【应用】低介质损失薄膜电容器在电机驱动逆变器中的应用
在电机驱动逆变器中，电解电容器主要是进行直流回路的滤波，一般电容量很大，兼做储存电能之用。而薄膜电容器则被广泛应用在模拟信号的交连、电源噪声的旁路(反交连)等地方。薄膜电容器以塑料薄膜为电介质，具备介质损失小，具备无极性、绝缘阻抗高、频率特性优异以及介质损失很小等优势。
在选取薄膜电容器时，工程师一般会考虑额定直流/交流电压和介电强度，因为这两个参数是很重要。在信号交连的部分，使用介质损失极低的电容器，才可以确保信号在传送时，不会产生太大的失真。此外，电容器的额定电压具有较多的余裕，能够降低内阻、漏电流以及损失角，进而增加电容器的使用寿命。
图1 电机驱动逆变器框图
对于电机驱动逆变器中的薄膜电容器的选取，本文推荐Nippon Chemi-Con（黑金刚）提供的产品解决方案：TACE系列、HACE系列、TACD系列以及HACD系列薄膜电容器，工作温度为-40℃~105℃，电容公差为±5%，耗散因子低于0.05%（<1μF）或者低于（cx0.015+0.05）%（>1μF），介质损失极低，提供了出色的耐压性能，绝缘电阻不低于30000MΩ（≤0.33μF）或者不低于10000MΩ（>0.33μF）。当温度为105℃时，在1.25倍的额定电压下能够正常工作1000小时以上。
图2 TACE/HACE/TACD/HACD系列示意图（从左到右）
对于TACE系列而言，其额定电压提供250Vdc、400Vdc、630Vdc以及1000Vdc可选，不同额定电压下对应的电容值范围为15μF~22μF、6.8μF~12μF、0.47μF~4.7μF以及0.47μF~1.5μF。对于HACE系列而言，其额定电压提供630Vdc、1250Vdc、1600Vdc以及2000Vdc可选，不同额定电压下对应的电容值范围为0.47μF~1.5μF、0.47μF~1.5μF、0.27μF~0.33μF以及0.18μF~0.22μF。
对于TACD系列而言，其额定电压范围为250Vdc~1000Vdc，不同额定电压下对应的电容值范围为0.82μF~15μF（250Vdc）、0.33μF~22μF（315Vdc）、0.22μF~8.2μF（400Vdc）、0.22μF~4.7μF（500Vdc）、0.1μF~5.6μF（630Vdc）、0.056μF~3.9μF（800Vdc）以及0.033μF~1.2μF（1000Vdc）。
对于HACD系列而言，其额定电压范围为630Vdc~4000Vdc，不同额定电压下对应的电容值范围为0.047μF~1.5μF（630Vdc）、0.033μF~1.2μF（1000Vdc）、0.018μF~1.2μF（1250Vdc）、0.0068μF~0.33μF（1600Vdc）、0.0033μF~0.33μF（2000Vdc）、0.015μF~0.1μF（2500Vdc）、0.0068μF~0.047μF（3150Vdc）以及0.0039μF~0.027μF（4000Vdc）。
更多的薄膜电容器产品信息可参考世强官网提供的选型指南：https://www.sekorm.com/doc/151415.html。
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型号- FTACE631N225JEAES0,FTACE631N335JEAES0,FTACE251N156JEAES0,FTACE631N474JDADS0,TACE,FTACE401N825JEAES0,FTACE631N105JDADS0,FTACE631N155JHAHS0,FTACE401N126JFAFS0,FTACE102N474JHAHS0,FTACE102N155JFAFS0,TACE系列,FTACE251N226JFAFS0,FTACE401N106JFAFS0,FTACE251N186JEAES0,FTACE102N105JEAES0,FTACE631N684JDADS0,FTACE102N684JHAHS0,FTACE631N475JFAFS0,FTACE401N685JEAES0
TACB Series ELECTRONIC EQUIPMENT FILM CAPACITOR
