基于二维调制的级联型整流器负载平衡度限制范围

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (26244 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The loads of cascaded rectifier may be unbalanced at runtime. The DC bus voltages will fail to keep balance when the load balancing degree is beyond a certain range. In this case, the harmonic components of the AC side voltage will increase, leading to the increasing of current harmonic components accordingly. In this paper, the control method based on two-dimensional modulation is studied. Then the modulation waveforms of single-phase two-H-bridge cascaded rectifier are analyzed deeply, and the load balancing limits in which the DC bus voltages are balanceable are deduced from the modulation waveforms. A simulation model based on Matlab/Simulink and a semi-physical real-time simulation platform based on RT-lab are built up. The simulation and experimental results have verified the correctness of the analysis and the conclusion, providing a theoretical basis for the design of transformerless cascaded converter.

Key words： Cascaded rectifier, load balancing limits, two-dimensional modulation, voltage balance

Received: 14 October 2014 Published: 03 January 2017

PACS:

TM461

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Zheng Zheng
	Li Shaoling

Cite this article:

Zheng Zheng,Li Shaoling. Load Balancing Limits of Cascaded Rectifier Based on Two-Dimensional Modulation[J]. Transactions of China Electrotechnical Society, 2016, 31(24): 205-212.

URL:

https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I24/205

[1] 顾春阳, 李永东, 郑泽东, 等. 多绕组高频变压器隔离式多电平变换器研究[J]. 电工技术学报, 2014, 29(8): 97-102.
Gu Chunyang, Li Yongdong, Zheng Zedong, et a1. Research on a high frequency multi-winding trans- former isolated multilevel converter[J]. Transactions of China Electrotechnical Society, 2014, 29(8): 97-102.
[2] Marzoughi A, Iman-Eini H. Indirect control for cascaded H-bridge rectifiers with unequal loads[C]// 2012 3rd Power Electronics and Drive Systems Technology (PEDSTC 2012), Tchran, Iran, 2012: 92-97.
[3] 李继华, 阮新波, 王学华. 级联型多电平逆变器线电压谐波优化的SVPWM策略[J]. 电工技术学报, 2014, 29(6): 120-128.
Li Jihua, Ruan Xinbo, Wang Xuehua. A SVPWM strategy with optimal line-to-line voltage harmonic spectrum for cascaded multilevel inverters[J]. Transactions of China Electrotechnical Society, 2014, 29(6): 120-128.
[4] 郑泽东, 顾春阳, 李永东, 等. 采用多绕组高频变压器的新型多电平变换器拓扑及控制策略[J]. 电工技术学报, 2014, 29(10): 12-18.
Zheng Zedong, Gu Chunyang, Li Yongdong, et al. Topology and control method of a novel multi-level converter with multi-winding high-frequency trans- former[J]. Transactions of China Electrotechnical Society, 2014, 29(10): 12-18.
[5] 林志勇, 江道灼, 周月宾, 等. 基于级联H桥换流器的APF-STATCOM的控制与调制[J]. 电力系统保护与控制, 2014, 42(7): 91-96.
Lin Zhiyong, Jiang Daozhuo, Zhou Yuebin, et al. Control and modulation for APF-STATCOM based on cascaded H-bridge converter[J]. Power System Protection and Control, 2014, 42(7): 91-96.
[6] 王聪, 张国澎, 王俊, 等. 一种适用于级联H桥整流直流侧电容电压快速平衡的新型调制方法[J]. 电工技术学报, 2013, 28(8): 120-127.
Wang Cong, Zhang Guopeng, Wang Jun, et a1. A novel modulation method for fast balancing DC-link capacitor voltages of cascaded H-bridge rectifier[J]. Transactions of China Electrotechnical Society, 2013, 28(8): 120-127.
[7] 郑征, 李斌, 胡丹丹. 基于二维调制的级联型H桥PWM整流器电压平衡控制策略[J]. 河南理工大学学报(自然科学版), 2013, 32(2): 199-204.
Zheng Zheng, Li Bin, Hu Dandan. Voltage balancing control strategy for cascaded H-bridge PWM rectifier based on two dimensional modulation[J]. Journal of Henan Polytechnic University (Natural Science), 2013, 32(2): 199-204.
[8] Iman-Eini H, Farhangi S, Schanen J L. A modular AC/DC rectifier based on cascaded H-bridge rectifier[C]//13th International Power Electronics and Motion Control Conference (EPE-PEMC 2008), Poznan, 2008: 173-180.
[9] 刘文亚, 姚钢, 何娈, 等. 基于级联多电平的有源滤波器直流侧电压平衡控制[J]. 电力系统保护与控制, 2015, 43(4): 94-101.
Liu Wenya, Yao Gang, He Luan, et al. Research of DC voltage balance control based on multi-level cascaded APF[J]. Power System Protection and Control, 2015, 43(4): 94-101.
[10] Wang Cong, Zhang Guopeng, Cheng Hong, et al. A novel modulation strategy based on two dimensional modulation for balancing DC-link capacitor voltages of cascaded H-bridges rectifier[C]//IECON 2012- 38th Annual Conference on IEEE Industrial Elec- tronics Society, Montreal, QC, 2012: 116-122.
[11] Zhang Guopeng, Cheng Hong, Wang Cong, et al. The voltage balance control for new generation of high power cascaded H-bridge rectifier[C]//2011 6th IEEE Conference on Industrial Electronics and Appli- cations (ICIEA), Beijing, 2011: 1387-1391.
[12] 张兴, 张崇巍. PWM整流器及其控制[M]. 北京: 机械工业出版社, 2012.
[13] 侯兆然. 基于虚拟磁链定向的PWM整流器控制方法研究[J]. 电力系统保护与控制, 2014, 42(21): 105-109.
Hou Zhaoran. Research on control method of PWM rectifier based on virtual flux orientation[J]. Power System Protection and Control, 2014, 42(21): 105-109.