ARTICLE / MAKALE EXISTING PROBLEM$ p tP h o o a w w t e e t r h r e i e n l d p e r u c im s tr t o r a y n r , y ic e s t s e p hc e a h c v n i e o a l l o l b y g e y e re n u c s e a e n n d t l A y, . c p ü h ui l n l s le e e s r w e hi a e d s e th o l n o m f t o o th r d e u th la w is t i i n o is d n (i nPtWe nMd e) du st oi n gm ef aest t -t shwe i tscphei nc gi f i ct r ad ne smi sat nodr ss, owf aws i nndo tt uorrbi gi ni nea l l y tphoawt ePrWc oMn vd ee vr si ci oens. oFuotrp ui ntsitsa nocf tee,n t hs uei t"apbul les ef otrr ad irni v" i nv go l t a g e ii nn sd tuasl tl er ida l i nmcoltoosr es p( ar os xl iomni gt y at os et haecyh aorteh ewr )e, l lb- ui nts iusl actoemd pal en tde l y unacceptable for exporting to the utility grid (Figure 1 ). v p E e r n i r c g y e i n s d e i i m e s r c i s l r a er in p p a t r n h o c e d y u i n c b d t e s u t; w s t i e n ry e d nu o s f w t t r e h i n a a l t w m a o t o n t f d o ir e s r r t c a g o t l n a t t n h r c o e e l le s a r u s p b ps a e t n a a d n r t g t ia o r l i d be w tt i r e a id d n t s h c i s o m t n o v o r e s d r u t ( l e I a G r t s i B o . T n B s o ) a , t lh g a on p r d r i o t h id n m u c p s t r , s in u ac s r i i p e nl ge ty o i p n p i s c e u a r l l a a ly t t e e b d a in s g e v a d e te r o y n b s ipi p m o u i l l l s a a e r r s rm e ta a a r n s ts n o e n t r s o s f . r o e H r v o t e w h a e e l v d s e o if r f m , e f e r u e r n o t c f h e e t hri en e x m c a o a m s j t o i , n ra c d t o i i o m sc n p r l o e e f p x i a t t h y n e , c i a e d n s e d v a i r c n e e d l s i a bil ity. POOR GRID-SIDE POWER QUALITY Sp oi nwceer , t hi tei smgoet on er rdarlilvyen iost "huesl idn gt o" vp oe wr yesr t ar i nc dt sntoa tn d" ga er dnse raast i tnog " tdhi set u" ar bc at i vn cee" sp oi tr tmi oanyocf rtehaet eP Wo nMt hdee vui ct i el i t, yt hger i sde. cFtui or nt htehramt o r e , carneda tneost tt hh ee vu toi llittayg ger ipdu. l Ts eh et r iani pn u, ti so fc tohnen ed cr i tveed, tuos ut hael l ymao t o r t dp h o a o s e u s s g i v n h e o t t h 6 e c-p a p u u o l s s w e e e v r r e o q c lt u t a if a g ie l e it r y, d i f i s s r ot c u m o r b n t a n h n e e c c r e t e e s c d t l i i t f k o ie e r t t h i h e s a n ut o t fi r t l i o t c y m l , e a a th n n e d , it sPtWo rMy i ss emc tui oc nh . di ni f fae rgerni dt .- ti ni e dt hci so ncvaesret,e trhfeo rPwWi nMd st uercbtiinoens i,s t h e oc ruet ap tuet dt i ni gs tphoewr eefrodr ei r ehcet ll dy ot on tvoe tr hy es tur ti ci l itt ys tgarni dd .a Tr dhse i np ot we remr s o f vr eoql tuaigr eed atnod bceu rbreel notwh3a-r5m%o noi cf tdhies t of ur tni od an ml eevnet lasl,. ti ny poi cr da el l yr t o mm eu sett bt heefsi tet epdowwi et hr qa ufai l tl iet yr , st yt apni cdaal rl yd sa, ct ha ep aPcWi t i vMe -f irnodnut c- et invde h( LaCr m) foi lnt ei crst. oTchl iesa an dsdme od ofti hl t ebroitsh at hlea rvgoel ,t aegxep ae nn sdi vceu,r r e n t m c in o o e n f t v o fi e c r r ie d te n r r ts caorme pmoon reen te, xapnedn si si v eo naen dr el aessos newff ihcyi e gn rt i dt h- tai en dP W M ives. ISOLATION NECESSARY A PWM system operates by rectifying power onto a di rect ca up rpr ley ni nt g( Dt hCe) vboul st a, gset oor ni n gt h teh eb uesn ed ri rgeyc ti nl y tthoe t hDeCo bu ut ps u, tt ha en nd aa ll tl oewr ni an gt i ncgu rcruernr te nt ot (fAl oCw). pSoi nwceer , t hi teb uetci loi t my egsr i di