摘要对电解电容器及功率因数校正电路做了较详细的研究分析。以BOOST(升压)型PFC电路为基础,采用MATLAB/SIMULINK仿真软件对其做仿真分析。针对PFC电路的电解电容器参数监测研究,提出了在线测算分析电容器重要参数(电容量及等效串联电阻)的方法。 65574
采用理论分析和仿真分析相结合的方法,对所需解决问题进行了讨论。在对电解电容器特性及PFC电路有了研究基础的前提下,确定选用升压型PFC拓扑,采用滞环电流控制策略,构建SIMULINK仿真模型。根据所提出的电解电容器参数测算方案(频域分析法),结合仿真实验,成功验证了方案的可行性与正确性。
毕业论文关键词 电解电容器 功率因数校正 BOOST PFC MATLAB/SIMULINK 频域分析法
毕业设计说明书(论文)外文摘要
Title Research on PFC circuit in the electrolytic capacitor parameter monitoring
Abstract
To do a more detailed analysis of electrolytic capacitors and power factor correction circuit. BOOST PFC circuit based on its simulation analysis using MATLAB/SIMULINK simulation software.Aiming at Electrolytic capacitor for PFC circuit parameter monitoring, proposed the online calculation method of analysis capacitor important parameters (capacitance and equivalent series resistance).
By using the method of theoretical analysis and Simulation of combining, needed to solve the problem are discussed. Research based on the premise of the electrolytic capacitor's characteristics and the PFC circuit to determine the choice of the boost PFC topology, hysteresis current control strategy to build a Simulink simulation model. According to the proposed electrolytic capacitor parameter estimation program (frequency domain analysis), combined with simulation experiment,successfully verified the feasibility and correctness of the program.
Keywords Electrolytic capacitors power factor correction BOOST PFC MATLAB/SIMULINK frequency domain analysis method
目 次
1 绪论 1
1.1 研究背景与意义 1
1.2 本文主要工作 2
2 电解电容器 3
2.1 电容器的定义 3
2.2 铝电解电容的基本知识 4
2.3 铝电解电容的基本参数 6
2.4 铝电解电容的特性分析 9
2.5 铝电解电容的寿命 14
2.6 小结(电解电容器参数监测对其寿命预测的意义) 17
3 PFC电路 18
3.1 PFC技术简介 18
3.2 基于Boost电路的PFC变换电路 21
3.3 PFC变换电路的控制策略 26
3.4 小结(PFC技术的意义) 30
4 PFC电路中电解电容的参数测算 31
4.1 电解电容器参数测算分析 31
4.2 Boost型PFC变换电路仿真分析 33
4.3 电容器参数测算验证分析 36