Saber有源储能电感变换器及其在PFC变换器中的应用研究

菜单

摘要针对单级PFC变换器中用于平衡输入、输出功率的储能电容有着体积大、寿命短等缺点，本文尝试在PFC变换器中使用有源储能电感替代电解电容。研究在简要介绍单级PFC变换器等背景后，对传统PFC变换器应用对偶原理，得出工作在不连续电容电压模式下的对偶 PFC变换器。但由于实际条件的限制，对偶PFC变换器的功率因数校正性质可能受到影响。本文详细分析并解决了这个问题，并对一种典型的对偶PFC变换器做出理论推导，得出其平均值模型和稳态方程。最后，本文基于Saber 仿真平台对此电路进行模拟仿真，对由储能电感平衡功率的对偶PFC变换器的功率因数校正能力进行了验证，从而证明了储能电感在这此方面的广阔的应用前景。67248

毕业论文关键词电感储能对偶原理 PFC变换器不连续电容电压模式

毕业设计说明书（论文）外文摘要

Title Active energy storage inductor and study of its application in PFC converter

Abstract

In the light of shortcomings such as Large volume, short service life of storage capacitor ,which is applied to buffer the difference between the input and output power in single stage PFC regulator ,This paper attempts to replace the electrolytic capacitor with the active storage inductor. After the introduction of single stage PFC regulator, duality principle is applied to conventional PFC converters, educing the dual PFC converters operating in discontinuous capacitor voltage mode (DCVM). Its power-factor-correcting capability may be affected by some restricts in practical conditions. This paper analyses and solves this problem in detail, and derives the averaged model and steady-state design equations of a kind of dual PFC regulators by theoretical analysis .Finally ,simulation of such circuit is performed based on the Saber software to confirm its PFC capability ，and broad application prospect of storage inductor in this aspect.

Keywords inductive storage duality principle PFC converter discontinuous capacitor voltage mode

1 引言 1

2有源储能电感介绍 1

2.1电感储能的基本原理 1

2.2储能电感的发展与应用前景 2

3 功率因数校正（PFC）技术 3

3.1 PFC技术简介 3

3.2 单级PFC变换器 7

3.3 功率平衡电容的储能分析 11

4 对偶原理在PFC电路中的应用 15

4.1 对偶原理及基本对偶PFC电路 15

4.2 对偶变换时所应注意的一些实际问题 17

4.3 基于对偶原理的新型单级PFC变换器 20

5 基于Saber的Dual PFC电路的仿真模拟 24

5.1 仿真电路整体介绍 24

5.2 仿真波形与结果分析 25

结论 31

致谢 32

参考文献 33

1 引言

由于开关电源的广泛应用，电网侧输入功率降低、及谐波污染日益严重。为保持电网供电质量，为减小开关电源等电力电子装置对电网的谐波污染，以保证电网供电质量，提高电网的可靠性，同时也为提高开关电源输入端功率因数，达到节能效果，必须限制开关电源等电力电子装置所带来的电流谐波，因此功率因数校正（Power factor correction, PFC）变换器得到了越来越广泛的应用。