Quasi-static transient response of a covered permeable inhomogeneous cylinder to a line current source

1972 ◽  
Vol 96 (1) ◽  
pp. 140-156
Author(s):  
Upendra Raval
Keyword(s):  
Transient Response ◽  
Current Source ◽  
Line Current ◽  
Inhomogeneous Cylinder

scholarly journals Multi-Pulse SCR Rectifiers

2021 ◽  
Author(s):  
Mei Li
Keyword(s):  
Experimental Verification ◽  
Current Source ◽  
Harmonic Distortion ◽  
Motor Drives ◽  
Line Current ◽  
High Voltage Direct Current ◽  
Battery Chargers ◽  
Power Battery ◽  
Harmonic Elimination ◽  
Three Phase

This thesis presents the introduction, analysis and experimental verification of the six-pulse SCR rectifier and multi-pulse SCR rectifiers. As a fundamental three-phase controllable ac-dc converter, the six-pulse SCR rectifier is widely used in industry. However, it generates high Total Harmonic Distortion (THD) in the line current. One of the solutions is to use multi-pulse rectifiers. Multi-pulse rectifiers could be classified into the 12-, 18-, and 24-pulse configurations. Application examples include high voltage direct current transmission systems, high power battery chargers and load commutated current source inverter powered motor drives. In this thesis, the six-, 12-, 18- and 24-pulse SCR rectifiers with inductive and capacitive loads are introduced. The line current THD and the input PF of various rectifiers are investigated. The principle of the harmonic elimination through phase-shifting transforms is analyzed by Fourer analysis and positive/negative sequence analysis. The experimental verification is accomplished on a prototype of the 12-pulse SCR recitifier.

On the image representation of the quasi-static fields of a line current source above the ground

1969 ◽  
Vol 47 (23) ◽  
pp. 2731-2733 ◽  
Author(s):  
James R. Wait ◽  
Kenneth P. Spies
Keyword(s):  
Half Space ◽  
Image Representation ◽  
Current Source ◽  
Image Source ◽  
Line Current

It is shown that the influence of the homogeneous conducting half-space can be represented approximately in terms of an image source located at a complex depth.

scholarly journals Experimental Evaluation on the Influence of RCD Snubbers in a 3-Level Thyristor Based MLCR CSC

2016 ◽  
Vol 2016 ◽  
pp. 1-18
Author(s):  
Bhaba P. Das ◽  
Neville R. Watson ◽  
Yonghe Liu
Keyword(s):  
Experimental Evaluation ◽  
Output Voltage ◽  
Current Source ◽  
Harmonic Distortion ◽  
Experimental Results ◽  
Input Current ◽  
Trade Off ◽  
Current Harmonic ◽  
Line Current ◽  
Snubber Circuit

Multilevel current reinjection (MLCR) concept provides self-commutation capability to thyristors, enabling thyristor based current source converters (CSC) to operate under negative firing angle. It also lowers the input current harmonic distortion. This is achieved by using an auxiliary reinjection bridge. Extensive experimental results are presented in this paper to analyse the performance of the 3-level MLCR CSC for different snubber components across the reinjection bridge. The trade-off in the choice of the snubber circuit is illustrated, with its influence on the AC side line current and DC side output voltage of the 3-level MLCR CSC.

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