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如何減小高頻變壓器的漏感?</h3>
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<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
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<p> <strong>高頻變壓??/strong>的漏感是高頻變壓器設(shè)計(jì)考慮的重??跟變壓器的參數(shù)還是有一定關(guān)系的，但主要還是在鐵芯結(jié)構(gòu)、材質(zhì)和線圈結(jié)構(gòu)有關(guān)??/p>
<p> 1.減小漏感的話，最好采用卷鐵芯或者斜接的鐵芯，減小磁??/p>
<p> 2.選用高磁導(dǎo)率的材料，比如取向硅鋼或者非晶材??/p>
<p> 3.增大線圈的卷幅，增加原邊和副邊的接觸面積，縮短原邊和副邊的距離，這樣耦合效果比較好，也能減小漏感??另外也有一些特殊的方式來減小漏感，比如說，原邊和副邊進(jìn)行絞線繞制的，這樣可以大幅度降低漏感，但僅適用于低壓的產(chǎn)品??br />
<br />
因?yàn)楦哳l干式變壓器的漏感愈大，產(chǎn)生的尖峰電壓幅度愈高，漏極鉗位電路的損耗就愈大。這必然導(dǎo)致電源效率降低，對于一個(gè)符合絕緣及安全性標(biāo)準(zhǔn)的高頻變壓器漏感量應(yīng)為次級開路時(shí)初級電感量的 1 %-3 %。所以，在設(shè)計(jì)高頻干式變壓器時(shí)必須把漏感減至最小。而要想達(dá)??1 %以下的指標(biāo)，在制造工藝上將難于實(shí)現(xiàn)。因此，想減小高頻干式變壓器漏感時(shí)，可采取以下措施： <br />
<br />
1、減小初級繞組的匝數(shù) NP ??br />
<br />
2、減小各繞組之間的絕緣層??br />
<br />
3、增加繞組的高、寬比；</p>
<p> 4、增加繞組之間的耦合程度??/p>
<p> 5、增大繞組的寬度。例如：選EE型磁??以增加骨架寬??<br />
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