多模块APF并联系统高频谐波环流分析与控制

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (2593 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Because the high-frequency switching harmonics of the active power filter (APF) are generally not included in the closed current control loop,they will have the characteristics of voltage source,which may cause the high-frequency harmonic circular currents in the modules of multi-module APF.These harmonic circular currents will increase the power loss and reduce the system stability and control precision.To solve above problems,through building the circular current mathematical model,the formation mechanism of the circular current and its influences are analyzed in detail.Furthermore,the influences of the output filters (OF) on the circular currents are researched.Finally,a coordinated control strategy to suppress the circular currents is introduced.The theoretical analysis and experimental results show that:Firstly,the primary cause of the circular currents is the asynchronization of SPWM carrier waves;Secondly,the circular currents do not flow into the power system;thirdly,the OF can inhibit the non-circular part of the high-frequency harmonic currents,but it is ineffective to the circular part and will undermine the system stability;Finally,the circular currents can be inhibited effectively by the coordinated control method proposed in this paper.

Key words： Multi-module APF high-frequency harmonic circular currents CPS-SPWM output filter coordinated control

Received: 22 January 2015 Published: 16 March 2016

PACS:

TM46

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Xu Sheng
	Fei Shumin
	Zhao Jianfeng
	Huang Yunkai

Cite this article:

Xu Sheng,Fei Shumin,Zhao Jianfeng等. Analysis and Control of High-Frequency Harmonic Circular Currents in Multi-Module APF Parallel System[J]. Transactions of China Electrotechnical Society, 2016, 31(5): 60-68.

URL:

https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I5/60

[1] Dang Pengpai,Ellinger T,Petzoldt J.Dynamic interaction analysis of APF systems[J].IEEE Transactions Industrial Electronics,2014,61(9):4467-4473.
[2] Sun Xiaofeng,Zeng Jian,Chen Zhe.APF for harmonic voltage resonance suppression in distribution system[C]//2nd IEEE International Power Electronics for Distributed Generation Systems,Hefei,2010:818-822.
[3] Rahmani S,Hamadi A,Al-Haddad K,et al.A combination of shunt hybrid power filter and thyristor-controlled reactor for power quality[J].IEEE Transactions Industrial Electronics,2014,61(5):2152-2164.
[4] Fang Hongjuan,Yang Rongfeng,Yu Yannan,et al.A study on the DC voltage control techniques of cascaded multilevel APF[C]//7th International Power Electronics and Motion Control Conference,Harbin,2012:2727-2731.
[5] Wang Yafang,Gu Juping,Chen Ruixiang,et al.The multi-modular shunt APF based on direct current control and frequency doubling carrier phase-shifted SPWM[C]//IEEE ECCE Asia Downunder,Melbourne,VIC,2013:867-871.
[6] Xie Chuan,Wang Yue,Zhong Xiaojian,et al.A novel active damping method for LCL-filter-based shunt Active Power Filter[C]//IEEE International Symposium on Industrial Electronics,Hangzhou,2012:64-69.
[7] Pan Donghua,Ruan Xinbo,Wang Xuehua,et al.Magnetic integration of an LCL filter for the single-phase grid-connected inverter[C]//IEEE Energy Conversion Congress and Exposition,Raleigh,NC,2012:573-578.
[8] Ilves K,Antonopoulos A,Harnefors L,et al.Circulating current control in modular multilevel converters with fundamental switching frequency[C]//2012 7th International Power Electronics and Motion Control Conference,Harbin,2012,1:249-256.
[9] Xu Fan,Guo Ben,Xu Zhuxian,et al.SiC based current source rectifier paralleling and circulating current suppression[C]//Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition,Long Beach,CA,2013:402-409.
[10]何国锋,徐德鸿.基于解耦控制的多模块逆变器并联系统直流环流抑制策略[J].中国电机工程学报,2012,32(18):43-50.
He Guofeng,Xu Dehong.The DC circulation current control strategy based on decoupled control scheme in the multi-module paralleled inverter system[J].Proceedings of the CSEE,2012,32(18):43-50.
[11]余蜜,康勇,张宇,等.基于环流阻抗的逆变器并联控制策略[J].中国电机工程学报,2008,28(18):42-46.
Yu Mi,Kang Yong,Zhang Yu,et al.Research on a novel current-sharing scheme based on circulating impedance of multi-inverter parallel system[J].Proceedings of the CSEE,2008,28(18):42-46.
[12]Khadem S K,Basu M,Conlon M F.Reduction of circulating current flow in parallel operation of APF based on hysteresis current control[C]//48th International Universities Power Engineering Conference,Dublin,2013:1-6.
[13]平定钢,孔洁,陈国柱.载波移相SPWM 并联变流器及其环流问题的研究[J].电气自动化,2008,30 (4):17-19.
Ping Dinggang,Kong Jie,Chen Guozhu.The research on carrier phase-shift SPWM and circulation currents in parallel converters[J].Electrical Automation,2008,30(4):17-19.
[14]杨晓利,葛宝明,姜新建.并联型多重化三相四线有源电力滤波器综合控制策略研究[J].电力系统保护与控制,2012,40(23):103-108.
Yang Xiaoli,Ge Baoming,Jiang Xinjian.Integrated control strategy of three-phase four-wire shunt active power filter using multiple converters[J].Power System Protection and Control,2012,40(23):103-108.
[15]杨波,曾光,钟彦儒,等.大容量链式多电平变换器的优化CPS-PWM方法[J].电工技术学报,2013,28(10):167-178.
Yang Bo,Zeng Guang,Zhong Yanru,et al.An optimal CPS-PWM strateg for high-power cascaded multilevel converters[J].Transactions of China Electrotechnical Society,2013,28(10):167-178.
[16]许胜,赵剑锋.基于不对称规则采样法的级联H桥型变流器CPS-SPWM输出电压谐波特性分析[J].电工技术学报,2011,26(6):121-128.
Xu Sheng,Zhao Jianfeng.Analysis of the harmonic characteristics of the CPS-SPWM output voltage of cascaded H-bridge converters based on irregular sampling[J].Transactions of China Electrotechnical Society,2011,26(6):121-128.