Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
AGRIS logo UlrichsWeb logo DOAJ logo

Name

Kreymer Aleksey Semenovich

Scholastic degree


Academic rank

—

Honorary rank

—

Organization, job position

Kuban State Agrarian University
   

Web site url

—

Email

-


Articles count: 12

497 kb

ASYNCHRONOUS GENERATORS FOR SYSTEMS OF INDEPENDENT ELECTROSUPPLY. PART 1. THE SUBSTANTIATION OF PARAMETERS OF THE ASYNCHRONOUS GENERATOR

abstract 0591005023 issue 59 pp. 358 – 383 31.05.2010 ru 2812
Influence of circuit and constructive signs of stator and rotor windings on parameters and operational properties of asynchronous generators is examined
974 kb

ASYNCHRONOUS GENERATORS FOR SYSTEMS OF INDEPENDENT ELECTROSUPPLY. PART 2. THE BASE THEORY OF STATOR WINDINGS FORMATION OF ASYNCHRONOUS GENERATORS AND METHODS OF CALCULATION OF WINDINGS

abstract 0601006023 issue 60 pp. 305 – 335 29.06.2010 ru 2382
Influence of circuit and constructive signs of stator and rotor windings on parameters and operational properties of asynchronous generators is examined
1403 kb

ASYNCHRONOUS OSCILLATORS FOR A WELDING ARC POWER SUPPLY

abstract 0731109052 issue 73 pp. 601 – 628 30.11.2011 ru 1631
Demands to power sources of a welding arc and the results of development of such supplies are considered
301 kb

INSTITUTIONAL REPOSITORY FOR ACCOUNTING RESEARCH RESULTS (PART 1)

abstract 0971403091 issue 97 pp. 1323 – 1341 31.03.2014 ru 1414
Increasing of the number of consumers using the advancements in technology search and delivery of scientific information, creates a need for institutional repositories that manage, preserve and maintain digital assets and intellectual products, as well as multiply the speed and convenience of obtaining the necessary information
1613 kb

MODULATED STATOR WINDINGS OF THE MOTOR FOR FAN DRIVES

abstract 1181604094 issue 118 pp. 1441 – 1458 29.04.2016 ru 655
In poultry industry, animal breeding, greenhouses and vegetable stores a significant amount of fans with asynchronous motors is used to create a microclimate. The fan speed of the fan should be regulated in order to improve the efficiency, so the multispeed motors are used for the fan drives. Line produced two-speed motors with a proportion of the poles number 1:2 have a polar-switched Dahlander stator winding. Two-speed motors with a proportion of the poles number 3:2 and 4:3 have only one stator winding which is poleswitched by the method of amplitude phase shift keying. A drawback of the windings is that they have different energy indicators at different spin rates. In order to create rational diagrams with switching according to the number of poles, which is multiple of three, it is proposed to implement a polyphase MMF modulation of the three-phase winding. As a result of the study, there were procured the stator windings at 4 and 6 poles, which enabled to change the spin speed of the motor in the fan drives without breaking the drive power circuit by the scheme Δ / ΥΥ
118 kb

OVERVIEW OF TYPES AND METHODS OF INFORMATION SUPPORT AUTOMATION IN THE SYSTEM INTEGRATION SPHERE

abstract 1241610077 issue 124 pp. 1221 – 1228 30.12.2016 ru 502
System integration, as a kind of information technology, ensures that a range of services aimed at the implementation of integration tasks and divided into several types, including: horizontal, vertical, distributed and core data format. In addition, this type of activity has a number of different implementation methods and occupies a significant share of the IT market, having a great set of tools of the organization, allowing optimizing the performance of the tasks by optimizing the processes of project management and control, performed by various information systems. The lack of industry tools to consolidate the functionality involved in the full cycle of project implementation in the sphere is an important omission, adversely affecting the speed and quality of implementation of tasks. In this regard, there is need for a new approach to the automation of processes, and ensure information activities aimed at the solution of problems on the integration of information systems and their components, from the stage of task definition and ending with a commercial operation stage with further lifecycle support
626 kb

REDUCTION OF INRUSH CURRENT FOR INDUCTION MOTORS WITH CHANGING PARAMETERS OF A STATOR WINDING

abstract 0871303064 issue 87 pp. 838 – 851 30.03.2013 ru 1308
The schemes of the stator winding with double-wide-phase zone, allowing limiting the level of inrush current of induction motors without breaking the circuit power are presented in the article
421 kb

SUPPLYING THE GREENHOUSES WITH POWER BY THE USE OF ASYNCHRONOUS GENERATORS

abstract 1331709077 issue 133 pp. 1048 – 1061 30.11.2017 ru 337
Due to the recommendation of the World Health Organization, the standard rate of vegetables consumption for a person per year is 130-150 kg, including up to 15 kg of fresh production during the off-season. To meet these standards in Russia, the construction of greenhouses and greenhouse complexes was sped up. To cultivate the bulk of vegetables in the conditions of protected soil we have mostly used winter greenhouses. At the same time, in terms of the climatic conditions, the main production costs are accounted for energy carriers (up to 60 – 70%). The main consumers of energy in greenhouses are plants’ lighting and creation of the required temperature conditions for plants and soil. Annual increase of rates for energy carriers affects the cost of the greenhouses’ production. To increase the energy efficiency and independence in greenhouse complexes, it is proposed to use installations based on gas reciprocating units (GRU) for the production of two types of energy – electric and thermal. Such installations can run on the natural gas and other types of fuel. The drawback of existing installations is that they are mainly produced abroad or consist of the foreign components. As an alternative, we offer new technical solutions, which were developed and patented in the Russian Federation. What makes these solutions original is that asynchronous generators in the installations are used with various control schemes
475 kb

THE ARCHITECTURE OF A CONTROL SYSTEM FOR RELATIONSHIP BETWEEN THE COMPANY AND CUSTOMERS BASED ON CLOUD COMPUTING SERVICE

abstract 1191605096 issue 119 pp. 1442 – 1452 31.05.2016 ru 641
The control system of relationship between enterprises and customers (CRM) is one of the important components of an automated enterprise management system. For construction organizations there is a need in CRM architecture, providing linking of basic system objects (documents, artists, clients, events) to the company's projects. The most important trend in the development of such systems is the use of cloud technologies. Using the hybrid cloud technology provides a flexible and controlled access to resources and high availability. Internal accounting systems are implemented in the private sector of a hybrid cloud, CRM and web interfaces are placed in the public section. The implementation of the synchronization data module in the public part of a hybrid cloud over HTTPS ensures the security and confidentiality of the transmission
ßíäåêñ.Ìåòðèêà