摘要
分析了BUCK变换器工作在不连续导通模式（DCM）时实现PFC的机理；推导出了保证高功率因子的临界电感值。这种电路可使功率因子校正的成本大大降低，而功率因子几乎为一。SPICE仿真的结果与理论符合得很好，本文的结论是设计BUCK型不连续导电模式功率因子校正电路的基础。
This paper analyzes the principle of Buck converter in discontinuous conduction mode(DCM) using for PFC and derives the boundary inductance that maintains high power factor. The PFC circuit can decarase the cost of PFC, while power factor can nearly be 1. SPICE sedation results are consistent with the theory.The conclusions presented in this paper is the fundation of designing the Buck PFC circuit in DCM.
出处
《电气传动自动化》
1998年第4期68-71,共4页
Electric Drive Automation
关键词
变换器
功率因数
校正
PFC
电网
仿真
converter Power factor correction Boundary conditions Conduction mode
