scholarly journals RESEARCH OF PROPERTIES OF THE FREQUENCY CONVERTER AS THE POWER SUPPLY OF THE SHIP ELECTRIC EQUIPMENT

2017 ◽  
pp. 76-81
Author(s):  
Sergey Vladimirovich Golovko ◽  
Maxim Pulatovich Zhumanazarov ◽  
Nickolay Gennadievich Romanenko
Keyword(s):  
Power Supply ◽  
Frequency Converter ◽  
Voltage Measurement ◽  
Variable Loading ◽  
Public Power ◽  
Electric Power Supply ◽  
The Public ◽  
Operating Modes ◽  
Electric Equipment ◽  
Supply Systems

Data processing, received as a result of voltage measurement at the output of the frequency converter which is used as the electric power supply, was presented. Measurements of output voltage of the frequency converter were taken in case of the variable loading representing various combination of electric motors and glow lamps. Operating modes in case of symmetric and asymmetrical loadings were simulated. The collected data were checked for compliance to requirements of GOST 32144-2013 "Power quality limits in the public power supply systems" regarding the requirement to a sinusoid of the feeding voltage and its harmonious components. Data for handling were obtained on the experimental installation collected at the department "Electric equipment and automation of ships" of the Astrakhan State Technical university.

A Combined Wind-and-Sola Generator for Autonomous Electric Power Supply Systems

2018 ◽  
pp. 19-27
Author(s):  
BAGAUDIN Kh. GAITOV ◽  
◽  
Yakov M. KASHIN ◽  
Lev E. KOPELEVICH ◽  
Aleksandr V. SAMORODOV ◽  
...  
Keyword(s):  
Electric Power ◽  
Power Supply ◽  
Electric Power Supply ◽  
Supply Systems

scholarly journals The method for increasing the efficiency of equipment’s maintenance in railway traction power supply systems

2018 ◽  
Vol 47 (3) ◽  
pp. 39-47 ◽  
Author(s):  
Oleksandr Matusevych ◽  
Valeriy Kuznetsov ◽  
Viktor SYCHENKO
Keyword(s):  
Power Supply ◽  
Operational Reliability ◽  
Technical Condition ◽  
Repair System ◽  
Maintenance And Repair ◽  
Traction Substations ◽  
Electric Equipment ◽  
Traction Power Supply ◽  
Supply Systems ◽  
Traction Power

Purpose. To develop the method for increasing the efficiency of the equipment’s maintenance and repair system, ensuring necessary level of operational reliability of the equipment, safety and reliability of the electric equipment with minimal expenses on operation. Relevance. Aging of the power equipment in railway power supply systems sharply raised a need for assessment of its states and degree of risk for operation outside rated service life. In critical conditions of technological processes and operational modes of the railways it is necessary to increase the equipment’s operational reliability. The scheduled maintenance and repair system whose main technical and economic criterion is the minimum of equipment’s downtimes on the basis of a rigid regulation of repair cycles, in the conditions of market regulations in the field of repair in many cases does not provide the optimal decisions due to insufficient financing. The solution of this problem is possible by improvement of the maintenance and repair system. Under these conditions the main direction for supporting the operational reliability of power electric equipment on TS is a development of the modern methods based on individual supervision over real changes of technical condition of power equipment. Scientific novelty. In this article the authors proposed an integrated approach, on the basis of which can be developed the effective maintenance and repair system for traction power supply systems. Proposed approach allowed to react quickly to changes of service conditions on traction substations, to control the technical condition of power electric equipment under the conditions of uncertainty, to establish interrelation between quality of service and operational reliability of the equipment, to choose a service strategy on traction substations. Practical importance. The validity of the developed method was confirmed by the results of calculations and practically by choosing the optimal maintenance's option for transformer TDTN-25000/150-70 U1 (ТДТН-25000/150-70 У1) on traction power supply substation.

Transients in Electric Power Supply Systems

2016 ◽  
Author(s):  
Gennadiy Pivnyak ◽  
Igor V. Zhezhelenko ◽  
Yurii Papaika
Keyword(s):  
Electric Power ◽  
Power Supply ◽  
Electric Power Supply ◽  
Supply Systems

scholarly journals ORGANIZATION OF POWER SUPPLY OF THE FIRST CATEGORY RECEIVERS FOR PERSPECTIVE CIVIL AVIATION AIRCRAFT

2018 ◽  
Vol 21 (6) ◽  
pp. 54-64
Author(s):  
Alexander V. Kechin ◽  
Alexander V. Levin ◽  
Sergei P. Khaliutin ◽  
Boris V. Zhmurov
Keyword(s):  
Electric Power ◽  
Power Supply ◽  
Electrical Power ◽  
Emergency Operation ◽  
Civil Aviation ◽  
Technical Solution ◽  
Operating Modes ◽  
Advantages And Disadvantages ◽  
First Category ◽  
Supply Systems

The article deals with the issue of providing electric power to the first category receivers in the emergency mode of the power supply systems operation of perspective and modernized aircraft. The analysis of the published scientific works performed both in Russia and abroad, and aimed at solving problems of analyzing abnormal operations mode, synthesizing power supply systems and controlling them in order to prevent dangerous consequences is carried out. The authors considered the ingenious technical solutions aimed at providing the necessary quality power supply for the first category receivers in the emergency operation modes of the aircraft power supply systems for the safe completion of flight and landing. The research analysis and generalization of data on the technical characteristics of units and devices developed by the world's leading manufacturers of aviation equipment and used as emergency sources of electrical power on board modern civil aviation aircraft has been completed. The advantages and disadvantages of each technical solution are determined, as well as limitations to the area of their application are formed. The analysis of perspective emergency sources of the electric power including those, which previously were not applied in aviation because of their insufficient technical perfection, for example, hydrogen electrochemical generators is carried out. Based on the performed analysis, a solution which allows improving the operating modes of the electrical batteries is proposed. The offered solution makes it possible to increase the reliability and durability of electrical batteries, as well as the power supply duration of the first category receivers from them.

scholarly journals Improving quality of ac electric power supply of autonomous power sources using in agriculture

2020 ◽  
Vol 193 ◽  
pp. 01024
Author(s):  
Olga Milashkina ◽  
Vadim Zlobin
Keyword(s):  
Power Supply ◽  
Voltage Regulation ◽  
Voltage Regulators ◽  
Electricity Supply ◽  
Control Laws ◽  
Power Sources ◽  
Electric Power Supply ◽  
Use Of Technology ◽  
Supply Systems

Autonomous AC electricity supply systems are now widely introduced in agriculture. As the experience of operation of these electricity supply systems has shown, their various properties, determined largely by the type of voltage regulators and sensors used, do not always fully meet the constantly growing requirements for the quality of electricity. Further improvement of voltage regulation systems, and, consequently, the quality of electricity, is associated with the use of technology in them that can implement optimal control laws.

Sign in / Sign up

Export Citation Format

Share Document