摘要
在桥式整流滤波电路中,滤波电容的一般按公式RLC≥(3～5)T/2选取,往往认为滤波电容越大越好。采用Multi-sim10仿真软件对电容滤波电路的滤波电容参数改变时,输出电压波形、流经整流二极管的脉动冲击电流和电路接通后进入稳态的时间等方面进行了仿真实验测试,结果表明,增大滤波电容对改善输出电压波形和提升输出直流电压数值的作用有限,且随着滤波电容容量的增大,电路接通后进入稳态的时间也随之增长,流经整流二极管的脉动冲击电流也不断增大。滤波电容的容量不宜过大。
In a bridge rectifier filter circuit,parameter of filter capacitor is chosen under formula RLC≥（3~5）T/2.It＇s usually think that the bigger value is better.Simulation experiment with Multisim 10 simulation software is conducted.Waves of output voltage,impulse current flowing through rectifier diode and recovery time are analyzed when the parameters of filter capacitor circuit is changed.The result shows that to increase filter capacitor has little effect on improving waves of output voltage and raising the values of direct current.With the increasing of filter capacitor＇s value,the time to enter steady state prolongs and impulse current flowing through rectifier diode is rising.The value of filter capacitor should not be too big.
出处
《科学技术与工程》
北大核心
2013年第3期739-743,共5页
Science Technology and Engineering
基金
辽宁经济社会发展立项课题基金项目(2012lslktzijyx-06)
2012年度辽宁省普通高等教育本科教学改革研究立项项目(辽教发[2012]130号)
2011年度渤海大学高等教育教学改革研究项目资助
