name
Grigorash Oleg Vladimirovich
Scholastic degree
•
Academic rank
professor
Honorary rank
—
Organization, job position
• Kuban State Agrarian University
Заведующий кафедрой
Research interests
1. Разработка автономных систем электроснабжения с использованием возобновляемых источников энергии. 2. Разработка методик оценки качества подготовки студентов и эффективности деятельности профессорско-преподавательского состава.
Web site url
—
Current rating (overall rating of articles)
0
TOP5 co-authors
Articles count: 65
Сформировать список работ, опубликованных в Научном журнале КубГАУ
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THE METHOD OF PREPARATION OF FIRSTYEAR STUDENTS TO UNIVERSITIES
DescriptionThe rapid pace of global scientific and technological progress, which is the main engine of the economy, demands for higher education, the purpose of which is to prepare highly educated specialists – the intellectual potential of Russia. It is known, that technical and technological skills play an important role in scientific and technical progress; ultimately, the economic development of the country and the welfare of the population depends on it. The selection by the criterion of professional suitability is the basis for building a decent contingent of firstyear students of technical universities. The article describes the disadvantages of the known and the new method of selection, by qualifications, based on the evaluation of the implementation of the students tests on topics studied disciplines close to engineering. The article reveals content of the main stages of pre-University training in secondary educational institutions. The proposed method of selection based on professional suitability, and the system of training of contingent in secondary schools and colleges, created on the basis of higher educational institutions, will significantly improve the quality of training of specialists of technical and technological directions for universities
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SOLAR POWER SYSTEMS WITH GUARANTEED POWER SUPPLY
DescriptionThe 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
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SYSTEMATIC MONITORING OF THE CLASSES – AN IMPORTANT ASPECT OF THE QUALITY OF TRAINING STUDENTS
DescriptionThe article considers the peculiarities of the management of monitoring visits to classes faculty by the head of the chair; we have also proposed criteria and indicators for assessing their quality
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THE SYSTEM OF TRAINING OF HIGHER PROFESSIONAL EDUCATION
DescriptionProposed in the article system of training, aimed at improving the educational institutions, will allow radically improve the quality of training of higher professional education
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THE SYSTEM OF KNOWLEDGE ASSESSMENT AND RATING OF TESTING OF STUDENTS
DescriptionAn important question is increasing objectivity in evaluation of current and residual knowledge of students on the subjects. Based on these assessments, teachers will adjust the work program and calendarthematic plan on discipline, forms and methods of teaching in order to ensure a high level of knowledge, allowing making necessary competence and skills of future specialists. The article proposes the evaluation system of students ' knowledge and determines their rankings, taking into account the qualifications of the teachers who taught their classes. Knowledge assessment might be defined as just one discipline, or as all the across disciplines for a semester, academic year and study period. The knowledge of students on discipline is estimated on the results of the test tasks based on current estimates obtained in a semester, and examination grades. We have reviewed the quality assessment system of students ' knowledge and determined their rating; it will increase the credibility of the evaluation. In addition, it increases the effectiveness of the educational process, since the evaluation of students ' knowledge and skills of teachers, will help heads of departments and deans to make decisions about the professional development of teachers, showed poor results
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SYNTHESIS OF MODULAR UNINTERRUPTED POWER SUPPLY SYSTEMS WITH INCREASED RELIABILITY
DescriptionThe 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
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RESOURCES OF RENEWABLE SOURCES OF ENERGY OF THE KRASNODAR REGION
DescriptionIn the article, there were cited the resources of wind en-ergetic, hydroenergetic, solar energetic and biomass of the Krasnodar region
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THE RESULTS OF THE REFORM OF THE EDUCATION SYSTEM IN RUSSIA
DescriptionOne of the main tasks is the improvement of the education system, the quality of which depends on the level of economic development of the country. In Russia, for more than 10 years there has been a continuously reformed educational system. This is due to Russia's accession (in 2003) to the group of countries – participants of the Bologna Declaration, involving the convergence and harmonization of education systems in European countries with the aim of creating a unified educational space. The article describes the main positions that are subject to a quality assessment of education from foreign universities; we have also revealed the reasons for the low world rating of Russian universities. At present, the education system of the country should facilitate accelerated development of the economy of the state in the first place. This work reveals the shortcomings of the main reforms related to the implementation of CSE in secondary educational institutions, the bureaucratization of the higher education system that resulted in time reduction of contact of the work of students with teachers, and as a result – deterioration of quality of preparation of graduates. We have also revealed the causes of the current situation and the main directions that will contribute to the development of the education system in Russia. These areas are the development of: a strategic plan for the development of higher education; a training system worthy contingent of higher education institutions; an effective system of preparation of students and evaluation of the quality of their knowledge and labor potential; a system of training for scientificpedagogical personnel and improving their qualification; assessment criteria of effectiveness and ability of educational institutions to provide quality knowledge
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FREQUENCY CONVERTERS WITH IMPROVED PERFORMANCE
DescriptionIn the autonomous power supply systems there are widely used frequency converters that are able to simultaneously increase or decrease the frequency of the current and voltage stabilizing power supply. These positive properties of frequency converters can improve the operational and technical characteristics of the autonomous power supply system in the complex. The article suggests a functional diagram of a frequency converter performed on reversible rectifiers. We have presented timing diagrams illustrating the principle of its operation. The article also deals with two functional scheme of direct frequency converters executed on single-phase, threephase transformer with a rotating magnetic field. The principle of operation of these schemes has been also discussed in the timing diagrams. The proposed technical solutions for frequency converters contain a smaller amount of power electronic devices that make it possible, thereby reducing the level of electromagnetic interference, increase the efficiency and reliability of performance inverters. The considered scheme of frequency converters, can improve the technical characteristics of the autonomous power supply systems in the complex. We can significantly improve the performance of power systems through the use of modular aggregating principle of the basic functional units of an autonomous system
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Description
In this article we have examined the following is-sues: structure flowcharts’ settlements and opera-tional peculiarities of converters and stabilizers of electrical parameters of wind power plants, solar power plants and mini-hydropower plants. All tech-nical decisions are covered by patents of the Russian Federation