摘要
为提高船用三相三线无中点的供电系统的电能品质,本文通过Scott变压器把三相380V交流输入变换成两路220V的单相交流电,利用成熟的单相有源功率因数校正技术(APFC)来实现三相功率因数校正。采用单周期控制技术的控制芯片IR1150用来实现APFC,降压斩波电路采用双管正激变换结构并利用控制芯片UC3844完成,均流控制采用民主均流法的控制芯片UC3907。实验结果证明此设计方案是可行的。
By using Scott transformer, the power system of 380V three-phase without neutral point can be transformed into 220 V two-phase power system. Three-phase power factor correction can be realized by using single phase power factor correction. The IC-IR1150 with the one-cycle control technique is used for active power factor correction. The stabilization of output voltage and current sharing can be implemented by control chips UC3844 and UC3907. The experimental results demonstrate its validity.
出处
《船电技术》
2012年第6期48-50,53,共4页
Marine Electric & Electronic Engineering
关键词
三相功率因数校正
Scott变压器
均流
three-phase power factor correction
Scott transformer
current sharing
