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src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jxoaw8p" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="hvhtaju" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>深圳主動(dòng)PFC電源批發(fā)價(jià)格,PFC電源</p><p><span>***更新：</span>2021-01-09 07:10:59</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="74g8ypg" 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(hào)德泰工業(yè)區(qū)1號(hào)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="ocykbso" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="wk8tkbs" class="box"><p><p style="text-indent:25px">什么是主動(dòng)式PFC？主動(dòng)式PFC在結(jié)構(gòu)上來(lái)說(shuō)基本就是一個(gè)通過(guò)PWM控制電流波形的AC/DC整流器，交流輸入通過(guò)整流橋進(jìn)行整流，然后PWM觸發(fā)主動(dòng)PFC電路中的MosFET管，分離中間直流電壓到恒定脈沖序列，隨后這些脈沖信號(hào)通過(guò)濾波電容，將相對(duì)平順的電流送到主開(kāi)關(guān)電路。此外我們可以在主動(dòng)式PFC電路中看到一個(gè)體積相對(duì)較大的電感線圈，這個(gè)電感線圈可以對(duì)電流起到緩沖和梳理的作用，當(dāng)然它在體積和重量上比起被動(dòng)式PFC的電感要小很多。從設(shè)計(jì)結(jié)構(gòu)上來(lái)說(shuō)，主動(dòng)式PFC顯然比被動(dòng)式PFC更復(fù)雜，成本也更高。但是主動(dòng)式PFC有著更寬廣的電壓適應(yīng)能力，在電壓波動(dòng)較大的情況下仍然可以穩(wěn)定工作，不少產(chǎn)品甚至直接支持110V到220V電壓的輸入。同時(shí)在功率因數(shù)校正的效果上，主動(dòng)式PFC也有凌駕于被動(dòng)式PFC，可以輕松達(dá)到0，深圳主動(dòng)PFC電源批發(fā)價(jià)格.9以上，部分高級(jí)產(chǎn)品甚至可以實(shí)現(xiàn)無(wú)限接近于1的效果，深圳主動(dòng)PFC電源批發(fā)價(jià)格。此外由于主動(dòng)式PFC電路的體積和重量都遠(yuǎn)小于被動(dòng)式PFC，深圳主動(dòng)PFC電源批發(fā)價(jià)格，隨著電源額定功率的提升，其在體積和重量上的變化也不會(huì)很大，因此在被動(dòng)式PFC電源上“越重越好”的標(biāo)準(zhǔn)其實(shí)并不適合主動(dòng)式PFC電源。PFC可以在交流轉(zhuǎn)換為直流時(shí)提高電源對(duì)市電的利用率。深圳主動(dòng)PFC電源批發(fā)價(jià)格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳主動(dòng)PFC電源批發(fā)價(jià)格,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406041362838188/2093902.png"></div><p style="text-indent:25px">主動(dòng)式PFC，也稱有源PFC。主動(dòng)式PFC使用主動(dòng)組件 [控制線路及功率型開(kāi)關(guān)式組件(power sine conductor On/Off switch)，基本運(yùn)作原理為調(diào)整輸入電流波型使其與輸入電壓波形盡可能相似，功率因素校正值可達(dá)近乎99%。此外主動(dòng)式PFC有另一項(xiàng)重要附加價(jià)值，即電源供應(yīng)器輸入電壓范圍可擴(kuò)增為90Vdc到264Vdc的全域電壓，電源供應(yīng)器不需要像以往一般需切換電壓。相對(duì)地，因?yàn)槠鋬?yōu)異功能，主動(dòng)式PFC價(jià)格也較高。另外消費(fèi)者還要注意，一般而言很多被動(dòng)式的設(shè)計(jì)，在115V的系統(tǒng)上是沒(méi)有置入的，因?yàn)閺S商只作230V的部分，所以需請(qǐng)?jiān)?15V電壓系統(tǒng)下的消費(fèi)者，留意此問(wèn)題，可能多花了錢卻買到在115V下沒(méi)有PFC作用的電源供應(yīng)器。深圳主動(dòng)PFC電源批發(fā)價(jià)格PFC分為主動(dòng)式（有源）和被動(dòng)式（無(wú)源）兩種。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳主動(dòng)PFC電源批發(fā)價(jià)格,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038737730808/982750.png"></div><p style="text-indent:25px">開(kāi)關(guān)電源中的pfc是什么意思？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(guān)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(dāng)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(lái)衡量用電設(shè)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(shè)備功率因數(shù)的技術(shù)就稱為功率因數(shù)校正。