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src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041284644784/1270972.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="sgdvnur" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041284644784/1270972.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="vu3hqhz" 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>武漢被動式PFC電源哪家好,PFC電源</p><p><span>***更新：</span>2020-11-21 10:21:20</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="3kpwt7z" 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="eisjgfc" class="page-proshow02"><p class="title">詳細說明</p><div id="m2ekmtv" class="box"><p><p style="text-indent:25px">被動式PFC，不論靜音與否，他們都可以被稱作無源PFC。無源PFC一般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)，但無源PFC的功率因數(shù)不是很高，只能達到0.7~0.8。靜音型被動PFC相比非靜音型被動PFC，無論是成本上還是制造工藝上要求都比較高，武漢被動式PFC電源哪家好。這里還要說明的是，PFC會產(chǎn)生噪聲的原因。從原理上講，我們在上面看到的部分結(jié)構(gòu)上和電感類似，在對電流和電壓補償?shù)倪^程中，始終進行著充放電的過程，因而產(chǎn)生了磁性，武漢被動式PFC電源哪家好，zui終會和周邊的金屬元件產(chǎn)生震動進而發(fā)出噪音。靜音型PFC相當于兩個非靜音型PFC的疊加，達到震動互相抵消的目的，武漢被動式PFC電源哪家好。但是，在消除噪音的手段中，安裝是否得當也是對靜音效果影響較大的因素?！】傮w上來說，非靜音型被動PFC與靜音型被動PFC所能達到的效果大致相當，但都要低于主動式PFC的功因校正效果。被動式PFC通常為一塊體積較大的電感。武漢被動式PFC電源哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="武漢被動式PFC電源哪家好,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041284644784/1270972.png"></div><p style="text-indent:25px">PFC電路原理?PFC就是“功率因數(shù)”的意思，主要用來表征電子產(chǎn)品對電能的利用效率。功率因數(shù)越高，說明電能的利用效率越高。?PFC有兩種，一種是無源PFC（也稱被動式PFC），一種是有源PFC（也稱主動式PFC）。無源PFC一般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)，但無源PFC的功率因數(shù)不是很高，只能達到0.7~0.8；有源PFC由電感電容及電子元器件組成，體積小，可以達到很高的功率因數(shù)，但成本要高出無源PFC一些。?有源PFC電路中往往采用高集成度的IC，采用有源PFC電路的PC電源，至少具有以下特點：?（1）?輸入電壓可以從90V到270V；（?2）?高于0.99的線路功率因數(shù)，并具有低損耗和高可靠等優(yōu)點；?（3）?IC的PFC還可用作輔助電源，因此在使用有源PFC電路中，往往不需要待機變壓器；?（4）?輸出不隨輸入電壓波動變化，因此可獲得高度穩(wěn)定的輸出電壓；?5）?有源PFC輸出DC電壓紋波很小，且呈100Hz/120Hz（工頻2倍）的正弦波，因此采用有源PFC的電源不需要采用很大容量的濾波電容。南京PFC電源銷售廠家基本上功率因數(shù)可以衡量電力被有效利用的程度。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="武漢被動式PFC電源哪家好,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041293638980/8296733.png"></div><p style="text-indent:25px">電源里主動PFC和被動PFC有什么區(qū)別：同樣額定功率的電源產(chǎn)品，主動式PFC電源大部分有著比被動式PFC產(chǎn)品更高的轉(zhuǎn)換效率，因為前者往往在做工、用料和架構(gòu)上都會有更高的水平，品質(zhì)也會更好，所以主動式PFC電源產(chǎn)品在客觀上更省電費。主動式PFC電源對交流輸入電壓的適應性也更強，基本上目前的寬幅電源都采用了主動式PFC設計，這樣在電壓波動比較大環(huán)境下，主動式PFC電源仍然可以保持穩(wěn)定的輸出。而被動式PFC電源對輸入電壓的穩(wěn)定性有一定的要求，電壓浮動的適應范圍往往不如主動式PFC產(chǎn)品，在輸入電壓起伏較大的環(huán)境下可能無法正常工作。</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。PFC的全稱是Power Factor Corrector。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="武漢被動式PFC電源哪家好,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038685836223/2985647.png"></div><p style="text-indent:25px">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。主動式PFC可以達到較高的功率因數(shù)──通?？蛇_98%以上，但成本也相對較高。上海主動PFC電源</p><p style="text-indent:25px">“功率因數(shù)校正”，通俗的話說，就是提高有用功的比重。武漢被動式PFC電源哪家好</p><p style="text-indent:25px">開關電源中的pfc是什么意思？PFC就是功率因數(shù)校正，由于開關電源不是純電阻負載，屬于容性負載，大量的開關電源同時使用會干擾電網(wǎng)，使電網(wǎng)不平衡。一般開關電源的功率因數(shù)PF為0.6左右。理想的純電阻負載功率因數(shù)PF為1，開關電源經(jīng)功率因數(shù)PF校正后可以達到0.8以上！開關電源功率因素低，會影響電網(wǎng)的使用效率，比如：10KW的電力變壓器，如果使用功率因數(shù)PF為0.6，功率1KW的開關電源，只能同時帶動6臺這樣的開關電源，如果使用功率因數(shù)PF為0.9，功率1KW的開關電源，可以同時帶動9臺這樣的開關電源！大量使用功率因素低的開關電源，會將許多功率消耗在電線上，使電線發(fā)熱。還會使電網(wǎng)的正弦波失真變形，影響其它電器的正常使用。一般大功率開關電源，都要求功率因數(shù)PF在0.8以上！對于手機充電器這樣的小功率開關電源，沒有要求。對于LED電源，有些對功率因數(shù)也有要求。武漢被動式PFC電源哪家好</p><p style="text-indent:25px">深圳市保益新能電氣有限公司是一家電氣設備、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，是一家集研發(fā)、設計、生產(chǎn)和銷售為一體的專業(yè)化公司。保益新能擁有一支經(jīng)驗豐富、技術創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供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市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2084521.html</p></div></div></div></div></div><div id="fvnpwyp" class="page-right twoColRt"><div id="2o3ubda" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8lplnzg" 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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