which significantly increases the energy efficiency of the photovoltaic system. The multi-photovoltaic system’s controller concept was elaborated and evaluated using the programmable logic device, particularly useful for power critical drives. The dynamic responses of photovoltaic system were measured, which refers to the start procedure, solar irradiance, grid frequency and phase angle change. The results of the photovoltaic system investigation are made to appoint the efficiency in relation to the standard solution. The proposed fuzzy logic-based synchronization method delivers more energy to the grid in dynamic states in relation to the standard phase-locked loop method. The normal operation of the photovoltaic system is the dynamic operation. Therefore, the solution described in work allows to increase the efficiency of solar farms.
Highlights
The electrical energy consumption still shows an upward trend
The grid converter control process must complete three requirements: (i) the maximum produced in PV cells power should be delivered to the grid in various solar irradiances and temperature conditions; (ii) the required power quality should be generated in order to minimize the reactive power [7, 8]; and (iii) safety operation resulting in an antiislanding detection process implementation [9, 10]
The PV system controller designed for the programmable logic device of FPGA type has been comprehensively evaluated with respect to the different changes of solar irradiances and grid voltage disorders
Summary
The electrical energy consumption still shows an upward trend. The production of energy-efficient appliances is an insufficient action which leads to the reduced energy consumption. The grid converter control process must complete three requirements: (i) the maximum produced in PV cells power should be delivered to the grid in various solar irradiances and temperature conditions; (ii) the required power quality should be generated in order to minimize the reactive power [7, 8]; and (iii) safety operation resulting in an antiislanding detection process implementation [9, 10]. To achieve these requests, there are few control algorithms proposed in the literature [5, 6]. The idea of the FLC-based synchronization method and its basics for onephase system was described in [14]
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