scholarly journals High-Voltage Converter for the Traction Application

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Sergey Volskiy ◽  
Yury Skorokhod ◽  
Dmitriy Sorokin
Keyword(s):  
High Voltage ◽  
Input Voltage ◽  
Critical Parameters ◽  
Test Results ◽  
Voltage Converter ◽  
Low Loss ◽  
Power Circuit ◽  
Transient Phenomena ◽  
Snubber Circuit ◽  
Performance Capability

High-voltage converter employing IGCT switches (VDC=2800 V) for traction application is presented. Such a power traction drive operates with an unstable input voltage over 2000⋯4000 V DC and with an output power up to 1200 kW. The original power circuit of the high-voltage converter is demonstrated. Development of the attractive approach to designing the low-loss snubber circuits of the high-frequency IGCT switches is proposed. It is established on the complex multilevel analysis of the transient phenomena and power losses. The essential characteristics of the critical parameters under transient modes and the relation between the snubber circuit parameters and the losses are discussed. Experimental results for the prototype demonstrate the properties of new power circuit. The test results confirm the proposed high-voltage converter performance capability as well as verifying the suitability of the conception for its use in the Russian suburban train power system and other high-voltage applications.

Selecting the Switching Frequency of the 6500 V IGBT High Voltage DC Converter

2021 ◽  
pp. 21-27
Author(s):  
Sergey I. Volskiy ◽  
◽  
Yuri Yu. SKOROKHOD ◽  
Nikolay Echkilev ◽  
◽  
...  
Keyword(s):  
High Voltage ◽  
High Frequency ◽  
Electrical Energy ◽  
Input Voltage ◽  
Switching Frequency ◽  
Energy Transformation ◽  
Power Losses ◽  
Voltage Converter ◽  
Passenger Cars ◽  
Power Circuit

The high-voltage converter with the input voltage of 3000 V DC is considered for use as a power supply for auxiliary circuits of commuter electric trains and passenger cars that are used on Russian railways. The limitations on the use of semiconductor devices in converters with an input voltage of 3000 V are shown. The power electrical circuits of the input units of the considered high-voltage converters are shown when using of 1700 and 6500 V IGBT. The expressions for calculating the power losses and the algorithm for selecting the switching frequency of 6500 in IGBT are given. This article is of interest to developers of high-voltage DC converters with an input voltage of 3000 V and higher, which choose IGBT for the power circuit of input units with using the high frequency principle of the electrical energy transformation.

An Analysis of On-Bord High-Voltage Converters of Single-Phase Alternating Current with Increased Miroelectric Power Factor

2020 ◽  
Vol 10 (10) ◽  
pp. 44-51
Author(s):  
Yury Yu. SKOROKHOD ◽  
◽  
Sehgey I. VOL’SKIY ◽  
Keyword(s):  
High Voltage ◽  
Single Phase ◽  
Input Current ◽  
Voltage Converter ◽  
Input Unit ◽  
Power Circuit ◽  
Electrical Systems ◽  
Static Converters ◽  
Technical Requirements

The power circuit arrangements of on-board high-voltage static converters fed from a 3000 V AC single-phase network that in the general case produce multi-channel AC and DC output voltages are considered. The basic technical requirements posed to such converters are formulated. The general structural diagram of high-voltage converters with improved electric power consumption quality is given. Possible power circuit arrangements for the high-voltage converter input unit based on single-phase input current correction devices are considered. A classification and criteria for comparative evaluation of the possible power circuit arrangements of these devices are proposed. The information presented in the article will be of interest for specialists engaged in designing on-board electrical systems involving high-voltage converters that must comply with strict requirements for the quality of consumed single-phase input current.

