一种基于载波层叠脉宽调制的倍频调制方法

doi:10.19595/j.cnki.1000-6753.tces.161596

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (84156 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract For the hybrid cascaded seven-level inverter with a DC-side voltage ratio of 1∶2, it is necessary to ameliorate the conventional modulation method to improve the practicality of the topology. The general hybrid modulation method has a power reverse problem in some modulation ratio interval. Although the unipolar pulse width modulation (PWM) method solves this problem, the high voltage cell working at high frequency in some interval limits the switching frequency of the whole system. The hybrid frequency method reduces the switching frequency of the high voltage cell to a certain extent, but the harmonic characteristics of output voltage will be affected. In view of this, a double frequency modulation method based on the level-shifted PWM (LS-PWM) is proposed in this paper, which not only avoids the power reverse problem but also has a good harmonic characteristic with low switching frequency in high voltage cell. Computer simulations and experiments have verified the proposed method.

Key words： Hybrid cascaded modulation method level-shifted pulse width modulation double frequency

Received: 30 September 2016 Published: 24 May 2018

PACS:

TM46

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Chen Zhong
	Xu Yaming
	Yuan Tao

Cite this article:

Chen Zhong,Xu Yaming,Yuan Tao. A Double Frequency Modulation Method Based on the Level-Shifted Pulse Width Modulation[J]. Transactions of China Electrotechnical Society, 2018, 33(10): 2334-2344.

URL:

https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.161596 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I10/2334

[1] 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.
[2] 何英杰, 付亚斌, 段文岩. 一种星接H桥级联型SVG直流侧电压均衡控制方法研究[J]. 电工技术学报, 2016, 31(11): 13-21.
He Yingjie, Fu Yabin, Duan Wenyan.Research on DC voltage balancing control method of star connection cascaded H bridge static var generator[J]. Transactions of China Electrotechnical Society, 2016, 31(11): 13-21.
[3] 陈仲, 王志辉, 陈淼. 一种高动态性能的级联型有源电力滤波器[J]. 电工技术学报, 2015, 30(3): 147-154.
Chen Zhong, Wang Zhihui, Chen Miao.A cascade H-bridge active power filter with high dynamic performance[J]. Transactions of China Electro- technical Society, 2015, 30(3): 147-154.
[4] Adam G P, Abdelsalam I A, Ahmed K H, et al.Hybrid multilevel converter with cascaded H-bridge cells for HVDC applications: operating principle and scalability[J]. IEEE Transactions on Power Elec- tronics, 2015, 30(1): 65-77.
[5] Yu Yifan, Konstantinou G, Hredzak B, et al.Power balance optimization of cascaded H-bridge multilevel converters for large-scale photovoltaic integration[J]. IEEE Transactions on Power Electronics, 2016, 31(2): 1108-1120.
[6] 梅杨, 孙凯, 黄震. 二极管中点钳位型三电平逆变器—交流电机调速系统的高精度建模与分析[J]. 电工技术学报, 2015, 30(6): 200-207.
Mei Yang, Sun Kai, Huang Zhen.High accuracy modeling and analysis of neutral-point-clamped three-level inverter fed AC motor drive system[J]. Transactions of China Electrotechnical Society, 2015, 30(6): 200-207.
[7] 姜卫东, 赵德勇, 胡杨, 等. 基于载波实现的二极管钳位型三电平逆变器虚拟空间矢量脉宽调制方法[J]. 电工技术学报, 2016, 31(12): 153-160.
Jiang Weidong, Zhao Deyong, Hu Yang, et al.Carrier-based virtual space vector pulse width modulation for diode clamped three-level inverter[J]. Transactions of China Electrotechnical Society, 2016, 31(12): 153-160.
[8] McGrath B P,Meynard T, Gateau G, et al. Optimal modulation of flying capacitor and stacked multicell converters using a state machine decoder[J]. IEEE Transactions on Power Electronics, 2007, 22(2): 508-516.
[9] Rech C, Pinheiro J R.Hybrid multilevel converters: unified analysis and design considerations[J]. IEEE Transactions on Industrial Electronics, 2007, 54(2): 1092-1104.
[10] Silva C A, Córdova L A, Lezana P, et al.Implementation and control of a hybrid multilevel converter with floating DC links for current waveform improvement[J]. IEEE Transactions on Industrial Electronics, 2011, 58(6): 2304-2312.
[11] Debnath S, Qin Jiangchao, Bahrani B, et al.Operation, control, and applications of the modular multilevel converter:a review[J]. IEEE Transactions on Power Electronics, 2015, 30(1): 37-53.
[12] 蔡信健, 吴振兴, 孙乐, 等. 直流电压不均衡的级联H桥多电平变频器载波移相PWM调制策略的设计[J]. 电工技术学报, 2016, 31(1): 119-127.
Cai Xinjian, Wu Zhenxing, Sun Le, et al.Design for phase-shifted carrier pulse width modulation of cascaded H-bridge multi-level inverters with non- equal DC voltages[J]. Transactions of China Electrotechnical Society, 2016, 31(1): 119-127.
[13] Sreenivasarao D, Agarwal P, Das B.Performance evaluation of carrier rotation strategy in level-shifted pulse-width modulation technique[J]. IET Power Electronic, 2014, 7(3): 667-680.
[14] 杨晓冬, 王崇林, 史丽萍, 等. 级联型逆变器的统一SVPWM方法[J]. 电工技术学报, 2014, 29(6): 145-152.
Yang Xiaodong, Wang Chonglin, Shi Liping, et al.Generalized space vector PWM method for cascaded multilevel inverters[J]. Transactions of China Elec- trotechnical Society, 2014, 29(6): 145-152.
[15] Sepahvand H, Liao Jingsheng, Ferdowsi M, et al.Capacitor voltage regulation in single-DC-source cascaded H-bridge multilevel converters using phase-shift modulation[J]. IEEE Transactions on Industrial Electronics, 2013, 60(9): 3619-3626.
[16] Manjrekar M D, Lipo T A.A hybrid multilevel inverter topology for drive applications[C]// Proceedings of IEEE Conference on Applied Power Electronics Conference and Exposition (APEC), Anaheim, California, 1998: 523-529.
[17] Manjrekar M D, Steimer P K, Lipo T A.Hybrid multilevel power conversion system: a competitive solution for high-power applications[J]. IEEE Transactions on Industry Applications, 2000, 36(3): 834-841.
[18] Chen Zhong, Wang Zhihui, Liu Yayun, et al.A unipolar PWM strategy for hybrid cascaded multi- level converters[C]//Industrial Electronics Society (IECON), Dallas, TX, USA, 2014: 1154-1160.