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分析了基于Ｚｅｔａ变换器的功率因子校正（ＰＦＣ）电路；研究了工作在不连续导电模式的Ｚｅｔａ变换器实现功率因子校正的机理；推导出了保证电路实现功率因子接近１的临界电感值。ＳＰＩＣＥ仿真和实验结果都证明了理论分析是正确的，为设计功率因子校正的Ｚｅｔａ变换器提供了理论依据。
The power factor correction (PFC) circuit based on Zeta converter is analyzed. The mechanism of power factor correction in Zeta converter operating in discontinuous conduction mode is studied. The critical inductance value of the circuit with power factor close to 1 is deduced. Both SPICE simulation and experimental results show that the theoretical analysis is correct and provide a theoretical basis for the design of power factor correction Zeta converter.