Abstract：Three-level VSVPWM algorithm will produce narrow pulse in certain region of the space vector diagram. Switching loss and harmonics will increase when narrow pulse appears. Firstly, the distribution region about narrow pulse of three-level VSVPWM algorithm is analyzed theoretically. Then, a narrow pulse suppression algorithm is proposed. In the region where narrow pulse appears, the sequence and the segment of switching vector are optimized and adjusted according to the basic allocation principle of switching vector. Most of the narrow pulses are avoided without affecting the synthesis of space vector. Simulation and experimental results verify theoretical analysis.
李敏裕, 马晓军, 魏曙光, 石昊, 张运银. 三电平虚拟空间矢量脉宽调制算法窄脉冲抑制研究[J]. 电工技术学报, 2018, 33(14): 3264-3273.
Li Minyu, Ma Xiaojun, Wei Shuguang, Shi Hao, Zhang Yunyin. Research on Narrow Pulse Suppression of Three-Level Virtual Space Vector Pulse Width Modulation Algorithm. Transactions of China Electrotechnical Society, 2018, 33(14): 3264-3273.
[1] 马琳, 孙凯, Remus Teodorescu, 等. 高效率中点钳位型光伏逆变器拓扑比较[J]. 电工技术学报, 2011, 26(2): 108-114. Ma Lin, Sun Kai, Remus Teodorescu, et al.Comparison of the topologies of high efficiency neutral point clamping photovoltaic inverters[J]. Transactions of China Electrotechnical Society, 2011, 26(2): 108-114. [2] 李浩. 大功率三电平变换器关键技术及同步电机传动控制系统研究[D]. 徐州: 中国矿业大学, 2010. [3] 刘斌, 黄凯伦, 伍家驹, 等. 一种具有中点电位平衡可降低损耗的三电平空间矢量调制方法[J]. 电工技术学报, 2015, 30(4): 196-202. Liu Bin, Huang Kailun, Wu Jiaju, et al.A novel SVPWM method considering neutral-point potential balancing and reducing switching losses for three- level inverter[J]. Transactions of China Electro- technical Society, 2015, 30(4): 196-202. [4] 陈鑫兵, 何礼高. 基于模糊控制的三电平逆变器中点电位平衡策略[J]. 电工技术学报, 2007, 22(10): 103-108. Chen Xinbing, He Ligao.Research on neutral point potential balance of three-level inverter based on fuzzy logic control strategy[J]. Transactions of China Electrotechnical Society, 2007, 22(10): 103-108. [5] 范波, 赵伟刚, 刘刚, 等. 基于优化虚拟矢量的三电平逆变器中点电位平衡闭环控制[J]. 电工技术学报, 2015, 30(4): 179-186. Fan Bo, Zhao Weigang, Liu Gang, et al.Closed-loop control of neutral-point voltage balance based on the optimized virtual space vector for three-level inverter[J]. Transactions of China Electrotechnical Society, 2015, 30(4): 179-186. [6] 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 Cungang, Wang Qunjing, Li Guoli, 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. [7] 薄保中, 刘卫国, 苏彦民. 三电平逆变器PWM控制窄脉冲补偿技术的研究[J]. 中国电机工程学报, 2005, 25(10): 60-64. Bo Baozhong, Liu Weiguo, Su Yanmin.Study of compensating technique in PWM control for three- level inverters[J]. Proceedings of the CSEE, 2005, 25(10): 60-64. [8] 王琛琛, 管勃. 一种兼顾二极管钳位型三电平变换器中点电位平衡的窄脉冲处理方法[J]. 电工技术学报, 2015, 30(19): 136-143. Wang Chenchen, Guan Bo.A narrow pulse pro- cessing method considering neutral-point potential balance problem of diode-clamped three-level inverters[J]. Transactions of China Electrotechnical Society, 2015, 30(19): 136-143. [9] Liu H L, Cho G H.Three-level space vector PWM in low index modulation region avoiding narrow pulse problem[J]. IEEE Transactions on Power Electronics, 1994, 5(5): 482-484. [10] 徐华, 高菊玲, 何礼高. 三电平逆变器SVPWM的死区补偿和窄脉冲处理[J]. 电力电子技术, 2012, 46(2): 26-28. Xu Hua, Gao Juling, He Ligao.The dead-time and narrow pulse compensation of three-level inverter based on SVPWM[J]. Power Electronics, 2012, 46(2): 26-28. [11] 张钢, 刘志刚, 王磊, 等. 改进型三电平空间矢量调制方法[J]. 北京交通大学学报, 2010, 34(5): 78-82. Zhang Gang, Liu Zhigang, Wang Lei, et al.An improved three-level space vector modulation method[J]. Journal of Beijing Jiaotong University, 2010, 34(5): 78-82. [12] 王兆宇, 艾芊. 三电平逆变器空间矢量调制及中点电压控制[J]. 电力系统保护与控制, 2011, 39(20): 131-136. Wang Zhaoyu, Ai Qian.Space vector modulation for three-level inverter and neutral point potential control[J]. Power System Protection and Control, 2011, 39(20): 131-136.
2018, Vol. 33 
