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<section> <article> <h1>三相PFC矩陣變換器電路拓?fù)浼肮ぷ髟?/h1> <div id="iisaumo" class="authorTimeSource"> <span>作者：</span> <span>時(shí)間：2011-06-25</span> <span>來源：網(wǎng)絡(luò)</span> <link rel="stylesheet" type="text/css"/> <span style="float:right; width:130px;margin-right:0px; text-align:right;"> <div id="kog4i4q" class="nav0"> <ul> <li><a href="javascript:void(0);"><img src="http://www.ex-cimer.com/event/action/images/icon_add_4.png" width="20" border="0" align="absmiddle" />加入技術(shù)交流群</a> <ul> <li style="text-align:center;"><img src="http://www.ex-cimer.com/event/company/images/code_1.jpg" width="130"><br />掃碼加入<br />和技術(shù)大咖面對面交流<br />海量資料庫查詢</li> </ul> </li> </ul> </div> </span> <span style="float:right; width:30px;margin-right:0px; text-align:right;"><a rel="nofollow">收藏</a></span> </div> <div id="mooyqqa" class="hAd4_Afinal20a_back">  <iframe id='a890e388' name='a890e388' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=88&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' 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style="font-size:14px;">圖1示出三相PFC矩陣變換器電路拓?fù)?。該矩陣變換器的開關(guān)是由兩個(gè)背靠背的IGBT組成的。這樣組成的開關(guān)可對正負(fù)兩個(gè)方向的電壓和正反兩個(gè)方向的電流進(jìn)行導(dǎo)通和截止,因此該開關(guān)具有四象限功能[1]。每個(gè)H橋的對角線上兩個(gè)雙向開關(guān)互補(bǔ)通斷,就可將等伏秒面積的雙極性電壓脈沖通過高頻變壓器傳遞給次級輸出。每一開關(guān)的導(dǎo)通寬度均由模擬調(diào)壓板通過對交流電壓前饋uphase、輸出電壓反饋uout及初級電流取樣值ipri作為輸入,再由模擬調(diào)壓板中的PFC專用芯片UC3854BN運(yùn)算得到。CPLD板綜合DSP板,模擬調(diào)壓板的輸入,發(fā)出6路脈寬調(diào)制波驅(qū)動(dòng)6只雙向開關(guān)VQ1～VQ6。圖2示出控制系統(tǒng)框圖。 <P sizset="4" sizcache="3"> <img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20131227/211244_1_0.jpg" border=0></P> </span>  <div class="smwe4qm" id="coverDiv" class="article_reg" style="width:100%;overflow:hidden;display:none;z-index:10;position:absolute;left:0;background:#fff;"> <center> <img src="https://webstorage.eepw.com.cn/images/display/reg.jpg" border="0" usemap="#Map" /> <map name="Map" id="Map"> <area shape="rect" coords="133,235,319,253" 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