A Model Predictive Control Method for Bidirectional Interfacing Converters in Hybrid AC/DC Microgrids

被引：1
|
作者：
Guo C. [1 ]
Zhang A. [1 ]
Zhang H. [2 ]
Ren Z. [1 ]
Zhang L. [3 ]
机构：
[1] School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an
[2] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an
[3] School of Electronics and Information, Xi'an Polytechnic University, Xi'an
来源：
Zhang, Hang | 2018年 / Xi'an Jiaotong University卷 / 52期
关键词：
Bidirectional converter; Hybrid AC/DC microgrid; Model predictive control; Three-phase unbalance;
D O I：
10.7652/xjtuxb201812006
中图分类号：
学科分类号：
摘要：
A model predictive control strategy is proposed to solve the inevitable DC voltage oscillation, inaccuracy phase information of positive voltage, unclear calculation of the active and reactive power of the bidirectional interfacing converters in three-phase unbalanced condition. Firstly, an instantaneous power vector predictive model is built by using instantaneous voltage and current vector to omit the phase-lock-loop and to avoid the effect of inaccurate voltage phase detection; Secondly, power references are designed for the real and imaginary components of the power vector, respectively, to restrain the double-frequency power caused by the negative sequence component and to eliminate the DC voltage oscillation; Finally, objective functions are designed for the real and the imaginary components of power vector, respectively, to avoid the interaction between them, and a switching frequency limitation part is included in objective functions to make the switching frequency tunable. Simulation and experimental results show that the active power is not influenced by the change of reactive power. A comparison with the traditional PWM method shows that the proposed method reduces the overshoot of active power by about 74%, the power factor is regulated to 1, and the DC voltage oscillation is eliminated. © 2018, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：38 / 43and105
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