CHARACTERISTICS OF SPECIALIZED SINGLE-PHASE HIGH VOLTAGE DOUBLER RECTIFIER
Journal Title: Електротехніка і Електромеханіка - Year 2018, Vol 0, Issue 5
Abstract
Introduction. To obtain a high voltage direct current, voltage multipliers with a number of cascades of three or more are widely used. At the same time, for voltage levels of 100…200 kV there are several advantages of using a specialized single-phase high voltage doubler rectifier. Problem. The main difficulty is that at the moment mathematical modeling has not been worked out for describing modes that use the built-in R, C-filter, as well as a nonlinear load in the form of Zener diodes. Goal. Generalization of the results of the authors' previous publications on the development of an analytical method for calculating the modes of a typical high-voltage direct current installation based on a specialized single-phase voltage doubler rectifier. Methodology. Compilation of a system of algebraic linear and nonlinear equations that describe the current and voltage modes in the elements of a typical high-voltage direct current installation with a nonlinear load. Results. It is shown that with the use of linearization of the current-voltage characteristics of Zener diodes used in the load circuits of a typical high-voltage direct current installation, an analytical solution for the voltages and currents in its elements can be obtained. Originality. The theoretical basis of the complex solution of the system of equations for the currents, voltages and power of the elements of a typical high-voltage direct current installation with the account of nonlinear pulsations is formulated for the first time. Practical value. The obtained theoretical results can be used for calculations, design, optimization of the modes for a wide range of high-voltage direct current installations of technical, technological, and measuring purposes in the range up to 100...200 kV.
Authors and Affiliations
V. O. Brzhezytskyi, R. V. Vendychanskyi, Ye. O. Trotsenko, Ya. O. Haran, O. M. Desyatov, V. I. Khominich
Keywords
Related Articles
- EP ID EP494961
- DOI 10.20998/2074-272X.2018.5.09
- Views 79
- Downloads 0
FEATURES OF SELECTION OF CAPACITOR BANKS IN ELECTRIC NETWORKS WITH INTERHARMONIC SOURCES
Purpose. Development of a methodology for selecting capacitor bank parameters designed to compensate for reactive power, if there are sources of interharmonics in the electrical network. Development of a methodology for...
SOME FEATURES OF DYNAMIC CHARACTERISTICS OF BUMPERS WITH PERMANENT MAGNETS
This article describes the features of the dynamics of the bumper with permanent magnets. Pictures of the magnetic field in 3D are presented, transients are calculated. It is shown that operation of this system depends o...
ANALYSIS OF THE OPERATION PECULIARITIES OF THE SUPERCONDUCTING INDUCTIVE CURRENT LIMITER WITH ADDITIONAL SUPERCONDUCTING SCREEN
Purpose. The inductances of magnetic system of a current limiter for the nominal operating mode were determined. The aspects of functioning and a design of a superconducting short-circuit current limiter of inductive typ...
APPLICATION OF A RELATIVE TECHNICAL LEVEL INDEX METHOD TO INDUCTION MOTOR OPTIMIZATION PROBLEMS
On the basis of a method of relative technical level indices with relative geometric controlled variables, analytical expressions are derived to determine the optimum geometric dimensions of the squirrel-cage induction m...
A METHOD OF DETERMINING THE ABILITY OF THE ARRESTER TO ABSORB ENERGY WITHOUT BREAKING THE HEAT BALANCE
Purpose. The aim of this study is to obtain a method for determining the capacity surge arrester nonlinear absorb energy without breaking the heat balance in modes of long-term application of operating voltage, which all...