ee535 wind turbines (1).ppt

8/9/2019 EE535 Wind Turbines (1).ppt

1/17

DUBLIN CITY UNIVERSITY

School of Electronic Engineering

EE535

Wind Turbine

!"rti"l Lecture Note


2/17


3/17

$itor%

Wind /"chine (ere ued in !eri" " e"rl% " &00 B*C*

Thi t%'e of /"chine (" introduced into the Ro/"n E/'ire b% &50-*D* $o(e.er1 the firt 'r"ctic"l (ind/ill (ere built in Sit"n1Ir"n1 fro/ the 2th centur%* Thee (ere .ertic"l ",le (ind/ill1(hich h"d long .ertic"l dri.eh"ft (ith rect"ngle h"'ed bl"de*

"de of i, to t(el.e "il co.ered in reed /"tting or cloth /"teri"l1thee (ind/ill (ere ued to grind corn "nd dr"( u' ("ter1 "nd(ere ued in the /illing "nd ug"rc"ne indutrie

B% the #4th centur%1 Dutch (ind/ill (ere in ue to dr"in "re" of the Rhine

Ri.er delt"* In Den/"r b% #600 there (ere "bout &500 (ind/ill for/ech"nic"l lo"d uch " 'u/' "nd /ill1 'roducing "n eti/"tedco/bined 'e" 'o(er of "bout 30 W*


4/17

Dutch Wind/ill


5/17

he firt no(n electricit% gener"ting (ind/ill o'er"ted (" " b"tter% ch"rging /"chine intn #772 b% 8"/e Bl%th in Scotl"nd*

he firt (ind/ill for electricit% 'roduction in the United St"te (" built in Cle.el"nd1 9hio h"rle : Bruh in #7771 "nd in #607 there (ere 2& (ind;dri.en electric gener"tor fro/ 5

o &5 W*he l"rget /"chine (ere on &4 /


6/17

!o(er

EA *5.&

!o(er in free;flo(ing (ind

! A *5d-.3

!o(er fro/ Turbine!t A *5d-C.3


7/17

$-WT


8/17

$-WT -d."nt"ge

V"ri"ble bl"de 'itch1 (hich gi.e the turbine bl"de the o'ti/u/ "ngle of"tt"c* -llo(ing the "ngle of "tt"c to be re/otel% "duted gi.e gre"tercontrol1 o the turbine collect the /",i/u/ "/ount of (ind energ% forthe ti/e of d"% "nd e"on*

The t"ll to(er b"e "llo( "cce to tronger (ind in ite (ith (indhe"r* In o/e (ind he"r ite1 e.er% ten /eter u'1 the (ind 'eedc"n incre"e b% &0F "nd the 'o(er out'ut b% 34F*

$igh efficienc%1 ince the bl"de "l("% /o.e 'er'endicul"rl% to the (ind1recei.ing 'o(er through the (hole rot"tion* In contr"t1 "ll .ertic"l ",i(ind turbine1 "nd /ot 'ro'oed "irborne (ind turbine deign1 in.ol.e

."riou t%'e of reci'roc"ting "ction1 reGuiring "irfoil urf"ce tob"ctr"c "g"int the (ind for '"rt of the c%cle* B"ctr"cing "g"int the(ind le"d to inherentl% lo(er efficienc%*


9/17

$-WT Di"d."nt"ge

need to be /ounted on " high to(er (ith high tr"n'ort1 int"ll"tion H /"inten"ncecot

.er% inefficient "t lo( (ind 'eedunu"ble "t high (ind 'eed1 o ("ting the /ot ueful high energ% (ind

>Energ% i 'ro'ortion"l to (ind .elocit% [email protected]/ent"ll% 'roble/"tic "t the bet loc"tionnoie H R: interferencetr"n'ort"tion cot1 e' for e,'ort 'otenti"lneed to be 'ointed "t (ind1 (hich incre"e cot*


