An Improve Synchronized Space Vector Modulation Strategy for Three-Level Inverter

被引：0
|
作者：
Zhang G. [1 ]
Chen W. [2 ]
Gu X. [1 ]
Li X. [1 ]
Zhou Z. [2 ]
机构：
[1] School of Electrical Engineering and Automation, Tiangong University, Tianjin
[2] School of Artificial Intelligence, Tiangong University, Tianjin
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2020年 / 35卷 / 18期
关键词：
Harmonic distortion; Space vector modulation (SVM); Synchronous modulation; Three-level inverter;
D O I：
10.19595/j.cnki.1000-6753.tces.190966
中图分类号：
学科分类号：
摘要：
Due to the limitation of switching loss, the switching frequency of three-level traction inverter for high-speed railway and urban railway is usually low than 1kHz. If the inverter is operated in the medium and high frequency regions, the decrease of carrier ratio will lead to the increase of low-order harmonics in the output voltage, so synchronous modulation strategy should be adopted. The conventional strategy can only guarantee the synchronization and symmetry of the output waveform, and fails to further optimize the quality of the output waveform. As a result, the amplitudes of low-order harmonics in the output waveform are still high. The design rules of switching sequence for the synchronous space vector modulation (SVM) were deduced according to the restriction of synchronization, three-phase symmetry, half-wave symmetry and quarter-cycle symmetry. Then an alternative switching sequence set was established, and the optimal switching sequence was obtained by evaluating the weighted total harmonic distortion. Simulation and experimental results show that the proposed strategy can effectively improve the output waveform quality of traction inverter. © 2020, Electrical Technology Press Co. Ltd. All right reserved.
引用
收藏
页码：3908 / 3916
页数：8
相关论文
共 21 条
  • [1] Shi Tingna, Liu Chao, Zhang Guozheng, Et al., Discontinuous space vector PWM for three-level inverter with comprehensive performance optimi- zation, Transactions of China Electrotechnical Society, 33, 24, pp. 5874-5883, (2018)
  • [2] Gu Xin, Liu Chao, Zhang Guozheng, Et al., Space- vector based synchronous discontinuous PWM for three-level inverter with output current optimi- zation, Transactions of China Electrotechnical Society, 34, 5, pp. 924-933, (2019)
  • [3] Xia Changliang, Zhang Tianyi, Zhou Zhanqing, Et al., Model predictive torque control with switching table for neutral point clamped three-level inverter-fed permanent magnet synchronous motor, Transa- ctions of China Electrotechnical Society, 31, 20, pp. 83-92, (2016)
  • [4] Chen Wei, Chen Yujian, Geng Qiang, Selective harmonic elimination pulse width modulation based on improved hybrid particle swarm optimization, Journal of Tianjin University: Science and Techno- logy, 49, 5, pp. 498-505, (2016)
  • [5] Gu Xin, Jiang Bo, Geng Qiang, Et al., An optimal SHE-PWM modulation strategy for three-level NPC converter based on third harmonic control and pulse fluctuation analysis, Transactions of China Elec- trotechnical Society, 30, 7, pp. 88-96, (2015)
  • [6] Zhang Zhigang, Huang Shoudao, Hu Cungang, Et al., Hybrid method of three-level SHEPWM and SVPWM and its vector smooth-switching, Transactions of China Electrotechnical Society, 30, 14, pp. 342-349, (2015)
  • [7] Balasubramonian M, Rajamani V., Design and real- time implementation of SHEPWM in single-phase inverter using generalized hopfield neural network, IEEE Transactions on Industrial Electronic, 61, 11, pp. 6327-6336, (2014)
  • [8] Memona M A, Mekhilefa S, Mubina M, Et al., Selective harmonic elimination in inverters using bio-inspired intelligent algorithms for renewable energy conversion applications: a review, Rene- wable and Sustainable Energy Reviews, 82, 3, pp. 2235-2253, (2018)
  • [9] Zhang Gang, Dong Kan, Diao Lijun, Et al., A comparative study of the modulation algorithm in middle frquency region for high power traction inverter, Transactions of China Electrotechnical Society, 31, pp. 1-9, (2016)
  • [10] Dong Kan, Hybrid pulse width modulation strategy based on current harmonic minimum technique, Transactions of China Electrotechnical Society, 32, 20, pp. 179-188, (2017)
123