編者語：bianjiangkongzhixitongshizuidachengduliyongbingbaohujiazhibaiwanmeiyuanfenglifadianjideguanjian。yikuanbianjiangkongzhifenglifadianjideshejishiyigegongchengzhihuidejiejing，taxuyaoquebaojiangyedezhuandongjiaoduzhenghaomanzuyaoqiu。danshichulenaxieshejihezhizaofengjixitongderenshiyiwai ，變槳控製技術並不為多數人所知。

   去 YouTube 網站並輸入詞組 “windturbine explodes”，您將會看到一大堆可作為變槳控製係統宣傳廣告的材料。但是除了那些設計和製造風機係統的人士以外 ，變bian槳jiang控kong製zhi技ji術shu並bing不bu為wei多duo數shu人ren所suo知zhi。這zhe真zhen是shi一yi個ge讓rang人ren遺yi憾han的de情qing況kuang。事shi實shi上shang
，變bian槳jiang控kong製zhi係xi統tong是shi最zui大da程cheng度du利li用yong並bing保bao護hu價jia值zhi百bai萬wan美mei元yuan風feng力li發fa電dian機ji的de關guan鍵jian。

　　變bian槳jiang控kong製zhi係xi統tong位wei於yu風feng力li發fa電dian機ji輪lun彀gou內nei。就jiu是shi這zhe些xie不bu顯xian眼yan的de係xi統tong在zai幫bang助zhu風feng力li發fa電dian機ji操cao作zuo人ren員yuan控kong製zhi風feng力li發fa電dian機ji槳jiang葉ye的de傾qing角jiao。根gen據ju歐ou洲zhou風feng能neng協xie會hui的de資zi料liao顯xian示shi，變bian槳jiang控kong製zhi係xi統tong的de成cheng本ben僅jin約yue為wei整zheng個ge風feng力li發fa電dian機ji價jia格ge的de百bai分fen之zhi三san。但dan就jiu像xiang人ren們men購gou買mai保bao險xian一yi樣yang，一yi旦dan發fa生sheng意yi外wai情qing況kuang，一yi點dian點dian額e外wai的de投tou資zi將jiang會hui帶dai來lai顯xian著zhu不bu同tong的de結jie果guo。據ju市shi場chang谘zi詢xun公gong司siIntercedent Asia的分析員估計，截至2007 年nian，已yi有you百bai分fen之zhi九jiu十shi的de新xin風feng力li發fa電dian機ji中zhong配pei備bei了le變bian槳jiang控kong製zhi係xi統tong。雖sui然ran這zhe些xie係xi統tong實shi際ji上shang已yi經jing比bi較jiao普pu及ji
，但dan是shi關guan於yu變bian槳jiang控kong製zhi的de知zhi識shi卻que相xiang對dui不bu為wei人ren所suo知zhi。

   當風場風速為每秒25mihuogenggaoshi，fenglifadianjixuyaoyigeguzhanganquanzhuangzhi，shiqijiangyesuozaidejiaodukejianxiaofuzaibingshifenglifadianjitingzhiyunzhuan。zaizheyiguochengzhong，bianjiangkongzhixitongjiuzhuyaofuzekongzhijiangyedezhuandongjiaodu。bianjiangkongzhixitongyibanfenweiliangzhongleixing，jijidiankongzhixingheyeyakongzhixing。buguo

，bianjiangkongzhixitongbujinjinzaijinjiqingkuangxiatigongguzhanganquangongneng。zhexiexitongfuzejiangjiangyeshezhiyuzuijiajiaoduyihuodezuidafengli，biru，zaifengsuyueweimeimiao12或13米mi時shi控kong製zhi相xiang應ying槳jiang葉ye轉zhuan動dong或huo傾qing斜xie幾ji度du以yi使shi風feng力li發fa電dian機ji達da到dao峰feng值zhi性xing能neng。在zai風feng力li發fa電dian機ji運yun行xing過guo程cheng中zhong可ke靠kao地di調tiao節jie槳jiang葉ye的de角jiao度du是shi變bian槳jiang控kong製zhi係xi統tong的de基ji本ben優you勢shi所suo在zai。

