Name
Grigorash Oleg Vladimirovich
Scholastic degree
•
Academic rank
professor
Honorary rank
—
Organization, job position
Kuban State Agrarian University
Web site url
—
Articles count: 65
The article deals with one of the promising areas belonging to energy-saving technologies; it is the introduction of biogasoline stations into agricultural production. The analysis of the application in the world has been shown. To determine the cost-effectiveness of biogasoline stations we have shown the data for the calculation of the potential of biomass: organic waste settlements; animal waste; waste of poultry; crop residues; waste processing industry. We have obtained graphic dependences of electricity generated in the day from livestock and poultry, as well as the number of sunflower, rice, and sugar beets. The table also shows the thermal properties of organic agricultural wastes, allowing increasing the efficiency of calculations to determine the biomass resources. We have considered the schemes of biogasoline stations, a gas turbine power plant and a steam turbine power plant and disclosed the features of their work. To improve the operating and technical specifications of the stations intended for power generation we have proposed using non-contact generators and stabilization of parameters of electric power in their designs to carry out direct frequency converter. We have disclosed the advantages and disadvantages of biogas, as well as the direction of its effective use. It is shown that the use of all the possibilities in the complex of biogasoline stationns (production of fertilizers and motor oil, production of heat and electricity) would improve the efficiency and the payback of investment would be from 3 to 5 years, which is mainly determined by the volumes of biomass
The article reveals the advantages of low energy in comparison with other renewable energy sources. It is shown that broad prospects are visible for small (100 - 1000 kW) and micro hydropower plants (up to 100 kW) when used in the foothill and mountain areas. At the same time, the construction of hydropower plants of sleeve-type has improved the operational and technical characteristics, among other types of small-scale power plants. The article presents main analytical expressions for calculating hydroelectric power generator and it has built graphic dependences for the power generator of pressure and water flow. To improve the performance of small hydroelectric power plants we have proposed using unregulated water turbine and non-contact induction generator in their construction, thus, we could stabilize voltage and frequency directly by the frequency converter. Depending on the requirements of consumers to power supply reliability and electricity quality, we have offered several options for structural and circuit solutions of autonomous systems of electrosupply, made using small hydroelectric power plants. Thus, we can greatly enhance the efficiency of such systems if they are used with other types of renewable sources, such as windfarms or solar power plants
Perspectives of science in high schools were always
defined by prospects of development of scientific
teams. The author proposes to divide (depending on
the contents of research targets) unities of the
research process and the results of research teams
of the Department into three categories: a scientific
group, a scientific school and a leading scientific
school. Research teams are characterized by not
only quantitative and qualitative composition, but
the annual results. We reveal functional duties of
leaders of research teams and the head of the
Department for their effective management. One of
the main tasks of the Department is to create
conditions for the disclosure of scientific and
creative abilities of students. The article describes
general concepts and the content of scientific
researches, including the formulation of themes,
goals and objectives of the research, as well as the
basics of research methodologies required for
students in conducting the research work. The
structure of research groups of the Department, the
content of their work, the main functional
responsibilities of heads of scientific disciplines and
the head of the Department, basics of scientific
research methodology discussed in the article, will
increase the organization's effectiveness and the
efficiency of R & D Department
The article shows that the quality of students depends on the qualifications of the teaching staff, which has a direct correlation with the results of research work
In the article, there were cited the resources of wind en-ergetic, hydroenergetic, solar energetic and biomass of the Krasnodar region
The article discusses the structural and control systems schematics and voltage stabilization in phase bridge circuits solar power inverters with PWM output voltage and improved performance
The article discusses the structural schematics of solar
energy systems, providing guaranteed power supply
to electricity consumers with priority for consumers
of the 1st category. The work describes main
functions performed by modern energy systems. It is
shown that nowadays solar power systems of
uninterruptable power supply are classified into three
types: independent; hybrid (combined); intellectual.
We have given the structural scheme of solar systems
power systems of uninterruptable power supply and
the features of their work. The article describes a
monitoring system, carrying out functions of control
and measurement of parameters of the power system
depends on its performance. The economic
performance of a solar power system has been
influenced essentially by the cost of solar and
accumulator batteries. The principal technical
characteristics of modern solar and regular batteries
of the best companies were compared. We have also
given recommendations for improving the operational
characteristics of solar energy systems of guaranteed
power supply, in which special attention is paid to
technical characteristics of the main functional
elements of the system, including electromagnetic
compatibility
The article discusses the new structural schematics stabilizers of voltage and frequency contactless power generators wind power installations
The article discusses a promising direction, aimed at improving the operational and technical characteristics of the autonomous power supply systems, through the use of a part of their gas piston power plants, wind pow-er and solar photovoltaic installations
The level of technical development today requires the creation of highly effective, including reliable, uninter-rupted power supply systems. We have shown modern requirements and design features of modern systems of uninterruptible power supply, which should be built on a modular principle. It is shown that the problem of synthesis of systems in a modular approach is addressing three issues: development of the structure of the system subject to the requirements of consumers to quality of power and the allowable time of power outage; determining the required level redundancy of major functional units (blocks, elements) to ensure the required reliability of the system; - ensuring the most effective interconnection of modules, including electromagnetic compatibility, and the rational use during normal and emergency operation of the system. We have proposed new structural solution of the main functional units and uninterrupted power supply systems in modular design. To reduce EMI and improve efficiency uninterruptible power supply systems in the design of static converters we need to use a transformer with a rotating magnetic field. In addition, the prospective current is to be used as a source of renewable energy. Another promising approach is the use of direct frequency converters as voltage stabilizers and frequency of the current