【作者】 陈彬；

【导师】 刘庆想；

【作者基本信息】 西南交通大学 ， 电力系统及其自动化， 2009， 硕士

【摘要】 整流装置中的大量谐波导致的功率因数降低和电网污染,已引起世界各国的高度重视。功率因数校正技术是抑制谐波电流、提高功率因数的行之有效的方法。因此近年来受到了越来越多的关注。到目前为止,对于15kW以下的大功率充电电源,有个别采用有源功率因数校正技术,而更多更高功率的充电电源,考虑到可靠性高和应用简便,主要还是采用无源功率因数校正技术。本文阐述了大功率充电电源中功率因数校正的目的和意义,以及其国内外研究现状,对有源功率因数校正技术做了简单介绍。然后结合大容量电容充电电源的工作特性,对未校正的电容滤波型三相桥式整流电路的功率因数和谐波进行分析,然后在对以往的功率因数校正技术调研基础上,对传统的前置和后置式校正电路设计方法做系统的分析,给出具体的设计方法和参数选择,校正后的功率因数最高达到0.96;并给出功率因数和各次谐波含量与无源功率因数校正电感之间的关系,同时完成在MATLAB/SIMULINK中的功率因数的仿真测量模型的建立。最后结合我们所要设计的电源参数,完成了30kW大容量电容充电电源的无源功率因数校正电路的设计,在保证校正电感体积的条件下将功率因数提高到0.9。并对某车载5kW充电电源进行无源功率因数校正和初步有源功率因数校正设计,在保证校正电感体积和温升条件下经无源功率功率因数校正后功率因数提高到0.85以上。最后进行仿真实验验证。更多还原

【Abstract】 Lower power factor and power grids’ pollution caused by the substantial harmonic in the rectifier devices that have attracted great attention around the world. Power Factor Correction technology is an effective way to the suppression of harmonic current and improve power factor. Thus it has attracted more and more attention in recent years. So far, for the following high-power 15kW power charge, some use of active power factor correction technology, but taking into the reliability and simple application, more higher-power rechargeable power supply use the passive power factor correction technology.This paper presents the purpose and significance of power factor correction in the high-power charging power supply, as well as its domestic and international research status, and does a simple introduction on the active power factor correction technology. Then combined with the operating characteristics of large-capacity capacitor charging power supply, analyzed the uncorrected power factor and harmonic of capacitor-filtered three-phase-bridge rectifier circuitsAnd then based on ’the past investigation of the power factor correction techniques, systematic analyzed the traditional front and rear-correction circuit design method, given the specific design methods and parameters, and the power factor could corrected up to 0.96;Also given the relationship between the passive power factor correction inductance and power factor and harmonic content, and establish the simulation measurement model of power factor at the same time in the MATLAB/SMULINK.Finally, combination the power parameters we have to design, completed the design of a suitable 30kW large-capacity capacitor charging power supply of the passive power factor correction circuit. Under the premise of the correct size inductor, power factor will be increased to 0.9. And a 5kW power for passive power factor correction and preliminary design of active power factor correction, ensure the inductance volume and temperature rise conditions, after the passive power factor correction , the power factor improved to more than 0.85. Finally, do simulation and experimental verification.更多还原