NDLI: Three-phase thyristor controlled reactor using two sets of delta connected switches with low current harmonics

Content Provider	IET Digital Library
Author	Maiti, Dipten Mukhopadhyay, Susovan Biswas, Sujit K.
Abstract	This work presents a three-phase thyristor-controlled reactor (TCR), which makes use of two constituent banks of controlled reactors, with coordinated control of the triggering angle of both the banks. The first reactor bank has a set of ‘delta’ connected back-to-back thyristor switches with a balanced set of reactors in series with each switch, while the second reactor bank also has back-to-back thyristor switches in ‘delta’ connection but with a balanced set of reactors in series with each line. It is demonstrated that this arrangement prevents some major current harmonics in the supply line by proper choice of the maximum kVAr ratio between the two reactor banks. The use of delta connected switches in both banks reduces the current rating of the switches. Hence, without using any phase-shifting isolation transformer or filters, the proposed technique permits control of reactive power over a reasonable range, with a low current total harmonic distortion meeting existing harmonics standards. Simple construction and operation of the proposed TCR make it an attractive and cheaper solution. The modelling, analysis and performance assessment of the new TCR are presented.
Starting Page	4016
Ending Page	4022
Page Count	7
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 15, Dec (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5020
Journal	IET Power Electronics
Publisher Date	2019-09-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Back-to-back Thyristor Switches Balanced Set Constituent Banks Control of Electric Power System Controlled Reactors Coordinated Control Strategy Delta Connected Switches Delta Connection Harmonic Distortion Harmonics Low Current Harmonics Low Current Total Harmonic Distortion Phase Thyristor Controlled Reactor Phase-shifting Isolation Transformer Power Converter Power Supplies to Apparatus Power Supply Quality Power System Harmonics Reactive Power Reactor Bank Reactors (Electric) TCR Three-phase Thyristor-controlled Reactor Thyristor Application Thyristors Transformer And Reactors
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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