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container clearfix"><div id="qrqnqwy" class="twoCol"><div id="dlta2la" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://m.cdcfah.com/">首頁?<a href="http://m.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://m.cdcfah.com/cp/first-_nengyuan/">能源</a>?<a 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>?北京PFC電腦電源價(jià)格歡迎來電深圳市保益新能電氣供應(yīng)</p><div id="sl7hs7f" class="leftbox clearfix"><h1>北京PFC電腦電源價(jià)格歡迎來電深圳市保益新能電氣供應(yīng)</h1><div id="g2mgnnp" class="proBig"><div id="uzwol2y" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038609127250/5992744.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="g7gsuof" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038609127250/5992744.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qpmoqhe" 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>北京PFC電腦電源價(jià)格,PFC電源</p><p><span>***更新：</span>2021-01-06 07:09:32</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8polip7" 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="xwd7mws" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8u222zg" class="box"><p><p style="text-indent:25px">主動(dòng)式PFC，北京PFC電腦電源價(jià)格，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，北京PFC電腦電源價(jià)格，因?yàn)槠鋬?yōu)異功能，主動(dòng)式PFC價(jià)格也較高，北京PFC電腦電源價(jià)格。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，留意此問題，可能多花了錢卻買到在115V下沒有PFC作用的電源供應(yīng)器。主動(dòng)式PFC就是一個(gè)有源的升壓電路。北京PFC電腦電源價(jià)格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京PFC電腦電源價(jià)格,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038609127250/5992744.png"></div><p style="text-indent:25px">FC分為被動(dòng)式PFC和主動(dòng)式PFC，那么主動(dòng)式PFC和被動(dòng)式PFC都有哪些區(qū)別呢？目前市場(chǎng)上功率在250W～300W的電源多采用被動(dòng)式PFC，而主動(dòng)式PFC則常用于400W及以上電源，他們的造型結(jié)構(gòu)也是不太一樣的。接下來我們就來看看他們各自的結(jié)構(gòu)造型吧。一般情況下，被動(dòng)式PFC的電感體積較大，它由多塊硅鋼片外部纏繞銅線而成。這種設(shè)計(jì)結(jié)構(gòu)簡(jiǎn)單，成本較低。而主動(dòng)式PFC則是電感線圈，另外它還要配合有IC控制芯片，這種設(shè)計(jì)結(jié)構(gòu)復(fù)雜，成本是比較高的。被動(dòng)式的主電容一般采用兩個(gè)巨大的電解電容，這種電容的生產(chǎn)成本較低，相對(duì)于主動(dòng)式PFC來說，可以節(jié)省不少的生產(chǎn)成本。上面主動(dòng)式PFC與被動(dòng)式PFC的對(duì)比，在我們看來，好像被動(dòng)式PFC的優(yōu)勢(shì)要明顯一些。不過，被動(dòng)式PFC卻有著一個(gè)致命的缺陷，那就是在高功率電源中，主動(dòng)式PFC要比被動(dòng)式PFC省電許多。而且，它能適應(yīng)更高的電壓范圍。北京PFC電腦電源價(jià)格為了提高用電設(shè)備功率因數(shù)的技術(shù)就稱為功率因數(shù)校正。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京PFC電腦電源價(jià)格,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038685836223/2985647.png"></div><p style="text-indent:25px">開關(guān)電源pfc常見故障：無直流電壓輸出或電壓輸出不穩(wěn)定：如果保險(xiǎn)絲是完好的，在有負(fù)載情況下，各級(jí)直流電壓無輸出。這種情況主要是以下原因造成的：電源中出現(xiàn)開路、短路現(xiàn)象，過壓、過流保護(hù)電路出現(xiàn)故障，輔助電源故障，振蕩電路沒有工作，電源負(fù)載過重，高頻整流濾波電路中整流二極管被擊穿，濾波電容漏電等。在用萬用表測(cè)量次級(jí)元件，排除了高頻整流二極管擊穿、負(fù)載短路的情況后，如果這時(shí)輸出為零，則可以肯定是電源的控制電路出了故障。若有部分電壓輸出說明前級(jí)電路工作正常，故障出在高頻整流濾波電路中。高頻濾波電路主要由整流二極管及低壓濾波電容組成直流電壓輸出，其中整流二極管擊穿會(huì)使該電路無電壓輸出，濾波電容漏電會(huì)造成輸出電壓不穩(wěn)等故障。用萬用表靜態(tài)測(cè)量對(duì)應(yīng)元件即可檢查出其損壞的元件。