Title The research and design of three-phrase power factor correction circuitry
Abstract
With the development of society, the switching power supply, particularly the three-phrase high-power switching power supply, is widely used in the appliances. However the nolinear components lead to the distortion in the incoming current, as a result, it pollute the current in power grid. The power factor correction could reduce the harmonic wave and improve the power factor of the circuitry.
In this paper, the three-phrase power factor correction is discussed, including the structure,the control type and the improvement. The one-phrase and three-phrase power factor correction circuitry based on Boost converter are analysed in detail, then, modeled and simulated by Matlab/Simulink with different types of control. The result of simulation meets the theoretical analysis. Finally, the improved methods such as parallel interleaving and harmonic injection are introduced.
Keywords power factor correction, Discontinuous Current Mode,
Boost converter, parallel interleaving technology
目次
1 绪论 1
1.1 功率因数校正技术的研究背景 1
1.2 功率因数校正技术的发展历史与分类 2
1.3 本文研究的主要内容 4
1.4 本章小结 4
2 功率因数校正技术概述 4
2.1 功率因数的定义 4
2.2 功率因数与谐波污染的关系 6
2.3 有源功率因数校正技术的实现 7
2.4本章小结 11
3 三相功率因数校正电路的研究 11
3.1 三相功率因数校正技术概述 11
3.2 三相功率因数校正电路的实现 15
3.3 功率因数校正电路的控制 20
3.4 本章小结 28
4 三相功率因数校正电路的完善 28
4.1 三相功率因数校正电路的调整方向 28
4.2 交错并联技术 29
4.3 谐波注入技术 32
4.4 本章小结 33
结论 34
致谢 36
参考文献 37
1 绪论
1.1 功率因数校正技术的研究背景
随着电力电子技术日新月异的发展以及社会的需要,基于脉宽调制(PWM)控制的开关电源等各种变流装置已经广泛应用于电气设备之中,电力电子装置如开关电源得以广泛应用,使得体积小、功率密度大、效率高的直流电源得以实现。