改善共模电压和中点电位的虚拟SVPWM策略
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TM464

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国家自然科学基金资助项目(51474069)。


A virtual SVPWM strategy to improve common-mode voltage and neutral-point potential
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    摘要:

    中性点箝位式(NPC)三电平逆变器的拓扑结构以及空间矢量脉宽调制的技术特点决定了逆变器存在中点电位波动和共模电压问题。为此,提出一种改进的虚拟空间矢量脉宽调制策略,可以兼顾中点电位波动抑制和降低共模电压。在分析传统虚拟空间矢量脉宽调制策略原理基础上通过优化基本电压矢量构成和基本矢量的作用顺序达到降低共模电压的目标;同时采用闭环控制策略,监测中点电位和中点电流流向,动态调整中矢量形式,将中点电位波动控制在目标范围内。为验证改进调制策略的实用性和有效性,搭建了仿真和实验平台,仿真和实验结果均表明该策略相较于传统虚拟空间矢量脉宽调制技术,共模电压可降低50%,且稳定状态下中点电位波动范围可控制在5 V内。

    Abstract:

    A neutral-point-clamped(NPC) three-level inverter normally faces the problems of neutral-point fluctuation and common-mode voltage due to its topological structure and technical characteristics of space vector pulse width modulation. In order to solve these problems, an improved virtual-space-vector pulse-with-modulation(PWM) strategy is proposed, which can balance the suppression of neutral-point potential fluctuation and the reduction of the common-mode voltage. On the basis of traditional virtual-space-vector PWM principle, this strategy achieves the goal of reducing the common-mode voltage by optimizing the basic voltage-vector composition and action order. Meanwhile, closed-loop control strategy is adopted to monitor the neutral-point potential and neutral-point current flow, and dynamically adjust the form of mid-vector to control the neutral-point potential fluctuation within the target range. To verify the practicability and effectiveness of the improved virtual-space-vector PWM strategy, the simulation and experiments were carried out. The results indicate that compared with the traditional virtual space vector PWM, the common-mode voltage can be reduced by 50%, and under the steady state, the neutral-point potential fluctuation can be controlled below 5 V.

    参考文献
    [1] Ramasamy P, Krishnasamy V. Minimization of common-mode voltage for five-phase three-level NPC inverter using SVPWM strategy[J]. Iranian Journal of Science and Technology, Transactions of Electrical Engineering, 2020, 44(3):1221-1232.
    [2] Bharatiraja C, Jeevananthan S, Munda J L, et al. Improved SVPWM vector selection approaches in OVM region to reduce common-mode voltage for three-level neutral point clamped inverter[J]. International Journal of Electrical Power & Energy Systems, 2016, 79:285-297.
    [3] Baik J H, Yun S W, Kim D S, et al. SVPWM technique for common-mode voltage elimination of dual-winding fault-tolerant permanent magnet motor drives[J]. Journal of Power Electronics, 2020, 20(3):710-719.
    [4] 吴可丽, 夏长亮, 张云, 等. 二极管钳位型三电平逆变器共模电压抑制[J]. 电工技术学报, 2015, 30(24):110-117,170. Wu K L, Xia C L, Zhang Y, et al. Common-mode voltage suppression for neutral-point-clamped three-level inverter[J]. Transactions of China Electrotechnical Society, 2015, 30(24):110-117,170. (in Chinese)
    [5] 马星河, 马亚光, 刘志怀, 等. 三电平逆变器共模电压及中性点电压平衡策略[J]. 电力电子技术, 2020, 54(8):82-85. Ma X H, Ma Y G, Liu Z H, et al. Common mode voltage and neutral point balance strategy of three-level inverter[J]. Power Electronics, 2020, 54(8):82-85. (in Chinese)
    [6] 牛学洲, 侯蕊欣. 降低共模电压的三电平变流器SVPWM策略[J]. 合肥工业大学学报(自然科学版), 2020, 43(7):919-926. Niu X Z, Hou R X. A novel virtual space vector modulation with reduced common mode voltage and eliminated neutral point voltage oscillation for neutral point clamped three-level inverter[J]. Journal of Hefei University of Technology (Natural Science), 2020, 43(7):919-926. (in Chinese)
    [7] Jun E S, Park S Y, Kwak S. A comprehensive double-vector approach to alleviate common-mode voltage in three-phase voltage-source inverters with a predictive control algorithm[J]. Electronics, 2019, 8(8):872.
    [8] 郭磊磊, 金楠, 韩东许. 电压源逆变器模型预测共模电压尖峰抑制方法[J]. 太阳能学报, 2020, 41(3):282-290. Guo L L, Jin N, Han D X. Model predictive common-mode voltage spike suppression method for voltage source inverter[J]. Acta Energiae Solaris Sinica, 2020, 41(3):282-290. (in Chinese)
    [9] 王萍, 戚银, 张云. NPC三电平逆变器共模电压及中点电位波动协同抑制方法[J]. 电力系统及其自动化学报, 2018, 30(10):28-33. Wang P, Qi Y, Zhang Y. Co-inhibition method of common mode voltage and neutral point potential fluctuation for NPC three-level inverter[J]. Proceedings of the CSU-EPSA, 2018, 30(10):28-33. (in Chinese)
    [10] Le Q A, Park D H, Lee D C. Common-mode voltage elimination with an auxiliary half-bridge circuit for five-level active NPC inverters[J]. Journal of power electronics, 2017, 17(4):923-932.
    [11] Guo L L, Zhang X, Yang S Y, et al. A model predictive control-based common-mode voltage suppression strategy for voltage-source inverter[J]. IEEE Transactions on Industrial Electronics, 2016, 63(10):6115-6125.
    [12] Monge S B, Somavilla S, Bordonau J, et al. Capacitor voltage balance for the neutral-point-clamped converter using the virtual space vector concept with optimized spectral performance[J]. IEEE Transactions on Power Electronics, 2007, 22(4):1128-1135.
    [13] 胡存刚, 王群京, 李国丽, 等. 基于虚拟空间矢量的三电平NPC逆变器中点电压平衡控制方法[J]. 电工技术学报, 2009, 24(5):100-107. Hu C G, Wang Q J, Li G L, et al. A neutral-point potential balancing algorithm for three-level inverter based on virtual-space-vector[J]. Transactions of China Electrotechnical Society, 2009, 24(5):100-107. (in Chinese)
    [14] Jiang W D, Du S W, Chang L C, et al. Hybrid PWM strategy of SVPWM and VSVPWM for NPC three-level voltage-source inverter[J]. IEEE Transactions on Power Electronics, 2010, 25(10):2607-2619.
    [15] Wu X, Tan G J, Ye Z B, et al. Virtual-space-vector PWM for a three-level neutral-point-clamped inverter with unbalanced DC-links[J]. IEEE Transactions on Power Electronics, 2018, 33(3):2630-2642.
    [16] 王志强, 邓臣臣, 谷鑫, 等. 基于中点钳位型三电平逆变器的改进型虚拟空间矢量调制策略[J]. 电工技术学报, 2017, 32(18):230-238. Wang Z Q, Deng C C, Gu X, et al. The improved virtual space vector modulation strategy based on neutral-point-clamped three-level inverter[J]. Transactions of China Electrotechnical Society, 2017, 32(18):230-238. (in Chinese)
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任娇,付光杰.改善共模电压和中点电位的虚拟SVPWM策略[J].重庆大学学报,2021,44(8):125-133.

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  • 收稿日期:2021-02-27
  • 在线发布日期: 2021-08-31
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