　　荷蘭風能協會的最近一篇文章中指出：“一款變槳控製風力發電機的設計是一個工程智慧的結晶，它需要確保槳葉的轉動角度正好滿足要求。” 而除了Enercon和Vestasyiwai
，daduoshufenglifadianjizhizaoshangdoutongguodisanfanglaizhizaobianjiangkongzhixitong，yincishejishangdeweimiaochabiekenengbubeirensuochajiao。raner，duiyuyigefenglifadianjidegoumaizhelaishuo，youyigeshishifeichangzhongyao，jiduoshuzhizaoshangtongchangzhicaiyongyeyahuozhediandongbianjiangkongzhixitongzhongdeyizhong。henshaoyoufenglifadianjizhizaoshangtongshicaiyongyeyahediandongbianjiangkongzhixitong。erqie，genjuIntercedent Asia公司的研究發現：“最終用戶僅僅將變槳控製係統及其設計的選擇視為其製造商提供的一個選項參數而已”。沒有人會建議購買者主要根據變槳控製係統類型來選擇風力發電機，但是掌握這些係統的差異性將有助於購買者做出總體采購決定。

　　即(ji)使(shi)是(shi)了(le)解(jie)變(bian)槳(jiang)控(kong)製(zhi)係(xi)統(tong)的(de)人(ren)，對(dui)哪(na)種(zhong)係(xi)統(tong)性(xing)能(neng)比(bi)較(jiao)卓(zhuo)越(yue)及(ji)其(qi)中(zhong)的(de)原(yuan)因(yin)方(fang)麵(mian)仍(reng)然(ran)會(hui)有(you)不(bu)同(tong)的(de)看(kan)法(fa)。采(cai)用(yong)電(dian)動(dong)變(bian)槳(jiang)控(kong)製(zhi)係(xi)統(tong)
，不(bu)會(hui)有(you)液(ye)壓(ya)油(you)泄(xie)露(lu)的(de)風(feng)險(xian)
，因(yin)而(er)這(zhe)種(zhong)係(xi)統(tong)不(bu)會(hui)造(zao)成(cheng)高(gao)溫(wen)液(ye)壓(ya)油(you)係(xi)統(tong)所(suo)固(gu)有(you)的(de)任(ren)何(he)環(huan)境(jing)汙(wu)染(ran)問(wen)題(ti)，同(tong)時(shi)其(qi)能(neng)耗(hao)或(huo)能(neng)源(yuan)浪(lang)費(fei)較(jiao)少(shao)。電(dian)動(dong)變(bian)槳(jiang)控(kong)製(zhi)係(xi)統(tong)比(bi)液(ye)壓(ya)變(bian)槳(jiang)控(kong)製(zhi)係(xi)統(tong)更(geng)節(jie)能(neng)，因(yin)為(wei)液(ye)壓(ya)變(bian)槳(jiang)控(kong)製(zhi)係(xi)統(tong)需(xu)要(yao)泵(beng)時(shi)刻(ke)運(yun)轉(zhuan)，以(yi)使(shi)係(xi)統(tong)保(bao)持(chi)高(gao)油(you)溫(wen)並(bing)隨(sui)時(shi)準(zhun)備(bei)讓(rang)槳(jiang)葉(ye)開(kai)始(shi)轉(zhuan)動(dong)。不(bu)過(guo)，電(dian)動(dong)變(bian)槳(jiang)控(kong)製(zhi)係(xi)統(tong)中(zhong)的(de)故(gu)障(zhang)安(an)全(quan)電(dian)池(chi)或(huo)電(dian)容(rong)器(qi)則(ze)是(shi)它(ta)的(de)弱(ruo)點(dian)。一(yi)個(ge)變(bian)槳(jiang)控(kong)製(zhi)係(xi)統(tong)電(dian)池(chi)組(zu)件(jian)的(de)使(shi)用(yong)壽(shou)命(ming)一(yi)般(ban)為(wei)兩(liang)年(nian)或(huo)三(san)年(nian)。一(yi)旦(dan)超(chao)過(guo)有(you)效(xiao)使(shi)用(yong)壽(shou)命(ming)，就(jiu)必(bi)須(xu)更(geng)換(huan)。可(ke)以(yi)想(xiang)象(xiang)爬(pa)上(shang)一(yi)個(ge)2MW風力發電機更換輪彀中的電池是多麼的麻煩。

