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src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038685836223/2985647.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="zyiat7t" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038685836223/2985647.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3mz8uu2" 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)品關鍵詞：</span>濟南主動PFC電源廠家,PFC電源</p><p><span>***更新：</span>2020-12-04 06:17:13</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="wvydcea" 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: </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="s32mvkl" class="page-proshow02"><p class="title">詳細說明</p><div id="889csyz" class="box"><p><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、開關管、電容以及控制IC等元件構成，可簡單的歸納為升壓型開關電源電路，這種電路的特點是構造復雜，但優(yōu)點很多：功率因數(shù)高達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，其結構簡單，穩(wěn)定性上表現(xiàn)好，比較適合中低端電源。3、主動式PFC設計復雜，成本較高；主動式PFC比被動式PFC性能要好，濟南主動PFC電源廠家，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已成為當前電腦主流電源，濟南主動PFC電源廠家。如果你只是想用低端的電腦穩(wěn)定使用的話，濟南主動PFC電源廠家，那買個被動式PFC的電源使用沒問題。主動式PFC就是一個有源的升壓電路。濟南主動PFC電源廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="濟南主動PFC電源廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038685836223/2985647.png"></div><p style="text-indent:25px">PFC的英文全稱為“Power Factor Correction”，意思是“功率因數(shù)校正”，功率因數(shù)指的是有效功率與總耗電量（視在功率）之間的關系，也就是有效功率除以總耗電量（視在功率）的比值。基本上功率因數(shù)可以衡量電力被有效利用的程度，當功率因數(shù)值越大，表示其電力利用率越高。功率因數(shù)是用來衡量用電設備用電效率的參數(shù)，低功率因數(shù)表示低電力效能。為了提高用電設備功率因數(shù)的技術就稱為功率因數(shù)校正。簡介：計算機開關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，一種為被動式PFC（也稱無源PFC）和主動式PFC（也稱有源式PFC）。濟南主動PFC電源廠家主動式PFC一般由功率MOFET開關管、PFC二極管、電感、等六個電子元器件組成。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="濟南主動PFC電源廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038609127250/5992744.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，引導消費者選擇采用主動式PFC設計的產(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于發(fā)電機的輸出功率，那主動式PFC電源對發(fā)電機造成的負荷就更低，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)是電源的轉換效率，這個轉換效率直接影響電源有效功率的高低，在相同的輸出負載下，轉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">常見的PFC電路分為兩種，一種是主動式PFC電路，另一種是被動式PFC電路。主動式PFC電路是一種特殊的Boost斬波電路，220V市電經(jīng)過二極管整流后不使用電容來濾波，而是直接送入主動式PFC電路中進行升壓，借助PFC電路來完成了濾波這個環(huán)節(jié)直接輸出高壓直流電（一般在350V以上）給開關電源電路使用。主動式PFC的優(yōu)點很多，比如它改善功率因數(shù)的效果很明顯，可以將電腦電源的功率因數(shù)提高到0.98以上；其次主動式PFC還能夠改擴寬輸入電壓范圍，從而制成寬電壓輸入的電源。主動式PFC的缺點是電路較為復雜，成本較高。被動式PFC電路實際上只有一個大的鐵芯電感組成，這個電感串聯(lián)在整流電路與濾波電容之間，電路很簡潔，利用電感電流不能突變的原理來改善輸入交流電流的波形從而提高功率因數(shù)。它的優(yōu)點是成本低，電路簡單，可靠性高，電磁干擾??；缺點是提升功率因數(shù)的效果有限，一般只能達到0.8左右。主動PFC為了搞定電磁干擾，EMI濾波電路要加強，電路更加復雜。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="濟南主動PFC電源廠家,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038655679952/7203321.png"></div><p style="text-indent:25px">PC電源為什么需要配置PFC電路？目前電路負載基本上可以分為兩種模式，其一為電阻型負載，這種負載在采用交流輸入時，其電壓與電流的波形都將呈現(xiàn)正弦曲線且相位相同，換句話說電壓和電流都會在同一時刻逆轉極性，能量一直為正向移動；另外一種則是電抗型負載，這種負載在采用交流輸入時雖然電壓與電流的波形同樣為正弦曲線，但兩個波形之間存在相位差，這樣就無法保證電壓與電流在每一個時刻都是相同的極性，在極性相反的周期內(nèi)，能量是反向移動。由于電壓與電流波形之間存在相位差，因此會有反向能量即無效功率的產(chǎn)生。當然這兩種都是理想狀態(tài)下的負載，在實際應用中其實是電阻性負載與電抗型負載的混合，極少存在單一型負載的情況，因此在任意時刻的負載中會有兩種不同方向的能量，其中只有正向能量是有價值的，我們將其稱為有效功率，反向能量則稱為無效功率，而兩者的綜合就是視在功率了。重量上主動式PFC比被動式PFC電路輕。成都被動式電源pfc廠家聯(lián)系方式</p><p style="text-indent:25px">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。濟南主動PFC電源廠家</p><p style="text-indent:25px">有源PFC的基本原理是在開關電源的整流電路和濾波電容之間增加一個DC-DC的斬波電路(附加開關電源)，對于供電線路來說該整流電路輸出沒有直接接濾波電容，所以其對于供電線路來說呈現(xiàn)的是純阻性的負載，其電壓和電流波形同相、相位相同。斬波電路的工作也類似于一個開關電源。所以說有源PFC開關電源就是一個雙開關電源的開關電源電路，它是由斬波器(我們以后稱它為：“PFC開關電源”)和穩(wěn)壓開關電源(我們以后稱它為：“PWM開關電源”)組成的。有源PFC電路的原理：有源PFC則是有很好的效果，基本上可以完全的消除電流波形的畸變，而且電壓和電流的相位可以控制保持一致，它可以基本上完全解決了功率因數(shù)、電磁兼容、電磁干擾的問題，但是電路非常的復雜，其基本思路是在220V整流橋堆后去掉濾波電容(以消除因電容的充電造成的電流波形畸變及相位的變化)，去掉濾波電容后由一個“斬波”電路把脈動的直流變成高頻(約100K)交流再經(jīng)過整流濾波后，其直流電壓再向常規(guī)的PWM開關穩(wěn)壓電源供電，其過程是; AC→DC→AC→DC。濟南主動PFC電源廠家</p><p style="text-indent:25px">深圳市保益新能電氣有限公司總部位于大浪街道浪口社區(qū)華榮路496號德泰工業(yè)區(qū)1號廠房4層402，是一家電氣設備、電源產(chǎn)品、逆變器，UPS，通訊電源，儲能電源產(chǎn)品、工業(yè)電源、電池充放電電源設備、電池充放電管理系統(tǒng)設備、數(shù)字電源、無功補償器或者功率矯正器、數(shù)字控制技術軟件、工業(yè)控制軟件、電力計量產(chǎn)品、新能源設備、太陽能、并網(wǎng)逆變器、離網(wǎng)逆變器、匯流箱、控制器，通訊設備產(chǎn)品、節(jié)能電子產(chǎn)品、回饋式電源負載的研發(fā)、銷售及相關信息咨詢。的公司。保益新能深耕行業(yè)多年，始終以客戶的需求為向導，為客戶提供***的UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源。保益新能致力于把技術上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。保益新能始終關注電工電氣行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2260368.html</p></div></div></div></div></div><div id="fdo24dx" class="page-right twoColRt"><div id="7y8wk2c" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kfhipax" class="recomPic likePro"><a href="http://m.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" class="vcenter" 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