摘要
本文在论述功率因数校正基本原理的基础上,着重分析了目前常见的Boost型功率因
数校正电路所存在的问题,探讨了PFC主功率电路的几种改进型拓扑以及软开关功率变换
技术在功率因数校正电路中的应用,研制了平均电流型中功率零电压转换功率因数校正电
路,并对其进行了理论分析,给出了整个系统的设计过程及实验结果。最后,作为对非线
性电路仿真的一种尝试,探讨了离散时域法和符号分析法在PFC电路仿真中的应用。
This thesis first introduces the principle of active power factor correction, and analyses the
Boost converter抯 deficiency. The power stage topologies and application of soft-switching
techniques in APFC are discussed in detail. The principle of operation, the theoretical analysis,
design procedure. and experimental results from a laboratory prototype rated at 1.5Kw with
400VDC output voltage are presented. At last, application of Discrete-Time methods and
symbolic analysis methods in PFC circuits are discussed.
引文
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