10/17

1

V-WT


11/17

V-WT ub;t%'eD"rrieu (ind turbine

JEggbe"terJ turbine1 or D"rrieu turbine1(hich (ere n"/ed "fter the :rench in.entor1Keorge D"rrieu* The% h".e good

efficienc%1 but 'roduce l"rge torGue ri''le"nd c%clic tre on the to(er1 (hichcontribute to 'oor reli"bilit%* -lo1 the%gener"ll% reGuire o/e e,tern"l 'o(er

ource1 or "n "ddition"l S".oniu rotor1 tot"rt turning1 bec"ue the t"rting torGue i.er% lo(*


12/17

1

V-WT ub;t%'e

S".oniu (ind turbineThee "re dr"g;t%'e de.ice (ith t(o


13/17

1

V-WT "d."nt"ge

Lower construction costas compared to HAWTs because there is no need to build a massie to!erstructure to support the hea" HAWT blades and turbine assembl"#

Easier to maintainas the moin$ parts are located near the $round#

c% Lower wind start-up speedsthan HAWTs& T"picall"' the" start creatin$ electricit" at 6 m&p&h&The e((ectie cut)in speed can be made een lo!er b" cleer (unnellin$#d% Less likely to break in highwindsas the" usuall" hae a lo!er Tip)*peed +Wind)*peed ratio&

Also' our ,AWT can be partiall" shielded b" the moable doors#e% Low heightuse(ul at locations !here la!s do not permit structures to be placed hi$h#(% Hilltops' rid$elines and passes can hae (aster !inds near the $round because the windis (orced

up a slope or funnelledinto a pass and into the path o( ,AWTs situated close to the $round#$% Does not need to turnto (ace the !ind i( the !ind direction chan$es ma-in$ them ideal inturbulent !ind conditions& Thus yaw drive not needed' lo!erin$ cost#h% ,AWT blades are easil" seen b" birds#

i% ,AWTs are .uieter and inter(ere less !ith T,' radio / radar si$nals#% ,AWT s"stems can also directl" drie pumps !hich ma" be used to store !ind $enerated ener$"&


14/17

1

V-WT di"d."nt"ge

Current V-WT "re less efficient than HAWTs" o/e bl"de "l("% o''oe (ind flo(Do not take advantage of the stronger wind"t higher ele."tion " the $-WT do* ) - V-WT th"t ue gu%;(ire to hold it in 'l"ce 'ut tre on the botto/ be"ring " "ll the

(eight of the rotor i on the be"ring* Ku% (ire "tt"ched to the to' be"ring incre"edo(n("rd thrut in (ind gut* Sol.ing thi 'roble/ reGuire " u'ertructure to hold " to'be"ring in 'l"ce to eli/in"te the do(n("rd thrut of gut e.ent in gu% (ired /odel*

) The tre in e"ch bl"de due to (ind lo"ding ch"nge ign t(ice during e"ch re.olution "

the "''"rent (ind direction /o.e through 3?0 degree* Thi re.er"l of the treincre"e the lielihood of bl"de f"ilure b% f"tigue* ) While V-WT '"rt "re loc"ted on the ground1 the% "re "lo loc"ted under the (eight of

the tructure "bo.e it1 (hich c"n /"e ch"nging out '"rt ne"rl% i/'oible (ithoutdi/"ntling the tructure if not deigned 'ro'erl%*

) $".ing rotor loc"ted cloe to the ground (here (ind 'eed "re lo(er due to (ind he"r1V-WT /"% not 'roduce " /uch energ% "t " gi.en ite " " $-WT (ith the "/efoot'rint or height*


15/17

1

DCU V-WT


16/17

1

Wind :unnelling


17/17

1

-d."nt"ge of ne( WT

"% be /"de in Irel"ndLo(er int"ll"tion H tr"n'ort cot

EfficientLe .iu"ll% obtrui.e!oible future lin;u' (ith SoI

ee535 wind turbines (1).ppt

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