Narrow Pulse Suppression for Ultra Sparse Matrix Converter
Shi Tingna1,An Shaobo1,Yan Yan1,Xia Changliang1,2
1. School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China; 2. Tianjin Key Laboratory of Advanced Technology of Electrical Engineering and Energy Tianjin Polytechnic University Tianjin 300387 China
Abstract：Limited by the property of switching devices, lots of narrow pulses are generated in the conventional space vector modulation of ultra sparse matrix converter (USMC), which will cause nonlinear distortion of the output waveform. Aiming at this condition, the causes that generating narrow pulses were analyzed and a narrow pulse suppression method was developed after improving the conventional modulation strategy. With the improved strategy, the order of active vectors in rectifier stage was rearranged after comparing the magnitude of duty cycle of each vector, which could avoid the losing of active vectors. At the same time, suitable zero space vectors were placed in the modulation of inverter stage to increase the width of pulses, which could reduce the number of narrow pulses. This strategy not only can effectively suppress the nonlinear distortion caused by narrow pulses, which can optimize the input-output performance of USMC, but also easily to implement without additional hardware. The feasibility and effectiveness of the proposed method are verified by experimental results.
[1] Lee M Y, Wheeler P, et al. Space-vector modulated multilevel matrix converter[J]. IEEE Transactions on Industrial Electronics, 2010, 57(10): 3385-3394. [2] Shi Tingna, Yan Yan, An Haijiao, et al. Improved double line voltage synthesis strategies of matrix converter for input/output quality enhancement[J]. IEEE Transactions on Industrial Electronics, 2013, 60(8): 3034-3046. [3] Tuyen D N. Modulation strategies to reduce common- mode voltage for indirect matrix converters[J]. IEEE Transactions on Industrial Electronics, 2012, 59(1): 129-140. [4] 马星河, 等. 一种改进的矩阵变换器双电压合成控制策略[J]. 电工技术学报, 2009, 24(4): 126-132. Ma Xinghe, Tan Guojun, Wang Xudong, et al. An improved two line voltage synthesis control strategy of matrix converter[J]. Transactions of China Elec- trotechnical Society, 2009, 24(4): 126-132. [5] 蔡巍, 等. 矩阵变换器两种调制策略的比较与分析[J]. 电力系统保护与控制, 2013, 41(10): 111-117. Cai Wei, et al. Comparison between two modulation methods of matrix converter[J]. Power System Protection and Control, 2013, 41(10): 111-117. [6] 杨洪金, 等. 五相矩阵变换器逆变侧控制策略的研究[J]. 电气应用, 2010, 29(16): 42-45. Yang Hongjin, et al. Novel control method for the inverter stage of 5-phase matrix converter[J]. Electrical Applications, 2010, 29(16): 42-45. [7] 林崎, 等. 双级矩阵变换器在统一潮流控制器中的应用研究[J]. 电力系统保护与控制, 2011, 39(9): 65-76. Lin Qi, et al. Study of the application of matrix converter in unified power flow controller[J]. Power System Protection and Control, 2011, 39(9): 65-76. [8] 刘晓宇, 周 波, 等. 双级矩阵变换器的网侧功率因数[J]. 电工技术学报, 2012, 27(12): 71-78. Liu Xiaoyu, Zhou Bo, et al. Investigation on grid side power factor of two stage matrix converter[J]. Transactions of China Electrotechnical Society, 2012, 27(12): 71-78. [9] Kolar J W, et al. Review of three-phase PWM AC-AC converter topologies[J]. IEEE Transactions on Indus- trial Electronics, 2011, 58(11): 4988-5006. [10] Wheeler P W, Rodriguez J, et al. Matrix converters: a technology review[J]. IEEE Transactions on Industrial Electronics, 2002, 49(2): 276-288. [11] 孙尧, 粟梅, 王辉, 等. 双级矩阵变换器的非线性分析及其补偿策略[J]. 中国电机工程学报, 2010, 30(12): 20-27. Sun Yao, Su Mei, Wang Hui, et al. Nonlinearity analysis and compensation strategies for two-stage matrix converter[J]. Proceedings of the CSEE, 2010, 30(12): 20-27. [12] 何必, 林桦, 等. 矩阵变换器在窄脉冲作用下的性能改善[J]. 中国电机工程学报, 2009, (27): 42-47. He Bi, Lin Hua, et al. Improvement in output voltage for matrix converter under n arrow pulses[J]. Proceedings of the CSEE, 2009(27): 42-47. [13] 齐琛, 陈希有. 一种可靠换流的双级矩阵变换器载波调制策略[J]. 电工技术学报, 2013, 28(6): 184-191. Qi Chen, Chen Xiyou. A carrier-based modulation strategy of two stage matrix converter with reliable commutation[J]. Transactions of China Electrotechnical Society, 2013, 28(6): 184-191. [14] 李辉, 阳春华, 邓文浪. 一种矩阵变换器输出电压的非线性前馈补偿方法[J]. 电力系统保护与控制, 2011, 39(7): 74-78. Li Hui, Yang Chunhua, Deng Wenlang. A nonlinearity- feed-forward compensation method for output voltage of matrix converter[J]. Power System Protection and Control, 2011, 39(7): 74-78.
2015, Vol. 30 
