Mathematical Support of Automatic Power Equalization Systems for Modular Power Source

Vestnik MEI ◽  
2020 ◽  
Vol 5 (5) ◽  
pp. 126-131
Author(s):  
Aleksey V. Yudin ◽  
◽  
Evgeniy A. Eliseichev ◽  
Viktor V. Yudin ◽  
◽  
...  
Keyword(s):  
Power Supply ◽  
Power Source ◽  
Mutual Inductance ◽  
Total Power ◽  
Electrical System ◽  
Supply Source ◽  
Power Difference ◽  
Power Supply Source ◽  
Power Equalization ◽  
Kyropoulos Method

An algorithm for controlling the modules of a power supply source of vacuum electric furnaces intended for growing artificial monocrystals of leucosapphire according to the Kyropoulos method is considered. Since the modules from which a source with the required capacity is assembled by connecting them in parallel are not exactly identical with one another, and so are the current conducting buses used to interconnect them, a situation may occur in which some of the modules are underloaded, while others are overloaded. Therefore, in addition to stabilizing the total power produced by the source, the automatic control system must minimize the power difference among the modules. An algorithm ensuring balanced operation of the modules is developed, which is based on modeling the processes in an electrical system consisting of power supply modules and current supply buses that take into account their parameters — resistance, inductance, and mutual inductance. The algorithm has been implemented in the MatLab environment. The algorithm testing results have shown that the power difference among the power supply modules is decreased by more than a factor of two.

Development of a Power Supply Source for the Technological Electron-beam Gun Control Electrode

Vestnik MEI ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 86-92
Author(s):  
Nikita M. Vakhmyanin ◽  
◽  
Aleksey V. Shcherbakov ◽  
Daria A. Gaponova ◽  
◽  
...  
Keyword(s):  
Electron Beam ◽  
Power Supply ◽  
Gun Control ◽  
Supply Source ◽  
Control Electrode ◽  
Power Supply Source

scholarly journals Automatic System of Synchronous Connection of Backup Power Supply Source in Power Systems with Motor Load

2020 ◽  
Vol 20 (4) ◽  
pp. 36-42
Keyword(s):  
Power Systems ◽  
Power Supply ◽  
Automatic System ◽  
Supply Source ◽  
Power Sources ◽  
Industrial Enterprises ◽  
Experimental Stand ◽  
Asynchronous Motors ◽  
Power Supply Source ◽  
Fast Acting

We developed an automatic system of synchronous connection of a backup power supply source in power systems with synchronous and asynchronous motors in case of power loss from the main source. Here, we propose performing continuous monitoring of the instantaneous voltage values of the main and backup power sources and determining the angle between them. The time to send the command to turn the backup power switch on is determined on the basis of the results of approximating the dependence of the angle between the voltages of the main and backup power sources on time. The proposed algorithm can be used in microprocessor fast-acting automatic transfer switch devices to ensure acceptable levels of currents of stators and electromagnetic moments of electric motors in self-starting modes and to maintain a complex continuous technolo­gical process at industrial enterprises. The effectiveness of the developed automatic system of synchronous connection of a backup power supply source has been confirmed using mathematical modeling methods and laboratory tests at an experimental stand.

scholarly journals Justification of the Parameters of a DC/DC Converter for an Autonomous Power Supply Source

2020 ◽  
Vol 20 (4) ◽  
pp. 86-95
Keyword(s):  
Power Supply ◽  
Electric Power Industry ◽  
Active Phase ◽  
Input Voltage ◽  
Energy Storage Devices ◽  
Supply Source ◽  
Power Sources ◽  
Storage Devices ◽  
Voltage Change ◽  
Power Supply Source

As the Smart Grid concept has become a part of the electric power industry development, DC/DC conver­ters have turned into a matter of increased interest. This is due to their effective coordination in the DC-bus system operating different types of power sources, including renewable ones and energy storage devices (batteries, supercapacitor modules), and various loads. The article analyzes switch mode power supply DC/DC converters for autonomous power supply systems. The application of the SEPIC (Single Ended Primary Inductance Converter) type converter is substantiated. The techniques of determining the parameters of the converter are presented. The active phase at the duty cycle operation has been demonstrated, and justified in accordance with the theoretical behavior in response to an input voltage change above and below the desired output value. A simulation of the converter's operation in the buck and boost modes in order to stabilize the output voltage at a set level has been performed in the MATLAB / Simulink package. The obtained simulation results show the effectiveness of the suggested solution for an autonomous power supply source.

scholarly journals Development of a mathematical model of an autonomous power supply source with a free piston motor on the basis of a synchronous electric returning machine with a permanent magnets

2020 ◽  
Vol 22 (1) ◽  
pp. 38-48
Author(s):  
A. R. Safin ◽  
I. V. Ivshin ◽  
E. I. Gracheva ◽  
T. I. Petrov
Keyword(s):  
Electric Power ◽  
Power Supply ◽  
Power Plants ◽  
Permanent Magnets ◽  
Combustion Engine ◽  
Design Parameters ◽  
Supply Source ◽  
Free Piston ◽  
Power Supply Source ◽  
The Russian Federation

One of the current trends at present is the development of small energy, which is a particularly urgent task for the Russian Federation with its vast territories and the specifics of the electric power system. In the Russian Federation, the bulk of the electricity is generated at large power plants and transmitted through power lines. 60–70% of the country's territory lacks a centralized power supply, where more than 20 million people live, and the development of small and micro-energy facilities is necessary. Using a synchronous electric reciprocating machine with permanent magnets in power plants of a modular type makes it possible to rationally design an autonomous power supply source, to obtain the most optimal design. The development of methodological design decisions and the optimization of engine design parameters as part of generating and drive complexes is an important scientific task. A mathematical description of thermodynamic processes in a free-piston internal combustion engine, electromechanical and thermal processes occurring in a synchronous electric reciprocating machine with permanent magnets is developed, which is a necessary condition for designing and optimizing the design of an autonomous electric power complex. According to theoretical calculations, in the Matlab application, on the basis of the additional Simulink module, a simulation model of a free-piston internal combustion engine, linear current load calculation units, stator magnetic induction, magnetic induction created by permanent inductor magnets, electromagnetic force were developed and calculated. The created procedure for calculating the parameters of the electromagnetic component of the force of a synchronous machine with permanent magnets allows you to calculate and optimize the design parameters of the inductor and stator element of the electric motor under consideration. Thus, this will allow us to design electric machines with improved energy characteristics, due to the use of the obtained simulation results, which will allow us to use them more efficiently in the composition of generating and drive complexes.

Sign in / Sign up

Export Citation Format

Share Document