摘要
整流滤波用电解电容器容值的改变不仅影响输出电压,还会影响电容本身的纹波电流,进而对损耗和电容本身的寿命带来影响。本文建立了滤波电容纹波电流的数学模型,利用Saber仿真结果和计算结果对比验证了模型的正确性。基于所建立的数学模型分析了容值变化对纹波电流和电容损耗的影响,进一步完善了滤波电容的选取依据。
The value of the electrolytic capacitor in the rectifier circuit will affect not only the output voltage but also the ripple current, the power loss and the life of the capacitor.A mathematical model of the filter capacitance s ripple current is presented in this paper, whose effectiveness is verified by the comparison between the calculation results with the proposed model and the simulation results with the Saber software.The capacitance s influence on the ripple current and the power loss of the capacito...
出处
《电源世界》
2008年第10期70-73,69,共5页
The World of Power Supply
关键词
电解电容损耗
纹波电流
electrolytic capacitor loss
ripple current
