Deriving Life Multipliers for Electrolytic Capacitors
Deriving Life Multipliers for Electrolytic Capacitors
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发表时间：
2004
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通讯作者：
S. Parler
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作者：
S. Parler
铝电解电容器通常用作电动机驱动器、UPS系统和焊机等电子设备电源部分的输入母线电容器。这些电容器中的大多数最终因磨损而失效。本文简要介绍电容器制造商如何量化外加电压、涟漪电流、频率、环境温度和气流对电容器寿命的影响。一般电容器寿命方程为
Aluminum electrolytic capacitors are routinely used as input bus capacitors in the power supply sections of electronic equipment such as motor drives, UPS systems, and welders. Most of these capacitors fail eventually from wearout. This article offers a brief explanation of how capacitor manufacturers quantify the effects of applied voltage, ripple current, frequency, ambient temperature, and airflow on capacitor life. The general capacitor life equation is