</p><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(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。簡(jiǎn)介：計(jì)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(huì)造成交換功率的損失，此時(shí)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(dòng)式PFC（也稱無源PFC）和主動(dòng)式PFC（也稱有源式PFC）。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）。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京PFC電腦電源價(jià)格,PFC電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637406038635709246/2295771.png"></div><p style="text-indent:25px">該高頻“交流”電在經(jīng)過整流二極管整流并經(jīng)過濾波變成直流電壓（電源）向后級(jí)的PWM開關(guān)電源供電。該直流電壓在某些資料上把它稱為：B+PFC（TPW-4211即是如此），在斬波器輸出的B+PFC電壓一般高于原220交流整流濾波后的+300V，其原因是選用高電壓，其電感的線徑小、線路壓降小、濾波電容容量小，且濾波效果好，對(duì)后級(jí)PWM開關(guān)管要求低等諸多好處。目前PFC開關(guān)電源部分，起到開關(guān)作用的斬波管（K）有兩種工作方式：1、連續(xù)導(dǎo)通模式（CCM）：開關(guān)管的工作頻率一定，而導(dǎo)通的占空比（系數(shù)）隨被斬波電壓的幅度變化而變化。2、不連續(xù)導(dǎo)通模式（DCM）：斬波開關(guān)管的工作頻率隨被斬波電壓的大小變化（每一個(gè)開關(guān)周期內(nèi)“開”與“關(guān)”時(shí)間相等）。功率因素校正開關(guān)電源中的PFC開關(guān)電源部分和PWM開關(guān)電源部分的激勵(lì)部分均由一塊集成電路完成，一塊IC可以完成設(shè)計(jì)。被動(dòng)式PFC通常為一塊體積較大的電感。北京PFC電腦電源價(jià)格</p><p style="text-indent:25px">主動(dòng)PFC在低功率時(shí)，自身損耗大于被動(dòng)PFC。北京PFC電腦電源價(jià)格</p><p style="text-indent:25px">pfc對(duì)電源的重要性：我們接下來要說的，就是主動(dòng)PFC和被動(dòng)PFC電路。被動(dòng)PFC相對(duì)主動(dòng)PFC，功率因數(shù)較低，并且被動(dòng)PFC只適用于230V高壓電網(wǎng)，對(duì)于115V低壓電網(wǎng)，被動(dòng)PFC還需要一個(gè)倍壓器以適應(yīng)電網(wǎng)規(guī)格。不過，被動(dòng)PFC比主動(dòng)PFC的效能要高！此外，在主動(dòng)PFC電路中我們還會(huì)看到一個(gè)熱敏電阻，同樣是用來限制突然涌入的電流，特別是當(dāng)電源通電以及啟動(dòng)時(shí)。主動(dòng)PFC電路通常也有兩種不同的模式，電流斷續(xù)模式DCM（Discontinuous Conduction Mode）和電流連續(xù)模式CCM（ Continuous Conduction Mode）。其中DCM是指，當(dāng)電感電流為零時(shí)，PFC的MOSFET管被開啟的工作狀態(tài)；CCM是指，電感電流始終在零以上，PFC的MOSFET管被開啟的工作狀態(tài)，因此在MOSFET管中，所有的反向恢復(fù)的能量都會(huì)被浪費(fèi)。在電源PFC電路中的第二種模式（CCM）主要被用于超過200W功率輸出的電源，因?yàn)樗軌蛱峁┫鄬?duì)較低電流噪聲峰值，這意味著高功率電源可以有效抑制電流紋波，輸出更為平順的電流。不過CCM的缺點(diǎn)是耗能較高，并且在升壓二極管關(guān)閉時(shí)，會(huì)產(chǎn)生額外EMI，所以我們經(jīng)常會(huì)看到電源整流橋后通常會(huì)增加一個(gè)X電容。北京PFC電腦電源價(jià)格</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(shè)備、電源產(chǎn)品、逆變器，UPS，通訊電源，儲(chǔ)能電源產(chǎn)品、工業(yè)電源、電池充放電電源設(shè)備、電池充放電管理系統(tǒng)設(shè)備、數(shù)字電源、無功補(bǔ)償器或者功率矯正器、數(shù)字控制技術(shù)軟件、工業(yè)控制軟件、電力計(jì)量產(chǎn)品、新能源設(shè)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(shè)備產(chǎn)品、節(jié)能電子產(chǎn)品、回饋式電源負(fù)載的研發(fā)、銷售及相關(guān)信息咨詢。的公司，致力于發(fā)展為創(chuàng)新務(wù)實(shí)、誠(chéng)實(shí)可信的企業(yè)。公司自創(chuàng)立以來，投身于UPS/EPS電源，雙向逆變器，安防電源，激光儲(chǔ)能電源，是電工電氣的主力軍。保益新能繼續(xù)堅(jiān)定不移地走高質(zhì)量發(fā)展道路，既要實(shí)現(xiàn)基本面穩(wěn)定增長(zhǎng)，又要聚焦關(guān)鍵領(lǐng)域，實(shí)現(xiàn)轉(zhuǎn)型再突破。保益新能始終關(guān)注電工電氣行業(yè)。滿足市場(chǎng)需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2726578.html</p></div></div></div></div></div><div id="nhzjfhe" class="page-right twoColRt"><div id="sbd27if" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="7oimnz2" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img 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