基于SOGI的MMC环流抑制策略研究

doi:10.16180/j.cnki.issn1007-7820.2023.07.003

Abstract

Abstract:

MMC is widely used in high-voltage DC transmission applications due to its highly symmetrical sub-module cascade structure and good output waveform quality. The presence of MMC circulating current will aggravate the bridge arm loss, distort the bridge arm current and generate high harmonic components, which will seriously damage the power quality. In view of this problem, this study adopts the method of extracting the AC component of the circulating current by a multi-harmonic filter based on the interplay of SOGI and DC integrator and suppressing the circulating current by a new circulating current suppressor composed of three quasi-PR controllers connected in parallel. An 11-level MMC inverter simulation model is established on MATLAB/Simulink platform, and the simulation results show that the proposed control strategy can effectively complete the control of the system. Compared with the traditional circulating current suppression method, the circulating current suppression effect of the proposed method is more obvious, and the capacitor voltage fluctuation range is reduced by about 60%, which verifies the correctness and effectiveness of the proposed control circulating current control strategy.

Key words: modular multi-level converter, SOGI, quasi PR controller, pressure equalization control, circulating current suppression, carrier phase shift, MATLAB/Simulink, power balance

CLC Number:

TN99

WEI Shenghui,HAO Zhenghang,CHEN Zhuo. Research on MMC Circulation Suppression Strategy Based on SOGI[J].Electronic Science and Technology, 2023, 36(7): 16-23.

Figures/Tables 15

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Table 1.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

