毕业设计说明书中文摘要现代电力电子技术的产物的广泛运用，对于电网来说造成了严重的不可估量的谐波污染情况，这就使得功率因数的校正技术成为现代的电力电子学科研究的热点之一。自九十年代以来，功率因数校正技术取得了巨大的进展，提出了许多新颖而且效率极高的功率因数校正原理及拓扑结构的概念。不仅仅由本文的简单闭环控制电路还可以进行变占空比的，多个电感耦合的方法来进行优化。而这些技术也保证了电子电路的功率因数校正从而提高了安全和可靠。82688

本文对Boost 型功率因数校正技术进行分析设计和研究，详细分析了DCM Boost PFC 变换器的工作原理，研究闭环控制实现单相的功率因数校正的原理方法，最后运用仿真软件建立模型进行仿真验证。

在仿真中先进行无闭环的仿真，再进行闭环控制验证，同时在多个电压下进行原理验证和分析。最终总结这种定占空比DCM Boost控制的效能和优点并进行后续展望。并介绍了整流桥的工作原理。

毕业论文关键词  电感电流断续，Boost变换器，功率因数校正 

毕业设计说明书外文摘要

Title    Research On Discontinous Conduction Mode Boost PFC Converter                     

Abstract

The product is widely used in modern power electronics technology, for the power grid is causing serious harmonic pollution immeasurable, which makes power factor correction technology to become one of the hotspots of modern power electronics disciplinary research。 Since the nineties, power factor correction technology has made tremendous progress, the concept of many novel and highly efficient power factor correction principle and topology。Herein not only by a simple closed-loop control circuit can also be of variable duty cycle, a plurality of inductive coupling approach to optimization。 These technologies also ensures that the power factor correction electronic circuits to enhance the safety and reliability。

    On the basis of previous research on power factor correction, the Boost type power factor correction operating in discontinuous conduction mode (DCM) is analyzed and studied in this thesis, The working principle of DCM Boost PFC converter is analyzed in detail, and the steady state waveform of the circuit are analyzed。。 The model is built by the simulation software, and the single-phase DCM boost PFC is achieved by the closed-loop electronic control。

In the simulation, the closed-loop simulation is carried out first, then the closed-loop control verification is carried out, and the principle verification and analysis are carried out at the same time。 Finally summarizes the effectiveness and advantages of this fixed duty cycle Boost DCM control and carries on the follow-up prospects。And it introduces the principle of the rectifier bridge coupled inductor and development principles。

Keywords  Discontinous Conduction Mode, Boost Converter, power factor correction

目   次

摘要 Ⅰ

Abstract Ⅱ

1  引言（或绪论） 1

1。1  研究背景 1

1。1。1  Boost PFC变换器 2

1。1。2  电感电流断续模式 3

1。2  研究内容 3

2  DCM Boost PFC 变换器 4

2。1  DCM Boost PFC变换器的工作理 4

3    参数设计及仿真