摘要
电解电容器作为变频器/逆变器的整流滤波电容器,通常认为其最主要的参数是额定电压、电容量,通常采用电解电容器作为整流滤波电容器。实际上,对于三相桥式整流电路,输出母线上的电解电容器的主要作用是吸收直流母线上的整流纹波电流和由逆变器所产生的纹波电流。因而电解电容器的ESR、ESL以及由此而产生的阻抗-频率特性将显得比电容量更为重要。
Elcctrolytic Capacitor used as rectify filter capacitor of transducer/inverter, the most important parameters of it arc actually recognized as rating voltage,capacitance, electrolytic Capacitor is actually used as rectify filter capacitor. In practical, taken in the rectifier ripple current of the DC bus and the ripple current created by the inverter are the most important functions of electrolylic Capacitor used in three phase bridge rectifier output bus. So, ESR,ESL of the electrolytic Capacitor and the resistance frequency characteristic folowed by it are seemed to be more important than capacitance.
出处
《电源世界》
2008年第6期68-70,共3页
The World of Power Supply
关键词
电晰电容器
ESR
纹波电流
寿命
electrolyte capacitor
ESR
ripple current
using life
