基于硕凯压敏电阻14D561K的IGBT快速开关电路,在浪涌抗干扰度试验中通过4级,且试验电压提高10%
一、 应用背景
近年来,随着电力电子技术的发展,绝缘栅双极性晶体管(IGBT)开关频率可达100kHz以上。最近,采用IGBT代替续电器可实现快出口,已在弧光保护装置、智能选相控制器中得到了一定的应用。但是由于单管的IGBT的耐压低,易损坏,而且在变电站中IGBT开关电路极易受到雷击浪涌的干扰。在EMC试验中浪涌抗扰试验是衡量IGBT开关电路的一个重要指标,试验非常难通过。
二、浪涌干扰模式
在国家标准GB/T 1726.5-2008中规定,浪涌电压波形为1.2/50μS,浪涌电流波形为8/20μS。行业内简称820组合波。如图1图中可以看出,骚扰越高,持续的时间越长,能量主要集中在1MHZ以下,具有极强的共模、差模破坏能量骚扰。而在变电站中保护设备中出口接点位置必须过浪涌4等级,也就是差模2KV,共模4KV。
三、浪涌干扰对IGBT开关的影响
浪涌干扰主要分为共模干扰、差模干扰;差模干扰主要以传导方式干扰IGBT开关端口。由于单管IGBT对过电压敏感,在浪涌试验中对单管IGBT的C、E 两端直接测试差模干扰,易击穿单管IGBT,因此需要对出口回路进行保护。如下图:
本试验选用压敏电阻14D561K:击穿电压:504V-616V;通流量IPP高达4500A;位电压最大值925V(50A);工作温度:-55至+125℃;具有通流量大、残压低、响应时间快等特点。当干扰电压达到一定值时,就会把两端的电压钳位住,从而保护IGBT不被击穿。
五、IGBT开关电路的PCB设计与注意事项
在PCB电路上,将控制回路与驱动回路分开布线从而减少干扰;出口回路线尽量加粗、加宽;有的工程在设计时只安正常最大电路设计忽略了浪涌这边的电路设计,在这里提醒注意一下。IGBT下方需增大焊盘,做铺铜处理,以保证IGBT散热。
六、试验结果与分析
在浪涌抗干扰度试验中,在通过4级的基础上,试验电压可提高10%;原因是不同厂家仪器会有些误差,并且在试验过程中,产品不拒动、误动。浪涌试验结果如下表:
七、总结与思考
通过对单管IGBT器件的试验应用,采用IGBT和继电器并联方式,实现快速出口功能的同时,并联的继电器减小IGBT的通流。为提高IGBT开关电路的差模干扰,选取合适的浪涌抑制器件,抑制浪涌对IGBT的损坏,从而提高了整体的保护,安全。
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本文由ll转载自硕凯电子,原文标题为:压敏电阻 14D561K 在 IGBT 快速开关电路中的应用,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
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硕凯电子(Socay)MOV压敏电阻选型指南
目录- Radial Lead Metal Oxide Varistor
型号- 14D181K,40D271K,25D301K,10D681KJ,10D221KJ,07D121KJ,14D821K,20D470K,20D361K,14D182KJ,10D112KJ,40D911K,14D180K,07D220K,32D361K,05D621K,53D122K,07D680K,14D820K,25D751K,10D560KJ,14D301KJ,10D331KJ,20D181KJ,07D241KJ,07D241K,32D241K,32D471K,40D152K,05D511K,07D471K,20D201KJ,10D220KJ,34S621K,05D470KJ,20D431KJ,20D121K,14D390KJ,53D112K,05D361KJ,07D680KJ,14D181KJ,07D471KJ,07D121K,14D182K,53D221K,53D681K,20D471K,20D241K,10D561KJ,20D182KJ,32D122K,10D330KJ,05D820K,07D221KJ,34S821K,14D270KJ,25D511K,05D241KJ,10D511K,40D182K,05D471KJ,05D180K,34S182K,20D151K,14D391KJ,20D781KJ,07D681KJ,07D361K,20D911K,05D121KJ,07D470K,10D621K,07D330KJ,07D561KJ,20D271K,10D121KJ,14D511KJ,32D221K,32D112K,07D220KJ,14D621KJ,53D361K,32D681K,10D680KJ,14D271KJ,10D241KJ,10D751K,32D331K,10D911KJ,53D241K,14D781KJ,32D561K,25D621K,40D391K,53D471K,07D560KJ,05D680KJ,32D102K,20D331KJ,10D470KJ,40D122K,20D431K,10D820KJ,20D681KJ,20D201K,10D301K,20D221KJ,20D781K,25D681K,10D361KJ,05D201K,25D122K,05D431K,34S301K,07D151KJ,07D301K,20D561KJ,53D301K,05D390KJ,20D330KJ,40D112K,40D221K,40D681K,25D561K,25D331K,34S201K,34S431K,40D,07D431K,10D821KJ,10D471KJ,07D201K,20D220KJ,14D471K,05D511KJ,20D911KJ,20D151KJ,14D241K,40D331K,40D561K,32D391K,25D221K,53D,25D112K,05D621KJ,05D270KJ,14D911KJ,53D751K,14D151KJ,14D470K,20D560KJ,07D271KJ,14D361K,05D391KJ,07D470KJ,32D271K,14D270K,14D391K,05D751K,53D331K,53D561K,20D112K,20D220K,20D680K,14D470KJ,53D102K,05D151KJ,32D911K,14D390K,25D102K,07D781K,40D361K,05D271KJ,34S511K,10D431K,07D361KJ,10D201K,10D781K,20D122K,07D820KJ,20D241KJ,20D471KJ,07D330K,05D301K,07D681K,07D560K,20D680KJ,32D,20D,40D241K,40D471K,32D152K,53D781K,20D102K,07D221K,05D820KJ,10D331K,10D330K,10D560K,10D681K,10D101K,14D471KJ,20D331K,20D561K,53D431K,53D201K,10D151KJ,14D271K,14D361KJ,07D561K,25D431K,25D201K,20D101K,07D101K,07D331K,34S751K,10D561K,10D102K,14D911K,20D221K,20D560K,20D681K,20D330K,07D821KJ,25D781K,14D151K,20D470KJ,10D,05D121K,20D621K,34S122K,05D201KJ,20D361KJ,05D431KJ,34S,20D820KJ,14D102K,32