An Extended DPWM for Neutral Point Clamped Three-level Converter With a Full Range of Neutral Point Voltage Balance

被引：0
|
作者：
Wang J. [1 ]
Zhai F. [1 ]
Jiang W. [1 ]
Li L. [1 ]
Li J. [1 ]
机构：
[1] School of Electrical Engineering and Automation, Hefei University of Technology, Hefei, 230009, Anhui Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2019年 / 39卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Discontinuous pulse width modulation (DPWM); Modulation index (MI); Neutral point voltage; Power factor (PF); Switching loss;
D O I：
10.13334/j.0258-8013.pcsee.180535
中图分类号：
学科分类号：
摘要：
In the neutral point clamped three level converter (NPC TLC), the discontinuous modulation method can effectively reduce the switching loss, but it has some shortcomings in the neutral point voltage (NPV) balancing control. So a hybrid modulation strategy of convention discontinuous pulse width modulation (DPWM) mode (C_MODE) and extended DPWM mode (E_MODE) was proposed, which is EDPWM. C_MODE and E_MODE have good complementarity in the control of NPV balancing. EDPWM modulation strategy can maintain the NPV balance under the full range of modulation index (MI) and power factor (PF). And because the switching actions of C_MODE and E_MODE in one switching cycle are twice and three times, respectively, EDPWM can reduce switching loss on the premise of good control of neutral point voltage. A variety of modulation strategies were compared in terms of switching loss and NPV capability. Finally, the feasibility and superiority of EDPWM were verified by experiments. © 2019 Chin. Soc. for Elec. Eng.
引用
收藏
页码：1770 / 1782
页数：12
相关论文
共 22 条
  • [1] Nabae A., Takahashi I., Akagi H., A new neutral-point- clamped PWM inverter, IEEE Transactions on Industry Applications, 5, pp. 518-523, (1981)
  • [2] Mai T.D., Van Den Broeck G., Pevere A., Et al., Power electronics for potential distribution dc power evolution: A review, 2016 IEEE International Energy Conference (ENERGYCON), pp. 1-6, (2016)
  • [3] Barater D., Concari C., Buticchi G., Et al., Performance evaluation of a three-level ANPC photovoltaic grid-connected inverter with 650V sic devices and optimized PWM, IEEE Transactions on Industry Applications, 52, 3, pp. 2475-2485, (2016)
  • [4] Sommer R., Mertens A., Brunotte C., Et al., Medium voltage drive system with NPC three-level inverter using IGBTs, IEE Seminar PWM Medium Voltage Drives, pp. 3/1-3/5, (2000)
  • [5] Wu H., He X., Relationship between multilevel carrier-based PWM and SVPWM and its applications, Proceedings of the CSEE, 22, 5, pp. 10-15, (2002)
  • [6] Chen J., He Y., Wang X., Et al., Research of the unity theory between three-level space vector and carrier-based PWM modulation strategy, Proceedings of the CSEE, 33, 9, pp. 71-78, (2013)
  • [7] Wang Z., Cui F., Zhang G., Et al., Novel carrier-based PWM strategy with zero-sequence voltage injected for three-level NPC inverter, IEEE Journal of Emerging and Selected Topics in Power Electronics, 4, 4, pp. 1442-1451, (2016)
  • [8] Pou J., Zaragoza J., Ceballos S., Et al., A carrier-based PWM strategy with zero-sequence voltage injection for a three-level neutral-point-clamped converter, IEEE Transactions on Power Electronics, 27, 2, pp. 642-651, (2012)
  • [9] Song W., Chen G., Shu M., Et al., Research on SVPWM method and its neutral-point- potential control for three-level neutral-point-clamped (NPC) inverter, Proceedings of the CSEE, 26, 5, pp. 106-109, (2006)
  • [10] Jiang W., Wang Q., Shi X., Et al., Low frequency oscillation of neutral point voltage of neutral-point-clamped three-level VSI under SVPWM control, Proceedings of the CSEE, 29, 3, pp. 49-55, (2009)
123