RESEARCH ON ENERGY COOPERATIVE CONTROL OF MMC BASED ON MULTI-OBJECTIVE RECURSIVE MODEL PREDICTION THEORY

Xia Xiangyang; Xu Lei; Yi Haigan; Chen Kaiping; Jing Huabing; Liu Fangping

doi:10.19912/j.0254-0096.tynxb.2021-0498

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (10) : 472-481. DOI: 10.19912/j.0254-0096.tynxb.2021-0498

RESEARCH ON ENERGY COOPERATIVE CONTROL OF MMC BASED ON MULTI-OBJECTIVE RECURSIVE MODEL PREDICTION THEORY

Xia Xiangyang¹, Xu Lei¹, Yi Haigan¹, Chen Kaiping¹, Jing Huabing², Liu Fangping²

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Abstract

The high-voltage direct current transmission system based on modular multilevel converters has a broad development prospect. In view of the defects of conventional control methods such as complex control and difficult control of converter internal energy under unbalanced network voltage, a cooperative control strategy of modular multilevel converter energy based on multi-objective recursive model prediction theory is proposed. By optimizing the control of arm current, the coordinated control on the AC side and the internal energy balance of the converter are realized. In order to simplify the control complexity, this paper optimizes the predictive control in traditional model, establishs the corresponding predictive model and objective function, and divides the control objectives into hierarchical control of internal and external characteristics. Basically, the optimal solution of external characteristics control and the results of internal characteristics analysis are introduced to optimize the range of internal characteristics control. Finally, the results of simulation and experiment verify that the proposed control strategy is able to quickly realize the safe and stable operation of the converter under normal and unbalanced AC side conditions.

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Xia Xiangyang, Xu Lei, Yi Haigan, Chen Kaiping, Jing Huabing, Liu Fangping. RESEARCH ON ENERGY COOPERATIVE CONTROL OF MMC BASED ON MULTI-OBJECTIVE RECURSIVE MODEL PREDICTION THEORY[J]. Acta Energiae Solaris Sinica. 2022, 43(10): 472-481 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0498

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