D511K,40D301K,25D271K,10D511KJ,14D121KJ,14D821KJ,05D241K,20D511K,14D241KJ,05D471K,10D271KJ,10D220K,10D221K,05D180KJ,10D112K,10D680K,14D101K,14D331K,14D561K,32D621K,25D391K,07D181KJ,07D301KJ,20D821KJ,34S241K,34S471K,05D361K,07D621K,10D241K,05D470K,10D471K,14D680KJ,14D431K,14D201K,25D,25D152K,40D751K,14D820KJ,07D751KJ,10D270KJ,10D121K,20D121KJ,10D621KJ,10D391KJ,25D911K,14D781K,25D361K,14D,40D102K,14D330KJ,05D301KJ,14D560KJ,34S102K,05D101K,05D561K,05D331K,07D511KJ,07D391KJ,14D221KJ,14D681KJ,14D122K,14D112KJ,10D751KJ,40D781K,05D221K,05D330K,05D560K,05D681K,34S781K,20D301K,07D511K,10D361K,10D390KJ,10D470K,20D122KJ,53D511K,07D270KJ,14D121K,10D182KJ,14D331KJ,40D201K,40D431K,14D561KJ,34S112K,34S681K,05D220K,07D390KJ,34S221K,05D680K,14D220KJ,53D621K,14D112K,14D221K,14D560K,14D681K,10D301KJ,07D621KJ,14D122KJ,05D,14D330K,25D471K,25D241K,20D751K,07D751K,34S561K,20D271KJ,34S331K,32D821K,05D181KJ,14D680K,10D181KJ,14D220K,14D102KJ,53D391K,10D911K,07D271K,07D781KJ,10D271K,05D391K,05D270K,05D390K,20D112KJ,34S271K,05D220KJ,07D,20D511KJ,07D151K,34S911K,53D271K,32D781K,10D151K,20D270KJ,05D681KJ,20D621KJ,53D911K,20D101KJ,20D182K,32D201K,32D431K,10D180KJ,14D751K,20D391KJ,05D560KJ,05D751KJ,14D101KJ,07D390K,10D201KJ,14D431KJ,20D391K,14D621K,20D270K,05D221KJ,07D101KJ,10D390K,05D561KJ,05D330KJ,53D152K,07D270K,07D391K,10D270K,07D331KJ,05D181K,20D390K,34S391K,14D511K,20D102KJ,10D391K,40D821K,20D390KJ,10D781KJ,10D182K,07D180KJ,07D821K,53D821K,14D180KJ,32D301K,25D182K,40D511K,53D182K,05D331KJ,34S361K,10D102KJ,40D621K,20D821K,07D180K,10D180K,10D820K,05D151K,34S152K,10D431KJ,14D201KJ,20D181K,25D821K,32D751K,14D751KJ,07D431KJ,20D301KJ,07D201KJ,20D751KJ,20D820K,07D181K,05D101KJ,10D181K,10D821K,07D820K,05D271K,10D101KJ,14D301K,20D180K,20D180KJ
硕凯电子压敏电阻选型表
提供硕凯直径5D、7D、10D、14D、20D、25D、32D以及SM4032系列MOV压敏电阻产品选型,VAC电压从11V~1000V,浪涌电流高达20000A
产品型号
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品类
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系列(Series)
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VAC(V)
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VDC(V)
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V1mA(V)
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IP(A)
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VC(V)
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I Standard(1 Time)(A)
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I Standard(2 Times)(A)
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Maximum Energy(10/1000μs)Standard(J)
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Rated Power(W)
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Typical Capacitance@1KHz(pF)
|
05D180K
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压敏电阻
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05D Series
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11V
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14V
|
18V(15V~21.6V)
|
1A
|
40V
|
100A
|
50A
|
0.4J
|
0.01W
|
1400pF
|
选型表 - 硕凯电子 立即选型
硕凯电子SC0402ML-SC0603ML Series多层片式压敏电阻器选型表
硕凯电子多层片式压敏电阻器/Multilayer Chip Varistor选型,工作电压最大有效值4V-20V,工作电压最大直流电压值5.5V-26V,额定电压8V-31V,过电压最大允许电压19V-51V,电容85pF-270pF,最大峰值电流20A或30A,瞬态能量峰值0.05J或0.1J。
产品型号
|
品类
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Working Voltage Vrms Volts (Max.)
