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href="http://m.cdcfah.com/cp/second-nengyuan_pdsdsb/">配電輸電設(shè)備</a>?<a href="http://m.cdcfah.com/cp/third-pdsdsb_qtpdsdsb/">其他配電輸電設(shè)備</a>?合肥PFC電腦電源哪家好推薦咨詢深圳市保益新能電氣供應(yīng)</p><div id="g32daro" class="leftbox clearfix"><h1>合肥PFC電腦電源哪家好推薦咨詢深圳市保益新能電氣供應(yīng)</h1><div id="spl84ah" class="proBig"><div id="2x2xj3k" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038577291288/3249165.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="r2jewif" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038577291288/3249165.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3ztk2fc" 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>合肥PFC電腦電源哪家好,PFC電源</p><p><span>***更新：</span>2020-11-24 04:15:02</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="tvwdno2" 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="7zro3zw" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="gvnf988" class="box"><p><p style="text-indent:25px">主動(dòng)式PFC與被動(dòng)式PFC電源的不同：在早些年主動(dòng)式PFC電源剛剛步入主流的時(shí)候，商家們一度大肆宣傳“主動(dòng)式就是比被動(dòng)式好”，現(xiàn)在主動(dòng)式PFC電源已經(jīng)成為主流，雖然不再需要像當(dāng)年那樣瘋狂地推廣，但是我們?nèi)匀豢梢栽诓簧匐娫串a(chǎn)品的包裝上看到強(qiáng)調(diào)主動(dòng)式PFC的字眼，可見這個(gè)觀點(diǎn)早已深入人心。那么主動(dòng)式PFC相比被動(dòng)式PFC好在哪里呢？現(xiàn)在我們就來一起探討一下被動(dòng)式PFC與主動(dòng)式PFC之間差異，合肥PFC電腦電源哪家好，合肥PFC電腦電源哪家好，看看為什么主動(dòng)式PFC電源能夠成為現(xiàn)在的主流，合肥PFC電腦電源哪家好?，F(xiàn)在主動(dòng)式PFC已經(jīng)成為主流和高級(jí)電源的標(biāo)配。主動(dòng)PFC在低功率時(shí)，自身損耗大于被動(dòng)PFC。合肥PFC電腦電源哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="合肥PFC電腦電源哪家好,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038577291288/3249165.png"></div><p style="text-indent:25px">有源PFC的基本原理是在開關(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(附加開關(guān)電源)，對(duì)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(duì)于供電線路來說呈現(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)開關(guān)電源。所以說有源PFC開關(guān)電源就是一個(gè)雙開關(guān)電源的開關(guān)電源電路，它是由斬波器(我們以后稱它為：“PFC開關(guān)電源”)和穩(wěn)壓開關(guān)電源(我們以后稱它為：“PWM開關(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)過整流濾波后，其直流電壓再向常規(guī)的PWM開關(guān)穩(wěn)壓電源供電，其過程是; AC→DC→AC→DC。廣州主動(dòng)式PFC電源有源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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="合肥PFC電腦電源哪家好,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038737730808/982750.png"></div><p style="text-indent:25px">被動(dòng)式PFC：被動(dòng)式PFC一般分“電感補(bǔ)償式”和“填谷電路式（Valley Fill Circuit）”?！半姼醒a(bǔ)償式”是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)，“電感補(bǔ)償式”包括靜音式和非靜音式?！半姼醒a(bǔ)償式”的功率因數(shù)只能達(dá)到0.7～0.8，它一般在高壓濾波電容附近?！疤罟入娐肥健睂儆谝环N新型無源功率因數(shù)校正電路，其特點(diǎn)是利用整流橋后面的填谷電路來大幅度增加整流管的導(dǎo)通角，通過填平谷點(diǎn)，使輸入電流從尖峰脈沖變?yōu)榻咏谡也ǖ牟ㄐ?，將功率因?shù)提高到0.9左右，明顯降低總諧波失真。與傳統(tǒng)的電感式無源功率因數(shù)校正電路相比，其優(yōu)點(diǎn)是電路簡(jiǎn)單，功率因數(shù)補(bǔ)償效果明顯，并且在輸入電路中不需要使用體積大重量沉的大電感器。</p><p style="text-indent:25px">PFC電源與開關(guān)電源的區(qū)別是什么：在PFC開關(guān)電源當(dāng)中，開關(guān)穩(wěn)壓電源是非常重要的一個(gè)組成部分。