摘要
介绍了三相四线制三电平电能质量综合补偿装置的拓扑,并分析了其等效电路及数学模型。分析了采样误差对电流控制精度的影响,提出了适用于三相四线制三电平电能质量综合补偿装置的改进无差拍控制(DBC)算法。针对三电平电能质量综合补偿装置中点电位平衡问题,提出了一种对零序电流控制的中点电位主动平衡方法,该方法与DBC算法实现了无缝融合。通过实验验证了控制方法的可行性及控制效果。
The topology of three-phase four-wire three-level power quality compensation device is introduced.The influence of sampling error on the accuracy of current control is analyzed,and an improved deadbeat control(DBC) algorithm suitable for three-phase four-wire three-level power quality comprehensive compensation device is proposed.Aiming at the point potential balance problem in the three-level power quality comprehensive compensation device,a neutral point potential active balance method based on zero sequence current control is proposed,which integrates seamlessly with DBC algorithm.The feasibility and effectiveness of the control method are verified by experiments.
作者
王珺璨
桂在毅
张伟
张庆岩
WANG Jun-can;GUI Zai-yi;ZHANG Wei;ZHANG Qing-yan(Hefei University of Technology,Hefei 230009,China)
出处
《电力电子技术》
CSCD
北大核心
2020年第3期93-96,共4页
Power Electronics
关键词
补偿器
三相四线制
改进无差拍控制
compensator
three-phase four-wire
improved deadbeat control
