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class="info_con_tit"> <div id="6aplaizydtj" class="info_con_tit"> <div id="6aplaizydtj" class="n_tit"> <span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網(wǎng)責(zé)任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span id="cntrHits">-</span></span><span>發(fā)表時(shí)間??012-12-04 15:00:00</span> <div id="6aplaizydtj" class="newchang">  <div class="6aplaizydtj" id="ckepop"> <a class="jiathis jiathis_txt jtico jtico_jiathis" target="_blank">分享到：</a> <a class="jiathis_button_qzone">QQ空間</a> <a class="jiathis_button_tsina"> 新浪微博</a> <a class="jiathis_button_tqq">騰訊微博</a> <a class="jiathis_button_tsohu">搜狐微博</a> <a class="jiathis_button_t163">網(wǎng)易微博</a> <a class="jiathis_button_tools_1"></a><a class="jiathis_button_tools_2"></a> </div> <script type="text/javascript"> var jiathis_config = { "data_track_clickback": true };</script> <script type="text/javascript" src="http://v2.jiathis.com/code/jia.js?uid=899792" charset="utf-8"></script>  </div> </div> </div> </div> <div class="6aplaizydtj" id="cntrBody"> <p>在一般的理論分析中，為了簡(jiǎn)化分析過(guò)程，通常忽略功率<a href="http://linhang.com.cn/"><strong>高頻變壓??/strong></a>的勵(lì)磁電感和漏感，以便獲得電路工作的基本原理和基本特征。實(shí)際上，寄生參量是客觀存在的，而且隨著開(kāi)關(guān)頻率的提高，分布參數(shù)的影響越嚴(yán)重??/p> <p>1.分布電容：在實(shí)際變壓器的繞組中存在著分布電容，尤其存在于線圈導(dǎo)線和變壓器磁心之間以及各繞組之間。電容量的大小取決于繞組的幾何形狀、磁心材料的介電常數(shù)和它的封裝材料等。在等效電路中，在每一理想線圈兩端并聯(lián)一個(gè)集中的電容??/p> <p>2.漏感：在實(shí)際變壓器中，如果初級(jí)與次級(jí)之間、匝與匝之間、層與層之間磁通沒(méi)有完全耦合，就會(huì)產(chǎn)生漏感。漏感能量表示線圈間不耦合磁通經(jīng)過(guò)的空間存儲(chǔ)的能量。在等效電路中，漏感與理想變壓器激勵(lì)線圈串聯(lián)，其存儲(chǔ)的能量與激勵(lì)線圈電流的平方成正比??/p> <p>3.勵(lì)磁電感：由于磁導(dǎo)率是有限的，則在原邊繞組中就有勵(lì)磁電流存在。這一增加的電流可以在等效電路中增加一個(gè)和原邊線圈并聯(lián)的勵(lì)磁電感Lm來(lái)表示。勵(lì)磁電感能量表示有限磁導(dǎo)率的磁芯中和兩半磁芯結(jié)合處氣隙存儲(chǔ)的能量。存儲(chǔ)的能量與加到線圈上每匝伏特有關(guān)，與負(fù)載電流無(wú)關(guān)??/p> </div> <div id="6aplaizydtj" class="apage" id="showfenye">  <script type="text/javascript"> var pagecont=1; if(pagecont > 2) { var ss = new Cls_jsPage(1, 1, 5, "ss"); ss.setPageSE("jieshaogaopinbianyaq_", ".html"); 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