　　Intercedent As i a公司的PeterBaldwin研究員表示：“液壓係統和電動係統的支持者們均對各自技術的優勢大力宣傳。一方麵 ，電動係統憑借其清潔環保及耐嚴寒能力強而備受青睞，而液壓係統隨著氣溫急劇下降時油液會失去粘度。但在另一方麵 
，液壓係統在速度和可靠性方麵則顯示出明顯的優勢。”

　　Baldwin研究員補充說：“就jiu維wei護hu和he故gu障zhang診zhen斷duan而er言yan
，一yi般ban來lai說shuo液ye壓ya係xi統tong更geng加jia容rong易yi
，因yin為wei所suo使shi用yong的de技ji術shu元yuan件jian更geng少shao。盡jin管guan油you價jia不bu斷duan升sheng高gao，但dan變bian槳jiang控kong製zhi係xi統tong中zhong使shi用yong的de液ye壓ya油you的de成cheng本ben並bing不bu高gao ，因為在封閉的係統中可以基本上實現液壓油的全部再循環使用。”

　　那麼到底哪種變槳控製係統更好呢？目前還沒有明確的答案。而最新的開發成果顯示

，風力發電機製造商可能會著眼第三種選擇方案：jiushihunhexingbianjiangkongzhixitong。tongguohunhejishu
，fenglifadianjijiangyekeyidiandongzhuandong，erbaozhengjiangyebushousunhuaideguzhanganquanzhuangzhizeyouyeyaqudong。hunhejiejuefangandechangdaozheshuo，yeyayouxieluweixianjiangyouyubianjiangkongzhizhuyaoyikaodianliwanchengerdedaojianqing。tamenbiaoshiqinengyuanchengbenyejiangjiangdi。youyuhunhexingbianjiangkongzhixitongyikaoyigeyeyaxitongtigongguzhanganquangongnengsuoxudedongli，changdaozheshuogoumaizhewuxuzaidanxinguzhanganquandianchizujianzaijinianhouhaojindianli。wulungoumaizheyongyounazhongleixingdexitong
，bianjiangkongzhixitongchulenengbangzhuyouxiaozhizaofengnengyiwai，haiduichongfenliyonghebaohufenglifadianjitouzifangmianqizheguanjiandezuoyong。wulunxuanzediandongxing

、液(ye)壓(ya)型(xing)或(huo)者(zhe)混(hun)合(he)型(xing)係(xi)統(tong)中(zhong)的(de)哪(na)一(yi)種(zhong)係(xi)統(tong)，都(dou)需(xu)要(yao)購(gou)買(mai)者(zhe)，即(ji)用(yong)戶(hu)自(zi)己(ji)
，對(dui)這(zhe)個(ge)常(chang)常(chang)被(bei)忽(hu)視(shi)的(de)係(xi)統(tong)進(jin)行(xing)了(le)解(jie)，並(bing)在(zai)購(gou)買(mai)時(shi)利(li)用(yong)所(suo)掌(zhang)握(wo)的(de)知(zhi)識(shi)和(he)技(ji)巧(qiao)做(zuo)出(chu)最(zui)適(shi)當(dang)的(de)決(jue)定(ding)。