主動(dòng)式PFC則由電感電容及電子元器件組成，體積小、通過(guò)**IC去調(diào)整電流的波形，對(duì)電流電壓間的相位差進(jìn)行補(bǔ)償。主動(dòng)式PFC可以達(dá)到較高的功率因數(shù)──通?？蛇_(dá)98%以上，但成本也相對(duì)較高。此外，主動(dòng)式PFC還可用作輔助電源，因此在使用主動(dòng)式PFC電路中，往往不需要待機(jī)變壓器，而且主動(dòng)式PFC輸出直流電壓的紋波很小，這種電源不必采用很大容量的濾波電容。</p><p style="text-indent:25px">有源PFC的基本原理是在開(kāi)關(guān)電源的整流電路和濾波電容之間增加一個(gè)DC-DC的斬波電路(附加開(kāi)關(guān)電源)，對(duì)于供電線路來(lái)說(shuō)該整流電路輸出沒(méi)有直接接濾波電容，所以其對(duì)于供電線路來(lái)說(shuō)呈現(xiàn)的是純阻性的負(fù)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(gè)開(kāi)關(guān)電源。所以說(shuō)有源PFC開(kāi)關(guān)電源就是一個(gè)雙開(kāi)關(guān)電源的開(kāi)關(guān)電源電路，它是由斬波器(我們以后稱它為：“PFC開(kāi)關(guān)電源”)和穩(wěn)壓開(kāi)關(guān)電源(我們以后稱它為：“PWM開(kāi)關(guān)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(wèn)題，但是電路非常的復(fù)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(gè)“斬波”電路把脈動(dòng)的直流變成高頻(約100K)交流再經(jīng)過(guò)整流濾波后，其直流電壓再向常規(guī)的PWM開(kāi)關(guān)穩(wěn)壓電源供電，其過(guò)程是; AC→DC→AC→DC。PFC還能減少電源對(duì)市電電網(wǎng)的干擾，尤其是避免它在突然啟動(dòng)時(shí)對(duì)其他電器的影響。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳主動(dòng)PFC電源批發(fā)價(jià)格,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038635709246/2295771.png"></div><p style="text-indent:25px">無(wú)PFC電源的缺點(diǎn)1.主動(dòng)PFC在低功率時(shí)，自身?yè)p耗大于被動(dòng)PFC。畢竟它是一個(gè)復(fù)雜的電路，工作起來(lái)要消耗電能;而被動(dòng)PFC就是一個(gè)電感。不過(guò)很少有人讓高級(jí)電源工作的低負(fù)載下，這個(gè)問(wèn)題也就不明顯了。2.主動(dòng)PFC還有一個(gè)zui麻煩的缺點(diǎn)：電磁干擾大。為了搞定電磁干擾，EMI濾波電路要加強(qiáng)，電路更加復(fù)雜。有些電源在待機(jī)時(shí)發(fā)出高頻噪音，也是因?yàn)橹鲃?dòng)PFC。3.無(wú)源PFC電路是以**電源的效率和穩(wěn)定性為代價(jià)的。很多不太懂電源人，盲目的把電源加上無(wú)源PFC電路，以為這樣就能很容易的解決電路的PF值問(wèn)題了，事實(shí)上，這樣在很多時(shí)候是得不償失。4.增加一點(diǎn)PF值，**了電源本身的更多優(yōu)良性能，無(wú)源PFC大約有兩種方式。主動(dòng)式PFC一般由功率MOFET開(kāi)關(guān)管、PFC二極管、電感、等六個(gè)電子元器件組成。青島被動(dòng)式電源pfc銷售廠家</p><p style="text-indent:25px">相對(duì)于被動(dòng)PFC簡(jiǎn)單直觀的外形，主動(dòng)式PFC電路要復(fù)雜許多。深圳主動(dòng)PFC電源批發(fā)價(jià)格</p><p style="text-indent:25px">我們?yōu)槭裁匆x擇主動(dòng)式PFC電源？如果**是從省電費(fèi)的角度來(lái)考慮，電源是采用主動(dòng)式PFC、被動(dòng)式PFC甚至是有無(wú)PFC都沒(méi)有什么關(guān)系，因?yàn)槭″X與否的關(guān)鍵是在電源的轉(zhuǎn)換效率。但是實(shí)際與理論總是有一些差別的，從客觀事實(shí)來(lái)說(shuō)，同樣額定功率的電源產(chǎn)品，主動(dòng)式PFC電源大部分確實(shí)有著比被動(dòng)式PFC產(chǎn)品更高的轉(zhuǎn)換效率，因?yàn)榍罢咄谧龉ぁ⒂昧虾图軜?gòu)上都會(huì)有更高的水平，品質(zhì)也會(huì)更好，所以主動(dòng)式PFC電源產(chǎn)品在客觀上確實(shí)要更省電費(fèi)，雖然兩者沒(méi)有必然的聯(lián)系。深圳主動(dòng)PFC電源批發(fā)價(jià)格</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2769856.html</p></div></div></div></div></div><div id="dmdzvm8" class="page-right twoColRt"><div id="34mf2du" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qpbizve" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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