harmonics | Academic Journals and Conferences

Experimental Studies of Power Quality Indicators of Autonomous Low-Power Generators

Experimental studies of the main indicators of power quality at the terminals of autonomous low-power generators were carried out. The content of higher voltage harmonics, as well as voltage and frequency deviations from the nominal value were determined. In the course of the research, the technical means of data collection and analysis by National Instruments were used. The main indicators of the power quality of autonomous inverter generators are shown to fully comply with the EN 50160-2022 standard.

Emerging trends in microgrids technologyand prospects for their implementation in Ukraine

This reseaech explores the expediency and future prospects оf microgrids implementing. Their potential applications in various sectors like transportation, military operations, and civil infrastructure have been analyzed.

DETERMINATION OF VOLTAGE CONFORMITY FACTOR IN POWER SUPPLY SYSTEMS

New technical developments, such as in the field of frequency drives of technological units, electrified transport, wind, and solar power plants, apply devices built on the basis of powerful transistors. Modern devices designed on these elements are powerful generators of higher harmonics of currents that penetrate the grids of power systems. It requires the development of measures and means to limit the higher harmonics of currents in the electrical grids.

Simulation of transients for designing multiple power filter circuits

The practice of operating multiple single-tuned filters in industrial power supply systems has shown that technological transformer capacitors in switching filters within the systems can cause the damage of filters. The most disturbing loads on the power supply systems are powerful AC arc furnaces. Static Var compensators used in the power supply systems contain multiple harmonic filters for harmonic mitigation and reactive power compensation.

Vibration diagnostic model of ball radial piston pump of hydraulic gear.

The universal mathematical model of dynamic processes in a radial plunger hydromashine pump with ball-pistons is created. This model takes into account inertial properties of piston balls, a stator, elastic liquid properties in a cylinder control, eccentricity, replenishment pressure and pressure in cavity pumping, and rotor frequency rotation. The law of pressure changes is established; this law takes into consideration its reproaches in pump cylinders.