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clearfix"><h1>武漢被動式電源pfc批發(fā)廠家真誠推薦深圳市保益新能電氣供應(yīng)</h1><div id="k7biear" class="proBig"><div id="noudo8s" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041293638980/8296733.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2n9zvrx" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041293638980/8296733.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="thsjvrs" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>武漢被動式電源pfc批發(fā)廠家,PFC電源</p><p><span>***更新：</span>2021-02-04 14:15:54</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="wpgs38o" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市保益新能電氣有限公司</a></p><p><span>聯(lián)系人：</span>葉立民</p><p><span>郵箱: </span>1301978383@qq.com</p><p><span>電話: </span>18675588113</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span>http://www.boynelectric.com</p><p><span>手機(jī): </span>0755-21070344</p><p><span>地址: </span>大浪街道浪口社區(qū)華榮路496號德泰工業(yè)區(qū)1號廠房4層402</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="dqms38h" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="b7tpl8u" class="box"><p><p style="text-indent:25px">被動式PFC的缺點：1、當(dāng)歐洲EN的諧波規(guī)范越來越嚴(yán)格時，電感量產(chǎn)的質(zhì)量需提升，而生產(chǎn)難度將提高。2、沉重重量增加電源供應(yīng)器在運輸過程損壞的風(fēng)險。3、原料短缺的風(fēng)險較高。4，武漢被動式電源pfc批發(fā)廠家，武漢被動式電源pfc批發(fā)廠家、如電源內(nèi)部結(jié)構(gòu)固定的不正確，容易產(chǎn)生震動噪音。5、當(dāng)電源供應(yīng)器輸出超過300瓦以上，被動式PFC在材料成本及產(chǎn)品性能表現(xiàn)上將越不具競爭力。PFC作為決定電源轉(zhuǎn)換效率的重要因素，其主要分為主動PFC與被動PFC。前者帶來的是更高的功率因數(shù)但成本也會有很大的增加，后者雖然價格低廉但功率因數(shù)也會有所下降。主動PFC電路本身損耗的電能比起被動PFC電路更高，從而直接降低了電源的轉(zhuǎn)換效率，武漢被動式電源pfc批發(fā)廠家，因為有更多的電能并沒有被實際負(fù)載利用上。PFC電路所調(diào)節(jié)的功率因數(shù)，是給電廠節(jié)省了電能，而并沒有真正給用戶節(jié)省?！肮β室驍?shù)校正”，通俗的話說，就是提高有用功的比重。武漢被動式電源pfc批發(fā)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="武漢被動式電源pfc批發(fā)廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041293638980/8296733.png"></div><p style="text-indent:25px">目前電腦用的電源PFC有兩種，一是被動式PFC，也稱無源PFC；一是主動式PFC，也稱有源式PFC。1、主動式PFC主要由高頻電感、開關(guān)管、電容以及控制IC等元件構(gòu)成，可簡單的歸納為升壓型開關(guān)電源電路，這種電路的特點是構(gòu)造復(fù)雜，但優(yōu)點很多：功率因數(shù)高達(dá)0.99、低損耗和高可靠、輸入電壓可以從90V到270V(寬幅輸入)等，由于輸出DC電壓紋波很小，因此采用主動式PFC的電源不需要采用很大容量的濾波電容。2、被動式PFC通常為一塊體積較大的電感，其內(nèi)部由多塊硅鋼片外部纏繞銅線而組成，它的原理是采用電感補償方法通過使交流輸入的基波電流與電壓之間相位差減小來提高功率因數(shù)，被動式PFC的功率因數(shù)不是很高，只能達(dá)到0.7~0.8，因此其效率也比較低，發(fā)熱量也比較大。被動式PFC也并非一無是處，其結(jié)構(gòu)簡單，穩(wěn)定性上表現(xiàn)好，比較適合中低端電源。3、主動式PFC設(shè)計復(fù)雜，成本較高；主動式PFC比被動式PFC性能要好，更加節(jié)能；主動式PFC的功率因數(shù)更高；被動式PFC電源成本低。正因如此，主動式PFC已成為當(dāng)前電腦主流電源。如果你只是想用低端的電腦穩(wěn)定使用的話，那買個被動式PFC的電源使用沒問題。蘇州PFC電源批發(fā)廠家主動式PFC通過升高輸入電壓來減少電流在流向下級電路中的電能損耗。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="武漢被動式電源pfc批發(fā)廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png"></div><p style="text-indent:25px">主動式PFC電源會更省電嗎？