moppeer raat ti vees toon iustoi l il at yt eg tr hi de, Ds iCn cbeu tsh oe f t twh eo fPoWr mMs doef vpi coew ferro amr et hi en cAoCm po an t ti bh lee . c aln a n j t d e a c s e t t i v n r e o g n p D h e iC c x p c p l u o ro r s r b i e o l n e n t m , o e s n q t i u o ni c p t l h m u e d e i un n t t g il m it t y r a a l g f n u r s i n d fo c c t r i m o o u n el s r d , o c c v a a e u p r s a h e c e iatotirng bank damage, and various other highly undesirable effects. Util ities are rightly fanatical about keepi ng DC current off of tuhsee sA Cp ogwr ei dr., Ae vs ewn i tthh ot hueg hp ri te vhiaosu sa cDaCs eb, uasm, iost onrodt rai v ceotnhcaet r n . d p in r o iv w fa e e c r ot , t n o at o e t y t v h p e e i n c g a a r l c i 6 d c - . i d p T e u h n ls u t e s a , l l r y d e r c fi l v t o if e w ie s r f a r m ore m a k in t e h h s e e r i D t e C in m t l b p y o u p s s r s o o i t b f e l a e c t me fo d o r tor paog wa i en sr ti si nbt eeri nf egr ifnegd wi nittho tthhee ggrriidd iint itsh ims uwcahy .e Ha soiwe refvoerr, DwCh e n pf uol lwy eprrtootefci ntdaigt sa iwn saty tohni stop trhoeb l ep omwies r tloi n ec os .mTphl eet eol nyl yi swo laayt eto the DC bus from the utility lines, typi power isolation transformer. Like anycalallrygbeypuiescinegoaf fullchoarmdpwleaxreit,y,thsiizset,raannsdfoinremfefirciceonmcye. s with additional cost, 4000 -4000 '-'--- -'--�'----'----'----'---'----'---'--_,_--' 0.335 0.34 0.345 0.35 0.355 0.36 0.365 0.37 0.375 0.38 Figııre 2: An "'AC-liıık •· coııverıeı; iııcorporates advaııced algoritlııııs for coıılrolling varioııs aspecıs of ılıe electric poweı: wlıiclı allows ılıe ııse of less complex. /ess expensive lıardıııare ıo ac/ıieve precisioıı poıver coııırol. Tlıe volıage tlıaı is creaıed lıas a disıiııcıly ıııore siıııısoida/ qııality ı/ıaıı PWM ıvaveforıııs, aııd ılıııs reqııires minimal filıering to aclıieve ılıe very low /ıarıııoııic disıorıioıı /evels ııecessaıy ıo exporı it ıo tlıe ııtiliıy grid. HIGT dV/dt bi na cs ko-mt oe- bcaacske, si n, doer ds ei grn teor sg awi ni l l boepttt et or cpount t rt wo l oo vPeWr Mt h ec owni vn ed r t e r s tduoribnign es og,e tnheer adt oe rs itghnaenr sa rpuans si ni vt oe ar epcrt iof ibelre wm otuhl ad t ahl al osw .p liang u e d rt eh ef emr sottoo rt hceo nrtarpoildi ncdhuasntgr ye f oi nr vy oelat ar gs :e hti gh ah t doVc/cdut .r sT hweh et enr ma d V / d t v cd o a e l u v ta i s c g e e e p t u t r h r o n a b t s l e i o sm n a s p i ni p n a l c i el P u d W d d in M ir g e d c r e t a ly v p i i c t d o e . t i n h T s e h u e l m a s t o i t o t e o n e r p t b , e r r r e a m a p k i i n d d a o r ls w is e c n a, in n premature bearing wear, and inefficiencies. A full 25% of vd ta rdi aebs lter osypi nege db emaor itnogr sf. a ii nl u rae sw ihnads t ubrebei nn ea, tht ri gi bhu tdeVd / dt ot ahl isgoh cdaVn/ tchaeu sdea ma ua dgiibn lge vnool ti saeg et os peimk easn aatree frraopmi d tl yh ea pgpelni eedr a. tTohr ei trseeal fr, ea s sseovl uet ri oanl sw, aaynsdt oa lcl oouf nwt ehri ac ch t adrVe / cd ot , smt l yo satnodf iwn ehfi cf ihc i eanr et . pTahret i aml o s t tchoi sm tmi moen ti so ttoh ea pgpel ny ear na t ionrd su ci dt ei v,et oo rci lnedaunc tui vpe -t hcea pvaocli tt iavgeef. i l t e r , 541 ENERJİ & KOJENERASYON DÜNYASI ♦ --+---------.:...._�===========-�, "Kojenerasyon: Yüksek Verim, Temiz Çevre, Enerjide Yeniden Yapılanma"
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