Energy and energy efficiency

Research of integrated consumers energy supply systems with electric and thermal energy accumulation optimal functioning.

Complex study and scientific substantiation of energy hubs concept using possibilities as unit of integrated energy supply systems in Ukraine with the purpose of technical substantiation solutions for the development and creation of their operation control modes models, which helps to ensure optimal flow distribution between energy sources and consumers with consumers energy use efficiency increase.

Methods and means of optimal control of hydroelectric power plants, power units and RES in case of changes in frequency and power flows in the integrated power system

Methods and means of optimal control of hydroelectric power plants, power units and RES in case of changes in frequency and power flows in the integrated power system

The method of synthesis of optimal regulators of multidimensional, nonlinear systems, which are able to solve the problems of systemwide management of transient modes of the united electric power system (UPS) in real time mode, taking into account the restrictions on the resources of the means of regulation and the allowable limits of deviation of the regime parameters by forecasting the vectors of future states of the nonlinear system with the subsequent quadratic optimization with the given restrictions, has been developed

Complex energy supply systems for the autonomous objects based on the renewable energy sources

The autonomous power supply system for local object based on the photovoltaic panels and a buffer battery has been developed. Such system allows to balance the generation and consumption of energy. A mathematical model of the functioning of a complex power supply unit based on renewable energy sources has been developed. This model takes into account the climatic and meteorological conditions of the locality for determination of the optimal ratio of the installed capacities of different sources, and a generalized model of the coordinated operation of the generating equipment and the storage subsystem

Dynamic models of energy flows of buildings are in the context of functioning of the engineering’s systems and business activity of users

Functionality of Smart Houme has certain limitations, among which is the inability to analyze the activity of the residents, determine its impact on energy consumption, identify the physical state of the user by his activities. There are no solutions that would be able to solve this
problem today. One approach is to use the activity analysis of binary motion sensors. The advantage of this approach is the low cost of implementation and privacy of the residents. The system functions in real time.

Development and research of superheated liquefied gas feeding system for internal combustion engines

Development and research of superheated liquefied gas feeding system for internal combustion engines

A new technical solution is proposed that improves and simplifies the mixture process using the flashboiling effect and superheating. An experimental model of the developed liquefied gas engine power system in the liquid state is designed, which allows to improve the energy and environmental performance of the engine, to reduce the consumption of expensive traditional fuel and to bring cheap environmentally friendly gas fuels to the engine.

Complex energy supply systems for the autonomous objects based on the renewable energy sources

The autonomous power supply system for local object based on the photovoltaic panels and a buffer battery has been developed. Such system allows to balance the generation and consumption of energy. A mathematical model of the functioning of a complex power supply unit based on renewable energy sources has been developed.

The development of energy-efficient process for the high-temperature processing of bulk carbon materials in electric furnaces

The physical and mathematical models of the dynamics of the dense motion of a granular medium and the thermoelectric state of a single-phase mine electric furnace during high-temperature heat treatment of carbon material are formulated, on the basis of which the corresponding discrete and continuum numerical models of the physical fields of the electric calciner are developed taking into account the dense motion of the granular medium and chemical interaction.

Aluminum two-phase heat transfer systems with steam and liquid separation for energy efficient technologies

Comparison of designs of heat exchangers with smooth-walled aluminum grooved heat pipes (AGHP) with a diameter of 8 mm and finned AGHP with an outer diameter of 43 mm. The use of smooth-walled AGHPs, on the one hand, results in a larger number of them in the heat exchanger compared to the finned AGHPs, but, on the other hand, results in a smaller pressure drop in the channels. On the basis of the experimental data, dependences were obtained for the calculation of the coefficients of heat exchange and aerodynamic resistance for a heat exchanger with smooth-walled AGHPs.

Aluminum two-phase heat transfer systems with steam and liquid separation for energy efficient technologies

Comparison of designs of heat exchangers with smooth-walled aluminum grooved heat pipes (AGHP) with a diameter of 8 mm and finned AGHP with an outer diameter of 43 mm. The use of smooth-walled AGHPs, on the one hand, results in a larger number of them in the heat exchanger compared to the finned AGHPs, but, on the other hand, results in a smaller pressure drop in the channels. On the basis of the experimental data, dependences were obtained for the calculation of the coefficients of heat exchange and aerodynamic resistance for a heat exchanger with smooth-walled AGHPs.

Development of efficient electrobus electromechanical system based on adaptive vector- controlled induction motor drive with accumulator-ultracapacitor power source

An experimental electrical drive for electric buses and traks is developed and experimentally tested. Developed power converter for induction motor based electrical drive provides 100 kW of output power. Flux-torque (speed) control algorithms for induction motor are developed, implemented and experimentally verified. Developed nonlinear controller take into consideration motor's magnetizing curve provides asymptotic flux-torque (speed) tracking, torque per Ampere maximization (MTA) as well adaptation to stator and rotor resistances.

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