摘要本文首先介绍功率因数校正技术的发展历程，包括背景、现状及前景。然后分析 PFC 技术常用的拓扑结构，工作模式及控制策略。经过分析，本文采用 Boost 电路作为主电 路拓扑结构，且电路工作于电感电流连续模式，同时本文提出一种基于 DSP 芯片 MC56F8013 的平均电流方案的电压电流双闭环控制策略并分析其原理。 79711

接下来本文介绍硬件和软件电路的设计，硬件电路设计包括几个方面：主功率电路 器件的参数设计及器件选择、控制电路设计、硬件抗干扰措施设计，软件部分则包括主 程序设计、电路的软启动设计、中断服务子程序设计以及数字 PI 调节器设计。 

最后，利用 Saber 仿真软件对系统模型进行搭建，对之前的系统参数设计及控制原 理等进行验证，仿真结果显示输入电流跟随输入电压效果良好，且能够适应宽电压范围。 同时通过实验，对所设计的 PFC 电路进行调试验证，调试结果显示所设计的 PFC 电路在 输入电压波动的情况下，依然保证良好的功率因数校正效果，符合设计要求。 

毕业论文关键词 功率因数校正   数字化   平均电流控制   DSP

毕 业 设 计 说 明 书 外 文 摘 要

Title Active Power Factor Correction Based On DSP

Abstract This paper introduces the development process of power factor correction technology, including the background, current situation and prospects。 Then analyze topology commonly used in PFC techniques, operating modes and control strategies。 After analysis, we use Boost circuit as a main circuit topology, the circuit operates in continuous inductor current mode, while This paper presents a voltage and current double closed loop control strategy of average current program based on DSP chip MC56F8013 and analyze its principles。 

Next article describes the hardware and software, circuit design, hardware circuit design includes several aspects: the main power circuit design parameters of the device and device selection, control circuit design and anti-jamming hardware design, software design part includes the main program, the circuit soft start design，the interrupt service routine design and digital PI regulator design。 Finally, Saber simulation software on the system model is set up, use the system parameters to verify former design and control theory, the simulation results show that the input current follows the input voltage well, and can adapt to a wide voltage range。 At the same time, through practical experiment, debugging results show that the designed PFC circuit at the input voltage fluctuation case, can still ensure good power factor correction effect, which meets the design requirements。 

Keywords Power Factor Correction Digital Average Current Control DSP

目 次

1 引言 3

1。1 研究背景 3

1。2 PFC 技术的分类和发展历史 3

1。2。1 无源功率因数校正 3

1。2。2 有源功率因数校正 4

1。2。3 APFC 技术发展历史 4

1。3 数字化 PFC 技术的发展