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id="6ulmovb9" class="row"> <div id="6ulmovb9" class="wrap-content-in w-system w-productcom"> <div id="6ulmovb9" class="w-system-in">  <div id="6ulmovb9" class="newsDetail"> <div id="6ulmovb9" class="newsDetail-in"> <h1 class="newsTitle ">「逆变电源」逆变器IGBT?？榈挠τ梅治?，并联使用</h1> <div id="6ulmovb9" class="newsST"> <span id="6ulmovb9" class="newsSec">栏目：电源知识</span> <span id="6ulmovb9" class="newsTime" >发布时间：2023-01-04</span> </div> <div id="6ulmovb9" class="newsSummary">逆变器IGBT?？榈挠τ梅治?br/>　　(1)根据负载的工作电压和额定电流，以及使用频率，选择合适规格的?？?。</div> <div id="6ulmovb9" class="newsContent"> <div id="6ulmovb9" class="newsContent-in"> <h2><span style="font-size: 18px;">　　逆变器IGBT?？榈挠τ梅治?/span></h2><p><span style="font-size: 18px;">　　(1)根据负载的工作电压和额定电流，以及使用频率，选择合适规格的模块。</span></p><p><span style="font-size: 18px;">　　使用?？榍?，请详细阅读?？椴问荼?，了解模块的各项技术指标;根据?？榈募际醪问范ㄊ褂梅桨?，计算通态损耗和开关损耗，选择匹配的散热器和驱动电路。</span></p><p><span style="font-size: 18px;">　　<strong>(2)IGBT?？榈氖褂?/strong></span></p><p><span style="font-size: 18px;">　　1.防静电IGBT是一种静电敏感设备。为了防止静电对设备造成损害，应注意以下两点:</span></p><p><span style="font-size: 18px;">　?、買GBT?？榍俗由系暮谏Ｃ嗍且恢址谰驳绮牧?。当用户使用连接器的导线时，取下防静电材料，立即插入导线;没有防静电措施时，不要用手触摸驱动端子。</span></p><p><span style="font-size: 18px;"><br/></span></p><p><span style="font-size: 18px;"><img src="/home/8/2/6cyrt8/resource/2021/07/01/60dd82c2672ba.jpg" data-sid="431796"/></span></p><p><span style="font-size: 18px;"><br/></span></p><p><span style="font-size: 18px;">　?、诘毙枰附忧俗邮?，设备或电烙铁必须接地。</span></p><p><span style="font-size: 18px;">　　<strong>2.选择和使用</strong></span></p><p><span style="font-size: 18px;">　?、偾朐谧畲蠖疃ㄖ?电压、电流、温度等)范围内使用产品。)范围。一旦超过最大额定值，产品可能会损坏，特别是当IGBT施加超过VCES的电压时，可能会发生雪崩击穿，元件可能会损坏。请务必在VCES的额定值范围内使用!工作频率越高，工作电流越小;出于可靠性原因，必须考虑安全因素。</span></p><p><span style="font-size: 18px;">　?、谇缏?由于IGBT Vce(sat)与短路耐受能力的权衡关系，建议选择栅极电压为+VGE=14~15V，-VGE=5~10V，以保证?？榍松系那锹闱蟮牡缪购筒ㄐ?栅极电阻Rg与IGBT的开关特性密切相关，降低Rg值降低了开关损耗，减少了下降时间，提高了关断脉冲电压。</span></p><p><span style="font-size: 18px;">　　内容相关：<a href="http://www.ekyou.cn/article-15039-61548.html" target="_self">逆变器核心部件IGBT介绍，机械故障?；?/a></span></p><p><span style="font-size: 18px;">　　反之，当栅极电阻Rg值增大时，会增加开关损耗，影响开关频率;应根据浪涌电压和开关损耗(与频率相关)之间的最佳折衷选择适当的Rg值，一般在5ω到100ω之间。为了防止栅极开路，建议在栅极和发射极之间并联一个约20KΩ的10K电阻。</span></p><p><span style="font-size: 18px;">　　驱动布线应尽可能短，并使用双绞线;接通电源时，请先接通驱动控制部分的电源，使驱动电路工作，然后再接通主电路电源。</span></p><p><span style="font-size: 18px;">　　③?；さ缏?IGBT模块的接线电感在使用高频时容易产生峰值电压。必须注意降低布线电感和组件配置。应注意以下?；は钅?过流?；ぁ⒐贡；?、闸门过压和欠压保护、安全工作区、超温?；?。</span></p><p><span style="font-size: 18px;">　　④吸收电路:由于IGBT开关速度快，容易产生浪涌电压，必须提供浪涌箝位电路。</span></p><p><span style="font-size: 18px;">　?、莶⒘褂?应考虑器件间的门电路、线路布线、电流不平衡和温度不平衡，选用正温度系数，饱和压降在同一水平(同批次)。</span></p><p><span style="font-size: 18px;">　?、奘褂檬鼻氡芸葱云搴脱现胤鄢镜牡胤?。</span></p><p><span style="font-size: 18px;">　　<strong>(3) IGBT安装</strong></span></p><p><span style="font-size: 18px;">　　①散热器应根据工作环境和?？椴问衅ヅ浜脱≡?，以保证?？楣ぷ魇倍陨⑷绕鞯囊蟆?/span></p><p><span style="font-size: 18px;">　?、谏⑷绕鞯谋砻婀饨喽扔π∮?0mm，各螺钉之间的平面畸变应小于10mm。如果散热片表面凹陷，会导致接触热阻增加。为了降低接触热阻，建议在散热器和?？橹渫恳槐〔愕既雀?。?？槭芰群?，最好能看到一点点热糊从?？楸咴导烦隼础?最好使用丝网印刷技术在散热片表面印刷导热膏)</span></p><p><span style="font-size: 18px;">　?、鄣蹦？榘沧霸谏⑷绕魃鲜?，应以手册中给出的扭矩拧紧螺钉。扭矩不足会导致热阻增加或运动中螺钉松动。过大的扭矩可能会损坏?？橥饪腔蚰？榫?</span></p><p><span style="font-size: 18px;">　?、艿敝话沧耙桓瞿？槭?，安装在散热器中央，使热阻效果最佳。</span></p><p><span style="font-size: 18px;">　?、莅沧岸喔瞿？槭?，应根据各模块的发热情况预留相应的空间，发热量大的模块应预留更多的空间。</span></p><p><span style="font-size: 18px;">　?、拊诹降惆沧敖艄搪荻な?，先依次拧紧1/3额定扭矩，再反向拧紧额定扭矩。</span></p><p><span style="font-size: 18px;">　　⑦四点安装与两点安装类似，IGBT的长方向遵循散热片的图案。拧紧螺钉时，依次对角拧紧额定扭矩的1/3，然后按相反顺序达到额定扭矩。</span></p><p><span style="font-size: 18px;">　?、嗍褂糜形评淼呐?，IGBT的长方向顺着暖气片的纹理，减少暖气片的变形。两个?？榘沧霸谝桓錾⑷绕魃鲜?，要短方向并排放置，中间留有足够的距离，主要是为了减少风扇散热时的热量积累，便于散热，最大限度地提高散热器的效率。</span></p><p><span style="font-size: 18px;">　　第二是?？槎俗尤菀琢樱欣诮档驮由⒌绺?，尤其是在高频使用时。</span></p><p><span style="font-size: 18px;">　?、崃由璞甘保幽？榈哪赶卟挥Ω？榈闹鞫俗拥缂斐晒蟮幕涤α腿扔α?，以防止模块电极的内部焊接断裂或电极端子发热导致?？楣取?/span></p><p><span 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