The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic

Bibliographic Details
Main Author:	Clark, Matthew A.
Language:	English
Published:	Wright State University / OhioLINK 2010
Subjects:	Electrical Engineering Fuzzy Logic Control Power SCR Harmonics Substations
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=wright1271111941

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spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-wright12711119412021-08-03T06:17:12Z The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic Clark, Matthew A. Electrical Engineering Fuzzy Logic Control Power SCR Harmonics Substations High power silicon controlled rectifiers (SCR) are used in the application of infraredradiation testing. A case study has been performed on a department of defense facilityutilizing SCRs to transfer electrical energy to thermal energy. The facility is capable ofgenerating up to 5000 °F across large cross-sectional areas, requiring tens of megawattsof power. The combination of high power, unbalanced loads, and SCR switching generatehigh harmonic disturbances that offer significant challenges for conventional linearcontrol systems. In addition, unbalanced three-phase distribution systems are difficult tomodel, specifically during switching transients. Fuzzy logic is used to characterize thenon-linear plant dynamics, control the system output, and reduce harmonics. Although theuse of fuzzy logic for harmonic reduction has been used extensively in the power industry,most applications focus on compensating for harmonic disturbance rather than avoiding it.Harmonic compensation adds hardware in the system, which adds maintenance costs andinefficiency. This thesis introduces a technique to eliminate harmonic content in the controlloop without adding additional hardware. A simulation of the system was created andfuzzy logic was used to characterize the behavior of the simulation. The simulation resultsdemonstrated the non-linear control problem and identified key harmonic areas to avoid.A fuzzy proportional-integral controller along with a fuzzy harmonic reduction controlleris implemented in this thesis to improve the control response while avoiding harmful harmonicinterference. The fuzzy harmonic reduction controller yielded a hybrid pulse widthmodulation output that eliminated the most harmful harmonics while maintaining closedloop control. 2010-04-15 English text Wright State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=wright1271111941 http://rave.ohiolink.edu/etdc/view?acc_num=wright1271111941 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Electrical Engineering Fuzzy Logic Control Power SCR Harmonics Substations
spellingShingle	Electrical Engineering Fuzzy Logic Control Power SCR Harmonics Substations Clark, Matthew A. The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic
author	Clark, Matthew A.
author_facet	Clark, Matthew A.
author_sort	Clark, Matthew A.
title	The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic
title_short	The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic
title_full	The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic
title_fullStr	The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic
title_full_unstemmed	The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic
title_sort	harmonic distortion reduction of phase-angle fired scrs feeding a resistive load using fuzzy logic
publisher	Wright State University / OhioLINK
publishDate	2010
url	http://rave.ohiolink.edu/etdc/view?acc_num=wright1271111941
work_keys_str_mv	AT clarkmatthewa theharmonicdistortionreductionofphaseanglefiredscrsfeedingaresistiveloadusingfuzzylogic AT clarkmatthewa harmonicdistortionreductionofphaseanglefiredscrsfeedingaresistiveloadusingfuzzylogic
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The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic

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