This study focuses on the problem of the efficient energy management of an independent fleet of freight electric vehicles (EVs) providing service to a city multi-floor manufacturing cluster (CMFMC) within a metropolis while considering the requirements of smart sustainable electromobility and the limitations of the power system. The energy efficiency monitoring system is considered an information support tool for the management process. An object-oriented formalization of monitoring information technology is proposed which has a block structure and contains three categories of classes (information acquisition, calculation algorithms, and control procedures). An example of the implementation of the class “Operation with the electrical grid” of information technology is presented. The planning of the freight EVs charging under power limits of the charging station (CS) was carried out using a situational algorithm based on a Fuzzy expert system. The situational algorithm provides for monitoring the charging of a freight EV at a charging station, taking into account the charge weight index (CWI) assigned to it. The optimization of the CS electrical load is carried out from the standpoint of minimizing electricity costs and ensuring the demand for EV charging without going beyond its limits. A computer simulation of the EV charging mode and the CS load was performed. The results of modeling the electrical grid and CS load using the proposed algorithm were compared with the results of modeling using a controlled charging algorithm with electrical grid limitations and an uncontrolled charging algorithm. The proposed approach provides a reduction in power consumption during peak hours of the electrical grid and charging of connected EVs for an on-demand state of charge (SOC).

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One of the main tasks of the last two decades is to find ways to optimize energy consumptions for aircrafts. The commercial aviation business is increasingly using environmental monitoring systems and electrical control by using AC and DC tires. One of the trends in the development of aircraft control systems is the replacement of hydraulic and pneumatic systems with electrical ones. The aerospace industry and airlines are interested in performing steering operations without major engines. This operation method allows to save fuel, reduce brake wear, eliminates towing and achieve decreasing of environmental pollution. In the future it is necessary to implement electric steering using a traction drive (TD) based on a synchronous motor with permanent magnets (PMSM). This system is powered by an available auxiliary power unit or other sources such as fuel cells or batteries. This study presents a highly efficient electric steering system as a modern solution for improving the ground operations of modern aircraft powered by main engines. The system was investigated using steering profiles for takeoff and landing. The study determined the effectiveness of its use for steering. The influence of external factors and the change of parameters of the electromechanical system of wheel with an elastic tire were investigated. The results of modeling the dynamic processes of an electromechanical system containing elastic links in the conditions of parametric perturbations confirmed the robust stabilization of dynamic control quality indicators based on the laws of fuzzy logic.

The development of "green" energy in Ukraine involves an increasingof the amount of electricity generated by photovoltaic modules (PMs). However, PMs have disadvantages associated with the inconsistency of electric generation in time due to the diurnal and annual motion of the Sun and to the shading of the modules. In order to maintain steady generation during the day and the year, there are two ways to minimize the impact of these factors.First one is to install an excess capacity which means higher cost of the solar plant and using an additional area.Second one isto apply a system of orientation PMs perpendicular to the sun's rays. In the article three cases of solar panels installation are considered: usinga two-axistracking system, using aheight tracking system and anazimuth tracking system. There wasgiven the method and algorithms of calculation and analysis the parameters of theuniaxialand biaxial tracking system when installed in Kyiv.The algorithm involves calculation the coordinates of Sun in any moment of time for the considered location, pass-through and absorptive capacityof the protective glass, estimation the amount of the direct and diffuse solar radiation and their impact on the total radiation on the surface of the photoconverter. There was made an estimation of energy usage efficiency levels for the considered systemsusing the proposed algorithm.