无桥Boost PFC 在UPS 中的应用研究.pdf

无桥 Boost PFC 在 UPS 中的应用研究
A Research on the Application of Non-bridge Boost PFC in UPS
李贺龙,俞雁飞,陈小龙
哈尔滨工业大学电气工程及自动化学院
Li Helong, Yu Yanfei, chen Xiaolong, School of Electrical Engineering and Automation, Harbin
Institute of Technology
摘要:不间断电源(UPS)在生活和工业中应用十分广泛。传统 UPS 电源输入侧直接接在电网上,输入电流谐波含量高,网侧
输入功率因数很低,对电网造成污染。该文提出在 UPS 的输入侧加入功率因数校正环节,通过无桥 Boost PFC 对网侧电流
进行控制,使网侧电流跟踪电压相位,大大提高网侧输入的功率因数,几乎消除了对电网的谐波污染,达到清洁使用电能的
目的。本文详细分析了无桥 Boost PFC 电路的工作原理,通过 Matlab/Simulink 进行了系统的仿真,并进行了硬件实验,仿
真和实验结果验证了提出方法的正确性和可行性。
关键字:升压功率因数校正双闭环不间断电源
abstract: Uninterrupted Power Supply(UPS) is widely used in industry and life. Traditional UPS is directly connected to the grid.
The harmonic content of in-current is very high. The power factor of the grid side is quit low. So it is an pollution to the grid. This
article proposes an idea that increasing the power factor correction part to the input side of the UPS. Make the grid current phase
following the voltage phase through the Boost PFC of free bridge. Greatly increase the PF of the grid side and almost dismiss the
harmonic pollution to the grid. Realize the purpose of clean using power. This paper detailed analyzes the principle of the PFC circuit.
Make simulation of the system. The simulation and experiment results verify the correction and feasibility of the proposed method.
keywords: Boost, PFC, Double loop, UPS
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