scholarly journals High-voltage isolation transformer for sub-nanosecond rise time pulses constructed with annular parallel-strip transmission lines

2011 ◽  
Vol 82 (7) ◽  
pp. 074701
Author(s):  
Akira Homma
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Rise Time ◽  
Parallel Strip ◽  
Isolation Transformer

scholarly journals High-voltage pulse rise time decreasing using transmission coaxial and spiral lines with ferrite

2021 ◽  
Vol 2094 (2) ◽  
pp. 022062
Author(s):  
R K Sobyanin ◽  
I V Romanchenko ◽  
K V Afanasyev
Keyword(s):  
Shock Wave ◽  
High Voltage ◽  
Transmission Lines ◽  
Rise Time ◽  
Voltage Pulse ◽  
High Voltage Pulse ◽  
Pulse Rise Time ◽  
Electromagnetic Shock ◽  
Electromagnetic Shock Wave ◽  
Short Rise Time

Abstract This article presents the results of a study of the formation of a short rise time of a powerful nanosecond 410 kV pulse. Ferrite filled coaxial transmission lines with standard inner conductor and construction in the form of a spiral are designed. The sharpening of the pulse occurs due to the appearance of an electromagnetic shock wave in the ferrite. The value of the rise time at the level of 0.1 - 0.9 has been decreased from 4.5 to 2.5 ns.

Analysis and Design of 3.3 kV IGBT Based Three-Level DC/DC Converter with High-Frequency Isolation and Current Doubler Rectifier

2009 ◽  
Vol 25 (25) ◽  
pp. 103-108
Author(s):  
Dmitri Vinnikov ◽  
Tanel Jalakas ◽  
Indrek Roasto
Keyword(s):  
High Voltage ◽  
High Frequency ◽  
Power Converter ◽  
Rolling Stock ◽  
Analysis And Design ◽  
Auxiliary Power ◽  
Igbt Modules ◽  
Isolation Transformer ◽  
New Generation ◽  
Generation Power

Analysis and Design of 3.3 kV IGBT Based Three-Level DC/DC Converter with High-Frequency Isolation and Current Doubler RectifierThe paper presents the findings of a R&D project connected to the development of auxiliary power supply (APS) for the high-voltage DC-fed rolling stock applications. The aim was to design a new-generation power converter utilizing high-voltage IGBT modules, which can outpace the predecessors in terms of power density, i.e. to provide more power for smaller volumetric space. The topology proposed is 3.3 kV IGBT-based three-level neutral point clamped (NPC) half-bridge with high-frequency isolation transformer and current doubler rectifier that fulfils all the targets imposed by the designers. Despite an increased component count the proposed converter is very simple in design and operation. The paper provides an overview of the design with several recommendations and guidelines. Moreover, the simulation and experimental results are discussed and the performance evaluation of the proposed converter is presented.

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