References 21

[1]	汤广福, 贺之渊, 滕乐天, 等. 电压源换流器高压直流输电技术最新研究进展[J]. 电网技术, 2008, 32(22):39-44.
	Tang Guangfu, He Zhiyuan, Teng Letian, et al. New progress on HVDC technology based on voltage source converter[J]. Power System Technology, 2008, 32(22):39-44.
[2]	杨晓峰, 林智钦, 郑琼林, 等. 模块组合多电平变换器的研究综述[J]. 中国电机工程学报, 2013, 33(6):1-14.
	Yang Xiaofeng, Lin Zhiqin, Zheng Qionglin, et al. A review of modular multilevel converters[J]. Proceedings of the CSEE, 2013, 33(6):1-14.
[3]	李戈琪, 庞磊, 孙玮, 等. 采用正负半桥子模块级联拓扑的高压多电平波形发生器[J]. 电网技术, 2018, 42(11):3820-3826.
	Li Geqi, Pang Lei, Sun Wei, et al. A high-voltage multilevel waveform generator with cascaded topology of positive and negative half bridge submodules[J]. Power System Technology, 2018, 42(11):3820-3826.
[4]	Kouro S, Malinowski M, Gopakumar K, et al. Recent advances and industrial applications of multilevel converters[J]. IEEE Transactions on Industrial Electronics, 2010, 57(8):2553-2580. doi: 10.1109/TIE.2010.2049719
[5]	王振浩, 计勍, 孙银锋, 等. 交流系统电压对MMC-HVDC接地故障时换流器闭锁前桥臂电流的影响机理[J]. 电力系统保护与控制, 2020, 48(13):22-30.
	Wang Zhenhao, Ji Qing, Sun Yinfeng, et al. Influence of AC system voltage on the current of the arm of the converter during an MMC-HVDC grounding fault before converter latching[J]. Power System Protection and Control, 2020, 48(13):22-30.
[6]	张建坡, 蒋畅, 田新成. 模块化多电平换流器子模块拓扑设计及其控制[J]. 电力自动化设备, 2019, 39(7):78-83.
	Zhang Jianpo, Jiang Chang, Tian Xincheng. Design of sub module topologies and their control for modular multilevel converter[J]. Electric Power Automation Equipment, 2019, 39(7):78-83.
[7]	许建中, 李钰, 陆锋, 等. 降低MMC子模块电容电压纹波幅值的方法综述[J]. 中国电机工程学报, 2019, 39(2):571-584.
	Xu Jianzhong, Li Yu, Lu Feng, et al. A review of suppression methods for sub-module capacitor voltage ripple amplitudes in modular multilevel converters[J]. Proceedings of the CSEE, 2019, 39(2):571-584.
[8]	康保林, 高亮, 屈子程. 基于MMC的直流电网故障分析和保护方案研究[J]. 电测与仪表, 2020, 57(13):130-136.
	Kang Baolin, Gao Liang, Qu Zicheng. Research on DC faults analysis and protection scheme of DC power grid based on MMC[J]. Electrial Measurement & Instrumentation, 2020, 57(13):130-136.
[9]	Yao Z, Zhang Q, Chen P, et al. Research on fault diagnosis for MMC-HVDC systems[J]. Protection and Control of Modern Power Systems, 2016, 1(8):1-7. doi: 10.1186/s41601-016-0016-y
[10]	Antonopoulos A, Angquist L, Nee H P. On dynamics and voltage control of the modular multilevel converter[C].Barcelona: Proceedings of the Thirteenth European Conference on Power Electronics and Applications, 2009:1-10.
[11]	屠卿瑞, 徐政, 管敏渊, 等. 模块化多电平换流器环流抑制控制器设计[J]. 电力系统自动化, 2010, 34(18):57-61.
	Tu Qingrui, Xu Zheng, Guan Minyuan, et al. Design of circulating current suppressing controllers for modular multilevel converter[J]. Automation of Electric Power Systems, 2010, 34(18):57-61.
[12]	姚骏, 赵磊, 谭义, 等. 适用于模块化多电平换流器的环流抑制策略[J]. 电网技术, 2016, 40(9):2764-2771.
	Yao Jun, Zhao Lei, Tan Yi, et al. Circulating currents suppressing strategy for modular multilevel converter[J]. Power System Technology, 2016, 40(9):2764-2771.
[13]	班明飞, 申科, 王建赜, 等. 基于准比例谐振控制的MMC新型环流抑制器[J]. 电力系统自动化, 2014, 38(11):85-129.
	Ban Mingfei, Shen Ke, Wang Jianze, et al. A novel circulating current suppressor for modular multilevel converters based on quasi-proportional-resonant control[J]. Automation of Electric Power Systems, 2014, 38(11):85-129.
[14]	孙悦, 曾国辉, 黄勃. 基于混合调制的模块化多电平换流器环流抑制策略[J]. 电子科技, 2021, 34(10):45-50.
	Sun Yue, Zeng Guohui, Huang Bo. Circulation suppression strategy of MMC based on hybrid modulation[J]. Electronic Science and Technology, 2021, 34(10):45-50.
[15]	武健, 刘瑜超, 徐修林, 等. 基于双坐标系复合控制的模块化多电平换流器环流抑制方法[J]. 电力系统自动化, 2015, 39(11):166-172.
	Wu Jian, Liu Yuchao, Xu Xiulin, et al. A circulating currents suppression method based on double coordinate compound control for modular multilevel converters[J]. Automation of Electric Power Systems, 2015, 39(11):166-172.
[16]	张芳, 张光耀, 陈堃. 基于线性自抗扰控制的MMC环流抑制策略[J]. 电力系统及其自动化学报, 2018, 30(2):71-78.
	Zhang Fang, Zhang Guangyao, Chen Kun. Circulating current suppressing strategy for modular multilevel converter based on linear active disturbance rejection control[J]. Proceedings of the CSU-EPSA, 2018, 30(2):71-78.
[17]	年珩, 沈永波, 宋亦鹏. 不平衡及谐波电网电压下并网逆变器的直接功率控制策略[J]. 电网技术, 2014, 38(6):1452-1458.
	Nian Heng, Shen Yongbo, Song Yipeng. Direct power control strategy of grid connected inverter under unbalanced and harmonic grid voltage[J]. Power System Technology, 2014, 38(6):1452-1458.
[18]	辛振, 赵仁德, 陈晨, 等. 基于双二阶广义积分器-锁频环的异步电机同步角频率估计方法[J]. 中国电机工程学报, 2014, 34(27):4676-4682.
	Xin Zhen, Zhao Rende, Chen Chen, et al. New induction motor synchronous angular frequency estimation method based on dual second order generalized integrator- frequency locked loop[J]. Proceedings of the CSEE, 2014, 34(27):4676-4682.
[19]	屈克庆, 李文旗, 赵晋斌, 等. 基于二阶广义积分器的非理想电网同步技术[J]. 电力电子技术, 2017, 51(1):72-77.
	Qu Keqing, Li Wenqi, Zhao Jinbin, et al. Grid synchronization technique based on SOGI under non-ideal grid[J]. Power Electronics, 2017, 51(1):72-77.
[20]	Zhao C Y, Xu J Z, Li T. DC faults ride-through capability analysis of full-bridge MMC-MTDC system[J]. Science China Technological Sciences, 2013, 56(1):253-261. doi: 10.1007/s11431-012-5043-y
[21]	Osku Ee M, Karimi M, Ravadanegh S N, et al. An innovative scheme of symmetric multilevel voltage source inverter with lower number of circuit devices[J]. IEEE Transactions on Industrial Electronics, 2015, 62(11):6965-6973. doi: 10.1109/TIE.2015.2438059

