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TitleA study of secondary winding designs for the two-coil Tesla transformer
LanguageEnglish
File Size10.4 MB
Total Pages176
Document Text Contents
Page 1




LoughboroughUniversity
InstitutionalRepository
Astudyofsecondary
windingdesignsforthe
two-coilTeslatransformer
ThisitemwassubmittedtoLoughboroughUniversity'sInstitutionalRepository
bythe/anauthor.
AdditionalInformation:

ADoctoralThesis.Submittedinpartialfulfilmentoftherequirements
fortheawardofDoctorofPhilosophyofLoughboroughUniversity.
MetadataRecord:
https://dspace.lboro.ac.uk/2134/14375
Publisher:
c

RichardMilesCraven
Pleasecitethepublishedversion.



Page 2




This item was submitted to Loughborough University as a PhD thesis by the author and is made available in the Institutional Repository
(https://dspace.lboro.ac.uk/) under the following Creative Commons Licence conditions.

For the full text of this licence, please go to:
http://creativecommons.org/licenses/by-nc-nd/2.5/



Page 88




Theoryandmodellingofsecondarycoils
0%resonatormode
f
1
f
3
f
5
NECmodelledresonantmodefrequency,
MHz
6.788
16.756
24.417
measuredresonantmodefrequency,
MHz
6.397
15.597
22.621
difference,
MHz
0.391
1.159
1.796
%error
+6.1
+7.4
+7.9
Table4.3:n=56.30%resonatormodesmodelledinNEC&compared
withmeasuredresults
comparingcomputersimulationwithlaboratorymeasurement.
Giventhatthemeanerrorbetweenthemeasuredandmodelled
modefrequenciesforthe0%resonatorwasreasonablysmallat7%,it
wasdecidedthatcontinuedmodellingresultswouldbevalid.Further
NECmodellingwasimplementedtoillustratethecurrentandvoltage
distributionsalongthewindings,anddistributionofthe
E
and
H

aroundthewindingsatthevariousmodefrequencies,forthe0%coil
andforcoilswheren=56.3turnsbutwiththeupper10%,33%etc.
counter-wound.Interpretationofnumerous
k
NECplots(see
(
4.14
)forexamples)assistedinelucidationanddevelopmentofthe
hypothesispresentedinsection(
4.1
).Theassociated
E
and
H

surroundingthewindingsateachmodefrequencyweremappedby
resolvingthevectorrepresentingeachpointintoitsCartesian
componentsinaplane(
x;z
)passingthroughtheaxisofthecoil(i.e.
at
y
=0
).Each
H
wassummedtoshowthetotalineachcase
andtheresolved(
x;y;z
)componentswereplotted.Manipulationvia
GIMP,afreetoolfoundinmostLinuxdistributionsformanipulating
theappearanceofgraphic,renderedtheplotssuitablefor
paperprinting.
k
>100currentandvoltagedistributionsand
E
and
H
plotswerecreatedfor
the56.3turnmodels
73



Page 89




Theoryandmodellingofsecondarycoils
(a)0%
f
1
H
(b)0%
f
3
H
(c)33%
f
1
H
(d)33%
f
3
H
Figure4.14:SomeexampleHddistributions(
x
axisscaleis

0.75
m
to
+
0.75
m
,
y
axisscaleis0to1.5
m
andstrengthcolourscale
is0to200
A=m
)
74



Page 175




REFERENCES
[131]
IEEE.Standardoftermsforantennas,1993.
(2citationson2pages:
139
and
140
)
[132]
H.A.Wheeler.Smallantennas.
AntennasandPropagation,
IEEETransactionson
,23(4):462Œ469,1975.
(2citationson2pages:
139
and
142
)
[133]
IEEE.Standardtestproceduresforantennas,1980.
(2citationson2pages:
140
and
141
)
[134]
J.S.Seybold.
IntroductiontoRFPropagation
.
Wiley-Interscience,2005.
(2citationson2pages:
140
and
141
)
160



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EndNote
TheelectronicPDFversionofthisthesiscontainsinternalficlickablefl
hyperlinksbetweenthevariouschaptersandsectionsandsoon.All
referencesaresimilarlyhyperlinked;theendofeachreferenceentry
showsthefibackreferencesfl,whichhyperlinkbacktothereferring
page(s)wherethereferenceiscited.AllURLswerecorrectas
ofJanuary2014.

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