Dsign and Simulation of Hybrid Wind Disl Systm Softwar Prof.Sursh Mashyal (Corrsponding author Maratha Mandal Enginring Collg R.S.No.104 Halbhai, P.O. Nw Vantmuri ia Kakati, Blgaum-591113, Karnataka Stat, India Tl:+9194801960 E-mail: mashyal_mch@mmc.du.in Dr. T. R. Anil Gogt Institut of Tchnology, Udymbag, Blgaum-591113, Karnataka Stat, India Tl:+919448863763 E-mail: tranil@git.du Th rsarch is financd by Vision Group for Scinc and Tchnology(VGST Gornmnt of Karnataka Abstract Th work dals with Hybrid wind disl systm is dsignd and th oprations of diffrnt systm constitunts lik windmill, disl ngin, load, Flow path of powr and battry ar simulatd which aid to prdict th prformanc of Hybrid systm. Th dsignd softwar can also usd for monitoring of xisting hybrid wind disl ngin systm. Visual basic- 6 softwar is usd for writing th program to dsign wind mill of particular location and Photoshop softwar is usd to built th modl hybrid wind disl systm. Th dsignd softwar rsults ar carrid out followd with xprimntal data to alidat th analysis. Th comparison shows a clos agrmnt btwn rsults obtaind from dsignd softwar modul and rsults obtaind from xprimntal stup. Kywords: Cut-in spd, Ratd spd, Furling spd, Kintic nrgy. 1. Introduction Th qust for powr is an intgral part of human xistnc in th prsnt day as it is closly intrconnctd to th standard of liing of th populac. Thr is an r-incrasing dmand for powr iwing th pac at which population and conomy is growing. This dmands for xploration of nwr nrgy sourcs, which ar clanr and also rliabl. Wind nrgy is an important contndr in this rspct but nds masurs to mak it rliabl. Th wind hybrid systms proid th ncssary adantag to orcom th difficultis of wind standalon systms.. Thortical analysis.1 Elctrical powr out put Wind posssss nrgy by irtu of its motion. Any dic capabl of slowing down th mass of moing air, lik a sail or propllr, can xtract part of th nrgy and conrt it into usful work. Thr factors dtrmin output from a wind nrgy conrtr: thy ar wind spd, Cross sction of wind swpt by rotor and Orall conrsion fficincy of rotor, transmission systm and gnrator or pump. No dic, howr wll dsignd, can xtract all of th wind s nrgy bcaus th wind would ha to b brought to a halt and this would prnt th passag of mor air through th rotor. Th powr in th wind can b computd by using th concpt of kintics. Th wind mill works on th principl of conrting kintic nrgy of th wind to mchanical nrgy. W know that powr is qual to nrgy pr unit tim. Th nrgy aailabl is th kintic nrgy of th wind. Th kintic nrgy of any particl is qual to on half its mass tims th squar of its locity, or ½ m. Th amount of air passing in unit tim, through an ara A, with locity V, is AV, and its mass m is qual to its olum multiplid by its dnsity r of air, or m=rav. Substituting this alu of th mass in th xprssion for th kintic nrgy, w obtain, kintic nrgy is. 1 3 r A. Th lctrical powr out put (P is basically dpnds on th wind turbin charactristics lik cut-in spd, ratd spd and furling or cut-out spd.[3] P = 0 ( < c 55
P = a+ b P = P R P = 0 ( c ( R ( > F R < < Whr th cofficints a and b ar gin by PR c PR a= and b= c - R R - c And th ratd lctrical powr output at ratd wind spd is xprssd as Whr C p is powr coff = F P R = 1 C p h r A 3 R Watt powr xtractd by windmill powr aailabl in wind stram. Rlation btwn V c, V R and V F P R Powr O/P V c V R V F Wind Spd Figur 1: Wind turbin powr /s wind spd Wind machins ha oprating charactristics, such as cut-in, ratd & Furling spd Shown in Fig 1. Cut-in spd (V c : is minimum wind spd at which turbin starts gnrating powr. Ratd spd (V R : spd at which turbin will gnrat dsignd or ratd powr. At wind spds btwn cut-in spd and ratd spd, powr out put from turbin incrass with wind spd and out put of machin lls off abo ratd spd. Furling spd (V F : corrsponds to high wind spds during which th turbin cass to gnrat powr and is shut down. Th wind spd at which th shut down occurs is also calld as cut-out spd and is th safty fatur which protcts wind turbin from damag. Slcting a ratd wind spd V R is an important part of wind turbin dsign. This slction basically dtrmins cut-in spd and also imposs crtain constraints on furling spd. Th instmnt in turbin will b proportional to turbin ara so maximizing arag powr will minimiz cost/unit of nrgy producd. If ratd spd is chosn too low, it will los nrgy in highr