参数名称	数值
MMC桥臂子模块数	20
子模块电容值/mF	5
桥臂电感值/mH	15
子模块电容电压初始值/V	2 000
频率/Hz	50
直流侧电压/kV	20

Research on MMC Circulation Suppression Strategy Based on SOGI

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 15

References 21

Related Articles 8

Metrics

Comments

Recommended 0

[1]	XIA Zihao,LI Yudong. Research on Control Strategy of Single-Phase Grid-Connected Inverter Based on dSPACE [J]. Electronic Science and Technology, 2023, 36(3): 62-68.
[2]	ZHAO Jian,YUAN Boxun,NI Lingfan,LIN Shunfu,WANG Wei. Application of Improved Particle Swarm Optimization Algorithm in Multi-Energy Complementary Microgrid [J]. Electronic Science and Technology, 2022, 35(10): 72-78.
[3]	NIU Shuaichen,WANG Fuzhong,HAN Yaofei,HE Guofeng,NIU Yeke. Control Strategy of Modular Multilevel Converter Under Unbalanced Grid Voltage [J]. Electronic Science and Technology, 2022, 35(1): 80-86.
[4]	LI Yudong,LIAN Haishan,HU Xiaodan. AC/AC Frequency Conversion Power Supply Based on Three-Phase Input [J]. Electronic Science and Technology, 2021, 34(9): 47-53.
[5]	DU Shaotong,DUAN Liangyu,XIE Wenjuan,YANG Wanli. Analysis of Ripple Current in Low-Capacitance Single-Phase Cascaded H-bridge STATCOM [J]. Electronic Science and Technology, 2020, 33(5): 50-57.
[6]	FAN Lele,WANG Xudong,FENG Haichao,XU Xiaozhuo. ModelingAnd Simulation of Primary Winding Piecewise PMSLM System Based on Vector Control [J]. Electronic Science and Technology, 2020, 33(12): 1-6.
[7]	JI Shengyang,WANG Xudong,XU Xiaozhuo,SUN Weixiang,SHI Kaining. Research on Direct Torque Control of Permanent Magnet Synchronous Motor Based on Sliding Mode Control [J]. Electronic Science and Technology, 2019, 32(7): 1-5.
[8]	XU Dayuan,WANG Yingjian,CHEN Guanjun,ZHANG Wei. Research on Dynamic Modeling and Position Control of the Quadcopter [J]. , 2015, 28(1): 69-.