改进下垂控制在三相三电平PWM整流器中的应用

王聪聪; 肖伸平

doi:10.16513/j.cnki.10-1427/tk.2017.05.004

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分布式能源 ›› 2017, Vol. 2 ›› Issue (5) : 24-29. DOI: 10.16513/j.cnki.10-1427/tk.2017.05.004

学术研究

改进下垂控制在三相三电平PWM整流器中的应用

王聪聪 ,
肖伸平

作者信息 +

Application of Improved Droop Control in Three-Phase Three-Level PWM Rectifier

Author information +

文章历史 +

摘要

针对三相三电平脉宽调制（pulse-width modulation，PWM）整流器的中点平衡问题，提出一种改进的下垂控制策略。首先，基于空间矢量控制，分析三相三电平PWM整流器的主电路拓扑结构，并建立数学模型；其次，对反馈电压电流进行dq解耦，并引入一个下垂系数对反馈电压进行修正，从而提高输出电压的跟踪性能，并实现快速单位功率因数控制及快速瞬间响应。最后，通过Matlab/Simulink仿真分析，验证了该控制策略具有较好的动态性能及静态性能。

Abstract

According to the neutral-point balance problem of three-phase three-level pulse-width modulation （PWM） rectifier, this paper proposes a improved droop control. Firstly, based on the space vector control, we analyze the main circuit topology of the three-phase three-level PWM rectifier and establish its mathematical model. Then, we realize the dq decoupling of feedback voltage and current, and introduce a droop coefficient to correct the feedback voltage；so then, the tracking performance of the output voltage is improved, and fast unit power factor control and fast transient response are achieved. Finally, through Matlab/Simulink simulation, it is proved that the control strategy has good dynamic performance and static performance.

导出引用

王聪聪, 肖伸平. 改进下垂控制在三相三电平PWM整流器中的应用[J]. 分布式能源. 2017, 2(5): 24-29 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.05.004

Congcong WANG, Shenping XIAO. Application of Improved Droop Control in Three-Phase Three-Level PWM Rectifier[J]. Distributed Energy Resources. 2017, 2(5): 24-29 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.05.004

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