wind. If ratd spd is too high, th turbin will sldom oprat at capacity and will los much of nrgy in lowr wind spd. For a gin data of wind spd at a particular location, w can slct Vc, V R and V F to maximiz arag powr, and thrby maximiz th total nrgy production. Howr, if ralistic rsults ar to b xpctd. Th wind must contain nough powr at cut-in spd to orcom all th systm losss. Rlation Btwn V c, And V R : V c =0.31V R Rlation Btwn V F, And V R : V F =V R Rlation Btwn V,R And V ag : V R =V ag Whr V ag is man wind spd Battry status in Ahr is dtrmind using th following rlationship Enrgy = powr x tim (1 But powr is th product of oltag and currnt i. Powr= oltag x currnt ( Substitut q. ( into q. ( 1 w gt Enrgy =Voltag * currnt *tim Enrgy currnt * tim = Ahr Voltag 3. Softwar modul rsults 3.1 Input paramtrs rquird for softwar Th input paramtrs rquird to run th softwar ar Wind spd in m/s, Tim in hrs, and Load in watt. 56
3. Output of th Softwar Simulat opration of diffrnt systm constitunts. Various charts iz. Load s Tim Wind spd s Tim Powr output s Tim. Battry status s Tim. Enrgy stord s Tim. Currnt total powr gnratd by wind mill in Watts. Battry status aftr ry intral (10min in Ahs. Diamtr of th turbin in mtr. Total run tim of disl ngin. Total run tim of Hybrid Wind-Disl systm. Finally producs brif rport. Th main window of Hybrid wind disl powr systm softwar modul is shown in Fig. It contains diffrnt constitunts lik windmill, disl ngin and battry with thr txt boxs in th top row of th main window whr it rquird to ntr th input data lik wind spd in m/s, Tim in min or hr and rquird load in watt of that particular tim. Aftr ntring th input data of any locality, run th softwar by clicking a grn arrowhad button, which is positiond at top right cornr of th softwar modul. Th softwar compils and gis diffrnt dsign paramtrs of systm as shown in Fig. (. Figur : Main window indicating rsults of softwar Th main application of th softwar is onc th input data of particular locality lik wind spd, tim and load is ntrd. Th softwar not only simulat th diffrnt constitunts of th systm but also bfor installing th actual hybrid wind disl systm th softwar gis optimum wind disl charactristics lik cut-in, ratd and furling spd of th wind mill rquird. Powr producd by wind turbin on th basis of cut-in, ratd and furling spd of dsignd wind mill, and total run tim of th disl ngin by this alu w can prdict th total consumption disl to fulfill th rmaining load. Anothr main application of dlopd softwar that it is possibl to monitor xiting hybrid systm continuously. 3.3 Various charts obtaind from softwar Th som of arious charts obtaind from softwar aftr giing th input paramtrs ar as follows, 57
Figur 3: Powr output /s Wind spd Figur 4: Load /s Tim Figur 5: Battry Status s Tim Tabl 1 Comparison of Softwar and Exprimntal rsults of wind turbin charactristics Softwar Expt % Error Cut in spd (m/s 3. 3 6 Ratd spd (m/s 11.1 11 1.7 Furling spd (m/s 4.4 5 Hnc from Tabl 1 w can conclud that thr is good agrmnt with in 6 % rror, btwn th softwar and xprimntal rsult of wind turbin charactristics, which is thought to b quit accptabl. 600 Comparison of softwar & xprimntal rsults Po wr Out put, W 500 400 Softwar rsult Exprimntal rsult 300 00 100 0 4 4.6 4.7 5.3 5.3 5.4 6.3 6.7 8.1 Wind spd (m/s Figur 6: Comparison of Softwar and Exprimntal powr output Th Fig.ur 6 shows th graph of comparison of softwar and xprimntal obtaind rsult. Th comparison shows a clos agrmnt with in 5 % rror, which is thought to b quit accptabl. 58
4. Conclusion Th softwar dlopd simulats opration of Wind disl hybrid systm with constitunts lik wind mill, Disl ngin, load and battry. It can b fficintly usd for th monitoring of xisting systm. rspct to th Th softwar aids in dsign and analysis of hybrid wind disl systm and prdicts wind turbin charactristics and othr faturs lik powr gnration, battry status, total run tim of disl ngin, wind turbin powr bfor actual installation of systm on sit. Rfrncs [1] G.M. Joslin Hrbrt, A riw of wind nrgy tchnologis, Rnwabl and sustainabl nrgy riws, 8(006 pg 180-30 [] A. N. Clik, A simplifid modl for stimating yarly wind fraction in hybrid wind disl nrgy systm, Rnwabl nrgy 31(006 pg 105-118. [3] Iqbal M. T. Simulation of a small wind ful cll hybrid nrgy systm Rnwabl nrgy 8(003 pg 511-5. 59
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