To prevent the development of plant diseases, irrigation water needs to be disinfected. The commonly applied cleaning methods do not allow the possibility of activation and enrichment of irrigation water with nutrients. The target of this study is to develop an environmentally friendly method for disinfecting and activating irrigation water by treatment with high‐voltage discharges in an electro‐hydraulic installation. The study used the following materials and equipment: a high‐voltage installation with an electro‐hydraulic spark gap, an EnSURE luminometer (Hygiena) to measure the level of hygiene of water and its solutions, AquaSnap Total (AQ100X) test tubes (Hygiena) to determine the total amount of adenosine triphosphate (ATP) in water, and an ITAN ionomer (Tomanalit) for measuring nitrogen compounds in water. Experimentally the following optimal parameters and technological conditions were determined and substantiated to reduce irrigation water pollution from 1210 RLU to 73 RLU and increase water content of nitrogen compounds from 1.2 mg L‐1 to 8.4 mg L‐1: an operating voltage of 19.9 kV, a capacity 0.145 μF, and a number of discharges of 2860 pcs. Water disinfected with high‐voltage discharges will be useful for agricultural irrigation since it can serve as a nitrogen fertilizer, which does not have any harmful effect on the environment.
The most prominent and rapidly increasing source of electrical power generation, wind energy conversion systems (WECS), can significantly improve the situation with regard to remote communities’ power supply. The main constituting elements of a WECS are a wind turbine, a mechanical transmission system, a doubly-fed induction generator (DFIG), a rotor side converter (RSC), a common DC-link capacitor, and a grid-side converter. Vector control is center for RSC and GSC control techniques. Because of direct and quadrature components, the active and reactive power can also be controller precisely. This study tracks the maximum power point (MPP) using a maximum power point tracking (MPPT) controller strategy. The MPPT technique provides a voltage reference to control the maximum power conversion at the turbine end. The performance and efficiency of the suggested control strategy are validated by WECS simulation under fluctuating wind speed. The MATLAB/Simulink environment using simpower system toolbox is used to simulate the proposed control strategy. The results reveal the effectiveness of the proposed control strategy under fluctuating wind speed and provides good dynamic performance. The total harmonic distortions are also within the IEEE 519 standard’s permissible limits which is also an advantage of the proposed control approach.
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