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Working Voltage VDc Volts (Max.)
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Varistor Voltage Vv Volts
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Varistor Voltage △Vv %
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Clamping Vottage Vc Volts (Max.)
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Capacitance Cp pF(Typical)
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Peak Current Imax Amps (Max.)
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Transient Energy Wmax Joules (Max.)
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SC0402ML080M
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Multilayer Chip Varistor
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4
|
5.5
|
8
|
±20
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19
|
270
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20
|
0.05
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选型表 - 硕凯电子 立即选型
【经验】压敏电阻防雷的工作原理及特点
压敏电阻器相当于一个可变电阻,它是并联于电路中的,当电力线被雷击时,雷电波的高电压使压敏电阻击穿,雷电流通过压敏电阻流入大地,使电力线上的电压被钳制在安全范围内。压敏电阻的性能稳定、通流能力大,由于其突波承受能力取决于它的物理尺寸,因而有可能获得不同的浪涌电流值。
设计经验 发布时间 : 2019-03-24
【选型】压敏电阻10D821K可替换S10K510用于低压电器上,重要参数均一致
在低压电器上,有些工程师会用到Epcos的压敏电阻,为了增加替选方案,有时需要考虑其他的型号,比如硕凯电子的10D821K,就可以替换Epcos的S10K510,可增加备选方案。
器件选型 发布时间 : 2021-10-16
关于压敏电阻,你需要知道这4个参数
压敏电阻具有非线性良好、通流容量大、常态泄露电流小、残压水平低、动作响应快、无续流等优点。在电子设备电源线、信号线浪涌防护有着广泛的应用。
器件选型 发布时间 : 2019-03-26
20D Series Radial Lead Metal Oxide Varistor (MOV)
型号- 5D SERIES,14D,20DXXXKJ,20D470KJ,10D,20D431K,20D681KJ,20D112K,20D201K,20D621K,20D221KJ,20D361KJ,20D151K,20D470K,20D820KJ,20D112KJ,20D220K,20D680K,20D361K,7D SERIES,20D781K,20D781KJ,20D SERIES,20D152KJ,20D511KJ,20D911K,20D301K,20D511K,20D270KJ,5D,20D271K,20D621KJ,20D162K,20D101KJ,20D182K,20D122KJ,20D122K,20D561KJ,20D391KJ,20D162KJ,20D330KJ,20D181KJ,20D241KJ,20D471KJ,20D821K,20D680KJ,20D,20D201KJ,20D102K,20D821KJ,20D220KJ,20D431KJ,20D391K,20D181K,20D270K,20D121K,20D331K,20D561K,20D301KJ,20D911KJ,20D151KJ,20DXXXXX,20D820K,20D751KJ,14D SERIES,20D751K,20D101K,20D271KJ,7D,20D121KJ,20D390K,10D SERIES,20D102KJ,20D560K,20D221K,20D471K,20D681K,20D152K,20D330K,20D241K,20D182KJ,20D390KJ,20D560KJ,20D331KJ,20D180K,20D180KJ
【应用】国产气体放电管、ESD阵列和PTC正温度系数压敏电阻组成千兆端口防护
客户在研发一款工业数据采集器有一颗千兆网口,需要多颗PTC、气体放电管、ESD阵列来完成设计,硕凯端口保护方案可以满足客户需求并且可以提供EMC相关方案整改。
应用方案 发布时间 : 2023-02-09
电子商城
品牌:硕凯电子
品类:Surface Mount Multilayer Varistor
价格:¥0.0640
现货: 5,148,500
品牌:硕凯电子
品类:Surface Mount Multilayer Varistor
价格:¥0.0375
现货: 2,050,028
服务
测试1.2/50us-8/20us组合波,10/700us-5/320us组合波,8/20us单波。能够模拟雷电瞬变引起的浪涌冲击抗干扰测试,最高电压达20KV,电流达20KA。点击预约,支持到场/视频直播测试,资深专家全程指导。
实验室地址: 深圳/上海 提交需求>
测试等级:空气放电30KV±5%;接触放电30KV±5%,适用标准:GB/T 17626.2、IEC61000-4-2、ISO10605、GB/T 19951;给用户产品出电路保护设计方案建议及整改。点击预约,支持到场/视频直播测试,资深专家全程指导。
实验室地址: 深圳/上海 提交需求>
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