A control method for the single-phase three-leg unified power quality conditioner without a phase-locked loop

被引：0

作者：

Feng, Depin ^{[1
]}

Chen, Tao ^{[1
]}

Zhang, Liang ^{[2
]}

Meng, Weiqi ^{[3
]}

He, Jinwei ^{[3
]}

机构：

[1] Linyi Power Supply Co, State Grid Shandong Elect Power Co, Linyi, Peoples R China

[2] Yinan Power Supply Co, State Grid Shandong Elect Power Co, Dept Radiol, Linyi, Peoples R China

[3] Tianjin Univ, Sch Elect & Informat Engn, Tianjin, Peoples R China

来源：

FRONTIERS IN ENERGY RESEARCH | 2024年 / 12卷

关键词：

unified power quality conditioner; phase-locked loop; voltage fluctuation; harmonic control; power quality; PERFORMANCE; SYSTEMS;

D O I：

10.3389/fenrg.2024.1343520

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The single-phase three-leg unified power quality conditioner (UPQC) can achieve the functions of voltage compensation, reactive power compensation, and harmonic compensation. However, traditional control algorithms require a phase-locked loop to obtain the real-time phase angle of the grid voltage, which undoubtedly increases algorithm complexity. To simplify the phase-locked calculation, this paper proposes a control method without the phase-locked loop for the single-phase three-leg UPQC. In the proposed scheme, the instantaneous value of the grid voltage is employed to realize the grid integration control. Then, the load voltage reference is calculated in real time using a second-order generalized integrator. Moreover, a simple algorithm for reactive power and harmonic compensation is discussed, further simplifying the control algorithm. Finally, a small-scale experimental platform is built, and the effectiveness of the proposed method is verified by the experimental results.

引用

页数：10

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