雙環控制策略的有源功率因數校正電源研究

摘要：基于電流和電壓的雙環控制策略，研制了一臺輸出功率300W的功率因數校正電源樣機。功率因數校正級和DC/DC變換級分別采用平均電流控制和峰值電流控制方法。文中詳細討論了該樣機的工作原理和設計過程，給出了電流內環和電壓外環補償網絡的設計過程。試驗結果表明，所設計的樣機控制電路簡單，運行可靠，性能基本達到設計指標。 敘詞：功率因數校正；雙環控制；電源 Abstract：A 300W experimental prototype of power supply with power-factor-correction function based on dual-loop control strategy is presented in this paper. The power-factor-correction circuit and the DC/DC converter are realized by average-current control and peak-current control, respectively. In this paper, the principlethe design processthe compensation network of current-loop and voltage loop of the experimental prototype are discussed in detail. Experimental results verify that the control circuit of the power supply is simple, the operation is reliable and it also meets the performance demands. Keyword：power factor correction; dual-loop control; power supply;