型号- FTACB251V334JDLCZ0,FTACB631V684JELHZ0,TACB2F825J,TACB2E125J,TACB2G154J,TACB2G275J,FTACB801V224JELHZ0,FTACB251V685JFLEZ0,FTACB801V473JDLCZ0,FTACB3B1V224JDLCZ0,FTACB251V105JDLCZ0,FTACB401V224JDLCZ0,TACB2J394J,FTACB801V105JFLEZ0,FTACB801V125JFLEZ0,FTACB401V154JDLCZ0,FTACB401V475JTLJZ0,FTACB401V185JFLEZ0,FTACB631V155JFLEZ0,TACB2E475J,TACB2G155J,FTACB801V104JHLGZ0,FTACB251V275JELHZ0,FTACB801V823JDLCZ0,FTACB801V124JHLGZ0,TACB2J185J,TACB2J395J,FTACB3B1V394JDLCZ0,FTACB3B1V564JDLCZ0,TACB2J274J,TACB2E474J,FTACB801V394JELHZ0,FTACB401V105JELHZ0,TACB2K274J,TACB2K154J,TACB2F394J,FTACB631V124JDLCZ0,FTACB251V155JHLGZ0,FTACB401V394JHLGZ0,FTACB801V563JDLCZ0,FTACB3B1V185JELHZ0,FTACB251V226JTLJZ0,TACB2F395J,FTACB251V394JDLCZ0,TACB2F274J,FTACB401V335JFLEZ0,TACB SERIES,TACB2J155J,FTACB3B1V395JFLEZ0,FTACB3B1V335JFLEZ0,TACB2K124J,FTACB251V825JFLEZ0,TACB2F275J,FTACB631V824JELHZ0,TACB2J154J,TACB2J275J,TACB2G474J,FTACB801V564JFLEZ0,FTACB631V395JTLJZ0,TACB2E156J,FTACB801V683JDLCZ0,FTACB3B1V824JHLGZ0,TACB2K125J,FTACB251V474JDLCZ0,TACB2F155J,TACB2E155J,FTACB3B1V475JFLEZ0,FTACB401V564JELHZ0,TACB2G124J,TACB2G475J,TACB2K473J,FTACB251V106JFLEZ0,FTACB401V125JELHZ0,FTACB251V125JHLGZ0,TACB2E275J,TACB2G125J,FTACB401V104JDLCZ0,FTACB3B1V125JELHZ0,FTACB401V184JDLCZ0,FTACB631V185JFLEZ0,TACB2K474J,FTACB401V334JHLGZ0,TACB2E395J,FTACB401V684JELHZ0,FTACB801V274JELHZ0,TACB2K823J,FTACB3B1V684JDLCZ0,FTACB3B1V565JFLEZ0,FTACB631V105JFLEZ0,TACB2K564J,TACB2K334J,FTACB631V184JHLGZ0,TACB2K104J,FTACB3B1V274JDLCZ0,FTACB631V823JDLCZ0,TACB2E394J,FTACB401V474JHLGZ0,TACB2G224J,TACB2K824J,FTACB3B1V155JELHZ0,TACB2G684J,TACB2K184J,TACB2F474J,TACB2K105J,FTACB631V394JELHZ0,FTACB631V334JELHZ0,TACB2G334J,TACB2G104J,TACB2G225J,TACB2J125J,FTACB631V563JDLCZ0,FTACB251V565JFLEZ0,TACB2G184J,FTACB801V184JELHZ0,TACB2G564J,TACB2F475J,TACB2K683J,FTACB251V824JDLCZ0,FTACB251V185JHLGZ0,FTACB251V126JFLEZ0,FTACB801V333JDLCZ0,FTACB401V155JFLEZ0,TACB2G105J,TACB2G335J,TACB2G565J,TACB2E186J,FTACB401V124JDLCZ0,TACB2J124J,FTACB251V225JELHZ0,FTACB401V395JTLJZ0,FTACB401V225JFLEZ0,TACB2G185J,TACB2G824J,FTACB631V125JFLEZ0,TACB2E106J,FTACB251V684JDLCZ0,FTACB401V274JDLCZ0,FTACB251V156JTLJZ0,TACB2F125J,TACB2E825J,TACB2K333J,TACB2K563J,TACB2K684J,TACB2K224J,FTACB251V335JELHZ0,TACB2J474J,TACB2E185J,FTACB3B1V474JDLCZ0,FTACB3B1V105JHLGZ0,FTACB401V824JELHZ0,TACB2J224J,FTACB631V474JELHZ0,TACB2E226J,TACB2E105J,FTACB251V564JDLCZ0,TACB2K393J,TACB2E335J,TACB2E565J,FTACB631V683JDLCZ0,TACB2E824J,TACB2J823J,TACB2J334J,TACB2J564J,FTACB801V474JELHZ0,FTACB631V225JFLEZ0,TACB,FTACB3B1V225JELHZ0,TACB2E334J,TACB2E564J,TACB2E225J,TACB2E685J,FTACB631V335JTLJZ0,TACB2K394J,TACB2F224J,TACB2F684J,TACB2J824J,FTACB251V475JELHZ0,FTACB251V186JTLJZ0,FTACB401V275JFLEZ0,TACB2J335J,FTACB3B1V825JFLEZ0,FTACB3B1V685JFLEZ0,TACB2J105J,TACB2G394J,TACB2E684J,FTACB631V564JELHZ0,TACB2F225J,FTACB631V104JDLCZ0,FTACB631V224JHLGZ0,FTACB801V334JELHZ0,TACB2J683J,FTACB3B1V334JDLCZ0,FTACB401V565JTLJZ0,TACB2F334J,TACB2F685J,TACB2J184J,TACB2F564J,FTACB801V393JDLCZ0,FTACB631V154JDLCZ0,TACB2J104J,TACB2J225J,FTACB801V684JFLEZ0,TACB2G274J,FTACB3B1V275JELHZ0,FTACB631V275JTLJZ0,TACB2G395J,FTACB631V274JHLGZ0,TACB2E126J,TACB2F105J,FTACB251V395JELHZ0,TACB2F824J,TACB2F185J,FTACB801V154JHLGZ0,TACB2F335J,TACB2J563J,TACB2J684J,FTACB801V824JFLEZ0,TACB2F565J
450v25uf_50uf的电机启动电容有什么好品牌可以推荐吗？质量要好的。
推荐日本的NIPPON CHEMI-CON和法国EXXELIA的铝电解电容，NIPPON CHEMI-CON是铝电解电容器的顶级制造商，全球市场占有率位列首位，深受客户的信赖，品牌口碑持续保持行业最前列。EXXELIA是一家生产和制造高性能的电子元器件以及机电产品的专业公司，产品广泛应用于国防，军工，航空航天以及石油，铁路，医疗，通讯，高端工业等领域。另外推荐德国WIMA的薄膜电容，WIMA作为电容制造业中的领头企业之一，在被动电子元件领域有很悠久的历史，在德国市场和欧洲市场都有很高的地位。
电子商城
现货市场
服务
整体外形尺寸小至0.6*0.3*0.3mm (DFN0603)，工作电压范围覆盖2.5V~36V，电容值低至0.2pF，浪涌能力最高可达240安培，静电等级可达空气放电、接触放电±30KV。提供免费浪涌测试仪、静电测试仪测试。
提交需求>
可定制OGS一片式电容屏，G+G电容屏，G+F电容屏，G+F+F电容屏，尺寸范围：1”~21”，单层产品厚度：0.55mm~2mm，可按客户要求在产品上附加防反射，防指纹，多色丝印，钻孔磨边，2.5D导圆角等工艺。
最小起订量： 1000 提交需求>
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
授权代理品牌：仪器仪表及测试配组件
授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
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