在主動式PFC電源剛剛步入主流的時候，不少廠商為了宣傳自家的主動式PFC電源產(chǎn)品，都紛紛打出了“主動式PFC電源更加省電”的旗幟，引導(dǎo)消費者選擇采用主動式PFC設(shè)計的產(chǎn)品。但事實上是不是這樣呢？主動式PFC電源就一定比被動式PFC電源省電嗎？如果從宏觀的角度來看，確實是這樣沒錯的。同樣是200W的有效功率，采用被動式PFC設(shè)計、PF值為0.8的PC電源需要消耗250W的視在功率，而采用主動式PFC設(shè)計、PF值為0.9的PC電源則只需要222W的視在功率，如果說視在功率相當(dāng)于發(fā)電機(jī)的輸出功率，那主動式PFC電源對發(fā)電機(jī)造成的負(fù)荷就更低，自然也就是更省電了。然而這樣的省電對于消費者而言并沒有什么實際意義，因為我們的電表只統(tǒng)計有效功率，并不是統(tǒng)計視在功率，換句話說你只需要為有效功率付電費，因此不管是主動式PFC、被動式PFC還是沒有PFC，只要有效功率相同，電表上走的數(shù)字就是相同的，消費者需要支付的電費也是相同的。真正能讓你省電費的參數(shù)是電源的轉(zhuǎn)換效率，這個轉(zhuǎn)換效率直接影響電源有效功率的高低，在相同的輸出負(fù)載下，轉(zhuǎn)換效率更高的電源所需要的有效功率越低，你需要付的電費自然也越少了。</p><p style="text-indent:25px">pfc對電源的重要性：這里我們需要指出的是，居民用戶只需要支付實際功率（瓦數(shù)）所消耗的電量，則不會支付回流到電網(wǎng)中無用功率的電量。而對于商業(yè)工廠用電則會追加無用功率這一部分的用電，因為他們所消耗電量的基數(shù)太大了。雖然對于居民用戶來說，我們不需要支付無用功率的電費，但是根據(jù)《歐盟EN61000-3-2號標(biāo)準(zhǔn)》（當(dāng)然中國也有相關(guān)的法規(guī)條款），凡是功率擦超過75W的開關(guān)電源，都需要至少安裝被動PFC模塊。此外，在80Plus電源認(rèn)證中，則要求功率因數(shù)需要超過0.9，甚至更多。不過在數(shù)年前，許多的電源廠商大多都在電源產(chǎn)品中使用被動PFC模塊。而PFC模塊則是一個減少諧波電流，并且將非線性負(fù)載轉(zhuǎn)換成線性負(fù)載的過濾器，電容和電感所產(chǎn)生的功率因數(shù)則會向單位值跟近一些。主動式PFC電路的升壓能力，能容許較低的輸入電壓。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="武漢被動式電源pfc批發(fā)廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038635709246/2295771.png"></div><p style="text-indent:25px">PFC就是功率因數(shù)校正，什么是PFC，意思是“功率因數(shù)校正”，通俗的話說，就是提高有用功的比重。而計算機(jī)開關(guān)電源是一種電容輸入型電路，其電流和電壓之間的相位差會造成交換功率的損失，此時便需要PFC電路提高功率因數(shù)。目前的PFC有兩種，分為被動式PFC和主動式PFC。被動PFC特點：首先看下被動PFC和主動PFC在設(shè)計上有什么區(qū)別，被動式PFC一般是一個體積較大的電感，內(nèi)部是銅線纏繞硅鋼片以絕緣膠紙包覆，外形和小變壓器非常相似。被動式PFC采用電感補償方法使交流輸入的基波電流與電壓之間相位差減小來提高功率因數(shù)，被動式PFC的功率因數(shù)只能達(dá)到0.6～0.75，一般放置在高壓濾波電容附近。被動PFC方案簡單的結(jié)構(gòu)也形成了其zui大的特點——低成本。主動PFC特點：相對于被動PFC簡單直觀的外形，主動式PFC電路要復(fù)雜許多。主動式PFC電路是由電感線圈、濾波電容、開關(guān)管及控制IC等元件組成的一個升壓電路，可以將輸入電壓提高、減少電流的電能損耗。主動式PFC可以達(dá)到較高的功率因數(shù)──通?？蛇_(dá)98%以上，但由于電路較復(fù)雜、元件較多，所以成本也相對較高。與被動式PFC相比，主動式PFC電路省去了一個較大體積的含有硅鋼片的電感。蘇州PFC電源批發(fā)廠家</p><p style="text-indent:25px">被動式PFC由多塊硅鋼片外部纏繞銅線而成。武漢被動式電源pfc批發(fā)廠家</p><p style="text-indent:25px">pfc對電源的重要性：功率因數(shù)（PF）是指，實際功率（有效功率）與視在功率（表觀功率）的比率（kW/kVA），而我們都知道，功率P等于電壓與電流的乘積（P=V×I）。另外，在電路中會存在著zui基本的兩種電路負(fù)載，一種為“電阻（由電源中各種電阻構(gòu)成的電路負(fù)載）”，另外一種為“電抗（由電源中電感線圈和電容構(gòu)成的電路負(fù)載）”。如果整個電路都是線性負(fù)載（電路阻抗為恒定常數(shù)的負(fù)載），那么電源電壓和電流都將會呈現(xiàn)為正弦曲線，并且相位相同。而如果在這個純電阻電路中，那么電壓和電流都會在同一時刻逆轉(zhuǎn)極性，那么也就是說，在每一時刻，電壓與電流的乘積都為“正”。也就是說，在電路中，沒有“反方向（負(fù)極方向）”的能量移動，而此時所產(chǎn)生負(fù)載功率才被稱為“實際功率”。武漢被動式電源pfc批發(fā)廠家</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3161001.html</p></div></div></div></div></div><div id="dmizvmi" class="page-right twoColRt"><div id="c7tuv38" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="orde89z" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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