摘 要开关电源是实现电能转换和功率传递的重要设备。近年来,随着电力电子技术的快速进展,开关电源因其效率高、性能好、成本低而被广泛应用于国民经济的各个领域,并取得了显著的效益。因此讨论设计一款性能稳定、可靠性高的开关电源具有极高的科研意义和商业价值[1]。本文对 Boost 型功率因数校正技术进行了分析、设计和讨论。详细分析了有源功率因数校正器的基本工作原理,通过比较几种不同拓扑的 PFC 变换器主电路的优缺点,和比较控制电路的几种不同控制方法的优缺点,明确本文所要讨论的对象为平均电流控制(ACM)的 Boost 型功率因数校正器。在此基础上对 Boost 主电路和控制电路进行数学建模,得出其状态方程和传递函数,运用仿真软件 MATLAB 中的 Simulink 工具,建立了 Boost 主电路和控制电路的 Simulink 仿真模型,并得出其仿真结果。本文根据 Boost 变换器的特点和要求,设计了一个具体、有用的带 PFC 功能的开关电源电路,并给出了具体设计步骤和电路参数的计算。平均电流控制的单相 Boost 功率因数校正电路,完全能够达到整流、高输入功率因数、升压、稳压、低纹波的目标,具有宽阔的应用前景。关键词:功率因数校正;Boost 变换器;仿真AbstractSwiching power supply is an important to achieve Power conversion And Power delivery. In reeent years , Swiching power supply is widely used in variouse field of national economy with the development of power electronice technology,and achieveing remarkable result,because of its high effieieney,good performance and low cost.So designing a kind of Switching Power supply with steady Performance and high reliability has high seientific and commercial values.Based on the summary of the fruits of the research of the Active Power Factor Correction, the PFC system, which adopts Boost power converter circuit and Average Current Mode control scheme, is well studied in this thesis.According to the principle and the discussion of the single-phase active power correction, concluding different structures of the main circuit and methods of the controllers, the...