PFC當(dāng)中的開關(guān)穩(wěn)壓電源功能和普通的開關(guān)穩(wěn)壓電源的區(qū)別并不巨大，只是在供電上有所區(qū)別。普通的開關(guān)穩(wěn)壓電源需要220V整流供電，而PFC穩(wěn)壓開關(guān)電源是由B+PFC供電。整流以后不加濾波電容器，把未經(jīng)濾波的脈動(dòng)正半周電壓作為斬波器的供電源，由于斬波器的一連串的做“開關(guān)”工作脈動(dòng)的正電壓被“斬”成電流波形，其波形的特點(diǎn)是：1、電流波形是斷續(xù)的，其包絡(luò)線和電壓波形相同，并且包絡(luò)線和電壓波形相位同相。2、由于斬波的作用，半波脈動(dòng)的直流電變成高頻（由斬波頻率決定，約100KHz）“交流”電，該高頻“交流”電要再次經(jīng)過整流才能被后級(jí)PWM開關(guān)穩(wěn)壓電源使用。3、從外供電總的看該用電系統(tǒng)做到了交流電壓和交流電流同相并且電壓波形和電流波形均符合正弦波形，既解決了功率因素補(bǔ)償問題，也解決電磁兼容（EMC）和電磁干擾（EMI）問題。主動(dòng)式PFC可以達(dá)到較高的功率因數(shù)──通常可達(dá)98%以上，但成本也相對(duì)較高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="合肥PFC電腦電源哪家好,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(fù)載基本上可以分為兩種模式，其一為電阻型負(fù)載，這種負(fù)載在采用交流輸入時(shí)，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(huì)在同一時(shí)刻逆轉(zhuǎn)極性，能量一直為正向移動(dòng)；另外一種則是電抗型負(fù)載，這種負(fù)載在采用交流輸入時(shí)雖然電壓與電流的波形同樣為正弦曲線，但兩個(gè)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(gè)時(shí)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(dòng)。由于電壓與電流波形之間存在相位差，因此會(huì)有反向能量即無效功率的產(chǎn)生。當(dāng)然這兩種都是理想狀態(tài)下的負(fù)載，在實(shí)際應(yīng)用中其實(shí)是電阻性負(fù)載與電抗型負(fù)載的混合，極少存在單一型負(fù)載的情況，因此在任意時(shí)刻的負(fù)載中會(huì)有兩種不同方向的能量，其中只有正向能量是有價(jià)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。主動(dòng)式PFC一般由功率MOFET開關(guān)管、PFC二極管、電感、等六個(gè)電子元器件組成。廣州主動(dòng)式PFC電源</p><p style="text-indent:25px">目前的PFC有兩種，一種為被動(dòng)式PFC（也稱無源PFC）和主動(dòng)式PFC（也稱有源式PFC）。合肥PFC電腦電源哪家好</p><p style="text-indent:25px">主動(dòng)式PFC電源會(huì)更省電嗎？在主動(dòng)式PFC電源剛剛步入主流的時(shí)候，不少廠商為了宣傳自家的主動(dòng)式PFC電源產(chǎn)品，都紛紛打出了“主動(dòng)式PFC電源更加省電”的旗幟，引導(dǎo)消費(fèi)者選擇采用主動(dòng)式PFC設(shè)計(jì)的產(chǎn)品。但事實(shí)上是不是這樣呢？主動(dòng)式PFC電源就一定比被動(dòng)式PFC電源省電嗎？如果從宏觀的角度來看，確實(shí)是這樣沒錯(cuò)的。同樣是200W的有效功率，采用被動(dòng)式PFC設(shè)計(jì)、PF值為0.8的PC電源需要消耗250W的視在功率，而采用主動(dòng)式PFC設(shè)計(jì)、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(dòng)式PFC電源對(duì)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(duì)于消費(fèi)者而言并沒有什么實(shí)際意義，因?yàn)槲覀兊碾姳碇唤y(tǒng)計(jì)有效功率，并不是統(tǒng)計(jì)視在功率，換句話說你只需要為有效功率付電費(fèi)，因此不管是主動(dòng)式PFC、被動(dòng)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(fèi)者需要支付的電費(fèi)也是相同的。真正能讓你省電費(fèi)的參數(shù)是電源的轉(zhuǎn)換效率，這個(gè)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(fèi)自然也越少了。合肥PFC電腦電源哪家好</p><p style="text-indent:25px">深圳市保益新能電氣有限公司主要經(jīng)營(yíng)范圍是電工電氣，擁有一支專業(yè)技術(shù)團(tuán)隊(duì)和良好的市場(chǎng)口碑。保益新能致力于為客戶提供良好的UPS/EPS電源，雙向逆變器，安防電源，激光儲(chǔ)能電源，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠(chéng)信為本的理念，打造電工電氣良好品牌。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2119036.html</p></div></div></div></div></div><div id="7phoyah" class="page-right twoColRt"><div id="gqnpopm" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qvnfhjq" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="scur289" class="recomPic likePro"><a 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