in recent year's renewable energy sources have become a useful alternative for the power generation. the power of photovoltaic is nonlinear function of its voltage and current. it is necessary to maintain the operation point of photovoltaic in order to get the maximum power point (mpp) in various solar intensity. fuzzy logic controller has advantage in handling non-linear system. maximum power ...

A PV pumping system using induction machine is thoroughly investigated in this work. The power structure is constituted of multiple parallel DC/DC step-up converters directly connected to the inverter. Each DC/DC converter is used as a DC current transformer. The input characteristic of the inverter is enforced by means of an appropriate regulation, in order to avoid problematic dynamic resista...

This article deals with the analysis of energy efficiency optimization in battery-based photovoltaic pumping schemes. The study builds on previous findings derived from comparison between a direct water system (DPVWPS) and equivalent including lithium-ion battery (LIB). initial experimental results (PVWPS+LIB) were obtained motor-pump group operating at its rated condition 50 Hz. In present wor...

freshwater lens on small islands may easily be overexploited or polluted due to overdrafts of fresh water by pumping which causes drawdown of the water table a rise or up-coning of the saltwater interface. present study is concerned with using a three-dimensional finite-difference numerical model to simulate the groundwater flow and transport model to predict the behavior of groundwater system ...

This study presents a comparative analysis of different MPPT techniques for PV array fed water pumping system without batteries using brushless direct current (BLDC) Motor. The is configured to reduce both cost and complexity with simultaneous assurance optimum power utilization array, this we propose two intelligent maximum point tracking implemented through boost converter; the first based on...

in this paper, a novel control method for photovoltaic converter connection to the national gridis presented, so in addition to the injection control by solar arrays to the grid, this method cancompensate reactive power and harmonics in the load current. the system will be connected inparallel between the grid and load. the proposed system supplies all load power consumption(including active po...