Study of DC System of UHV Converter Substation

2014 ◽  
Vol 577 ◽  
pp. 531-535
Author(s):  
Ping Chen ◽  
Lei Wu ◽  
Zhan Tao Zhang
Keyword(s):  
High Voltage ◽  
System Configuration ◽  
Voltage Converter ◽  
Power Circuit ◽  
Switching Device ◽  
Dc System ◽  
Dc Power ◽  
Automatic Switching ◽  
Selection Of ◽  
Ultra High Voltage

Base on the conclusion of the DC system configuration of UHV (Ultra-high Voltage) converter substation. Analysis the settings of the 3rd DC power circuit, research on selection of automatic switching device. Provide valuable reference for the design of DC system of substation in DC transmission projects.

Application of Dual Switch Flyback Converter in Three-Phase Photovoltaic Inverter

2014 ◽  
Vol 986-987 ◽  
pp. 1759-1762
Author(s):  
Chun Yang Yi ◽  
Tian Fa Liao ◽  
Qian Jin Ma ◽  
Chang Wen Dong ◽  
Jia Xiang Xue
Keyword(s):  
High Voltage ◽  
Input Voltage ◽  
Leakage Inductance ◽  
Flyback Converter ◽  
Pv Inverter ◽  
Power Switch ◽  
Auxiliary Power ◽  
Snubber Circuit ◽  
Three Phase ◽  
Voltage Stress

Auxiliary power of Three-phase photovoltaic inverter is supplied by solar cells with wide input ranging from 140V to 1000V.The conventional single-switch flyback converter exists too high voltage stress in power switch to be applied in this inverter. This paper presents a dual-switch flyback converter in which the voltage stress of each switch is slightly higher than the input voltage when switches turn off, at the same time , the leakage inductance energy is recycled back into the inputside; otherwise, this topology needs no snubber circuit, so it is much more efficient than single switch flyback. The dual switch flyback converter with seven outputs is successfully applied in 10KW three phase PV inverter.

scholarly journals Portable DC Supply Based on SiC Power Devices for High-Voltage Marx Generator

Electronics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 313
Author(s):  
Jacek Rąbkowski ◽  
Andrzej Łasica ◽  
Mariusz Zdanowski ◽  
Grzegorz Wrona ◽  
Jacek Starzyński
Keyword(s):  
High Voltage ◽  
Specific Area ◽  
Input Voltage ◽  
Marx Generator ◽  
Power Devices ◽  
Laboratory Setup ◽  
High Voltage Gain ◽  
Main Components ◽  
Two Stages ◽  
Very High

The paper describes major issues related to the design of a portable SiC-based DC supply developed for evaluation of a high-voltage Marx generator. This generator is developed to be a part of an electromagnetic cannon providing very high voltage and current pulses aiming at the destruction of electronics equipment in a specific area. The portable DC supply offers a very high voltage gain: input voltage is 24 V, while the generator requires supply voltages up to 50 kV. Thus, the system contains two stages designed on the basis of SiC power devices operating with frequencies up to 100 kHz. At first, the input voltage is boosted up to 400 V by a non-isolated double-boost converter, and then a resonant DC-DC converter with a special transformer elevates the voltage to the required level. In the paper, the main components of the laboratory setup are presented, and experimental results of the DC supply and whole system are also shown.

Design and Implementation of a New Drive Circuit of Monolithic Emitter-Switching Bipolar Transistor (ESBT)

2014 ◽  
Vol 668-669 ◽  
pp. 812-817
Author(s):  
De Hui Lin ◽  
Ping Lou ◽  
Hui Pin Lin
Keyword(s):  
High Voltage ◽  
Input Voltage ◽  
Bipolar Transistor ◽  
Soft Switch ◽  
Design And Implementation ◽  
Three Phase ◽  
Drive Circuit ◽  
Driving Circuit ◽  
Switch Circuit

This paper introduces a kind of monolithic emitter switched bipolar transistor (ESBT) for three-phase rectifier applications and other high voltage applications. This paper proposes an improved driving circuit, combining the soft switch circuit. We made a flyback circuit prototype which the rated power is 80W, and the maximum input voltage is 800V, and compared with the existing driving circuit.

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