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A double closed loop APFC control with feed-forward

YAN Wen-hua1, WANG Xiao-peng1, YU Peng-fei2

 

(1. School of Electronics & Information Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;2. School of Mechanical Electronic & Control Engineering, Beijing Jiaotong University, Beijing 100044, China)

 

Abstract: In order to improve the steady state performance, dynamic response and power factor of traditional power factor correction (PFC) digital control method and reduce the harmonic distortion of input current, a double closed loop active power factor correction (APFC) control method with feed-forward is proposed. Firstly, the small signal model of Boost PFC control system is built and the system transfer function is deduced,  and then the parameters of the main device with Boost topology is estimated.  By means of the feed-forward, the system can quickly respond to the change in input voltage. Furthermore, the use of voltage loop and current loop can achieve input current and output voltage regulation.  Simulink modeling shows that this method can effectively control the output voltage in case of input voltage largely fluctuating, improve the system dynamic response ability and input power factor, and reduce the input current harmonic distortion.

 

Key words: active power factor correction; feed-forward; double closed loop control; transfer function

 

CLD number: TM464  Document code: A

 

Article ID: 1674-8042(2017)03-0264-07   doi: 10.3969/j.issn.1674-80422017-03-009

 


References

 

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一种带前馈的双闭环APFC控制方法

 

闫文华1, 王小鹏1, 鱼鹏飞2

 

(1. 兰州交通大学 电子与信息工程学院, 甘肃 兰州 730070; 2. 北京交通大学 机械与电子控制工程学院, 北京 100044)

 

摘要: 为了提高传统功率因数校正(PFC)数字控制的稳态性能、 动态响应和功率因数, 降低输入电流谐波畸变, 提出了一种带前馈的双闭环有源功率因数校正(APFC)控制方法。 首先, 建立了Boost PFC控制系统的小信号模型, 推导出了系统传递函数; 然后, 估算出了Boost拓扑结构主要器件的参数值。 通过前馈的作用, 系统可以快速响应调整输入电压的变化, 利用电压环和电流环实现对输入电流和输出电压的调节。 Simulink 建模仿真表明: 该方法能够在输入电压波动较大的情况下有效地稳定控制输出电压, 提高系统的动态响应能力和输入功率因数, 减小输入电流谐波畸变。

 

关键词: 有源功率因数校正; 前馈; 双闭环控制; 传递函数

 

引用格式:YAN Wen-hua, WANG Xiao-peng, YU Peng-fei. A double closed loop APFC control with feed-forward. Journal of Measurement Science and Instrumentation, 2017, 8(3): 264-270. [doi: 10.3969/j.issn.1674-8042.2017-03-09]

 

 

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