MMC circulating current suppression strategy based on improved quasi-PR control

Guangjie Fu; Zhiwei Lu

doi:10.54097/fcis.v3i2.6911

Authors

Guangjie Fu
Zhiwei Lu

DOI:

https://doi.org/10.54097/fcis.v3i2.6911

Keywords:

MMC circulating current suppression strategy, Improved quasi-PR control

Abstract

The internal circulation of modularized multilevel converter will affect waveform quality and increase system loss. In this paper, the basic principle and topological structure of MMC as well as the causes of the internal circulation are briefly analyzed. A method of harmonic component extraction based on the second-order generalized integrator and the suppression strategy of MMC circulation based on feedforward compensation quasi-proportional resonant control are proposed. The feasibility of this strategy is verified in MATLAB/Simulink, and the simulation results show that the circulation and capacitor voltage fluctuation are controlled within a reasonable range.

Downloads

Download data is not yet available.

References

LV Jing, CAI Xu, ZHANG Zhankui, Chi Yongning. Impedance Modeling and Stability Analysis of offshore Wind Farm Grid-connected by MMC-HVDC [J]. Proceedings of the CSEE,2016,36(14):3771-3781.

NAMI A., Liang J., Dijkhuizen F. et al. Modular Multilevel Converters for HVDC Applications: Review on Converter Cells and Functionalities[J]. IEEE Transactions on Power Electronics, 2015, 30(1): 18-36.

XU Zheng, Xue Yinglin, Zhang Zheren. Key Technologies and Prospects of High-capacity Overhead Flexible DC Transmission [J]. Proceedings of the CSEE,2014,34(29):5051-5062.

MA Weimin, Wu Fangjie, Yang Yiming, Zhang Tao. Current Situation and Application Prospect Analysis of Flexible DC Transmission Technology [J]. High Voltage Technology,2014,40(08):2429-2439.

TANG Guangfu, He Zhiyuan, Pang Hui. Research, Application and development of Flexible DC transmission Engineering Technology [J]. Automation of Electric Power Systems,2013,37(15):3-14.

LIN Qiang. Study on Harmonic Analysis and Control Strategy of Flexible DC Transmission MMC [D]. Shenyang University of Technology,2021.

Information on http://www.weld.labs.gov.cn TU Qingrui, Xu Zheng, Guan Minyuan, Zheng Xiang, Zhang Jing. Design of Modularized Multilevel Converter Circulation Suppression Controller [J]. Automation of Electric Power Systems,2010,34(18):57-61+83.

XIE Peiwei, Yang Cong. A strategy for suppressing MMC Circulation based on proportional resonance (PR) control [J]. Journal of Ship Electric Technology,2019,39(02):41-44.

LIU Zhouzhou, forward together. Control and Circulation Suppression Strategy of MMC-HVDC Based on Quasi-PR Controller [J]. Journal of Electric Power Systems and Automation,2016,28(11):70-75.

TU Qingrui, Xu Zheng, Zheng Xiang, Guan Minyuan. Internal Circulation Mechanism Analysis of Modular Multilevel Converter DC Transmission [J]. High Voltage Technology,2010,36(02):547-552.

ZHOU Juan, Zhang Yong, Geng Yiwen, Wu Xiaojie. Improved PR Control of Four-bridge active Power Filter in Static Coordinate System [J]. Proceedings of the CSEE,2012,32(06):113-120.