传统矩阵变换器最小相位误差空间矢量过调制策略
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摘要
对传统矩阵变换器的电压传输比特性进行理论研究,推导瞬时电压传输比与输出/输入频率比、输出电压初始相位和输入功率因数角之间的函数关系,分析瞬时电压传输比的变化规律。通过对输出线电压进行二重傅里叶变换,得到传统矩阵变换器最小相位误差过调制下的电压传输比上限值。在此基础上,提出一种基于线性加权原理的最小相位误差过调制策略。仿真与实验结果验证,所提策略可使传统矩阵变换器的基波电压传输比达到0.953,同时保证调制输出电压基波幅值相对参考电压幅值的误差小、输出电流谐波含量低。
This paper investigates the voltage transfer ratio(VTR) characteristics of conventional matrix converter(CMC).The analytic expression of instantaneous voltage transfer ratio(IVTR) affected by output/input frequency ratio,initial phase of output voltage,and input power factor angle is derived and analyzed.By performing double Fourier transform on output line voltage,the maximum fundamental VTR with minimum phase error(MPE) over-modulation strategy is obtained for CMC.A novel MPE over-modulation strategy adopting linear weighted theory is proposed.Both simulation and experimental results show that the proposed strategy can improve fundamental VTR of CMC up to 0.953 while maintaining small output voltage amplitude error and low output current harmonic components.
This paper investigates the voltage transfer ratio(VTR) characteristics of conventional matrix converter(CMC).The analytic expression of instantaneous voltage transfer ratio(IVTR) affected by output/input frequency ratio,initial phase of output voltage,and input power factor angle is derived and analyzed.By performing double Fourier transform on output line voltage,the maximum fundamental VTR with minimum phase error(MPE) over-modulation strategy is obtained for CMC.A novel MPE over-modulation strategy adopting linear weighted theory is proposed.Both simulation and experimental results show that the proposed strategy can improve fundamental VTR of CMC up to 0.953 while maintaining small output voltage amplitude error and low output current harmonic components.
引文
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[17]Li Shanhu,Xia Changliang,Yan Yan,et al.Space vector over-modulation strategy for ultra sparse matrix converter based on the maximum output voltage vector[J].IEEE Transactions on Power Electronics,2017,32(7):5388-5397.
[2]程启明,黄伟,程尹曼,等.双级矩阵变换器驱动永磁同步电机的混合非线性控制系统[J].电工技术学报,2017,32(4):101-111.Cheng Qiming,Huang Wei,Cheng Yiman,et al.Hybrid nonlinear control system of permanent magnet synchronous motor driven by two stage matrix converter[J].Transactions of China Electrotechical Society,2017,32(4):101-111.
[3]秦显慧,周波,刘晓宇,等.基于双级矩阵变换器的变速恒频电源系统的稳定性分析及其改善措施[J].电工技术学报,2016,31(13):18-25.Qin Xianhui,Zhou Bo,Liu Xiaoyu,et al.Stability analysis and improving strategies for two stage matrix converter-based variable speed constant frequency power system[J].Transactions of China Electrotechical Society,2016,31(13):18-25.
[4]徐云飞,肖湘宁,孙雅旻,等.应用于高压低频输电的H桥级联型矩阵变换器环流机理分析[J].电工技术学报,2017,32(6):191-200.Xu Yunfei,Xiao Xiangning,Sun Yamin,et al.Circulating current analysis of cascaded H-bridge matrix converter for high voltage low-frequency ACtransmission[J].Transactions of China Electrotechical Society,2017,32(6):191-200.
[5]Empringham L,Kolar J W,Rodriguez J,et al.Technological issues and industrial application of matrix converters:a review[J].IEEE Transactions on Industrial Electronics,2013,60(10):4260-4271.
[6]Xia Changliang,Li Shanhu,Yan Yan,et al.Research on linear output voltage transfer ratio for ultra-sparse matrix converter[J].IEEE Transactions on Power Electronics,2016,31(3):1811-1815.
[7]朱建林,张建华,郭有贵,等.过调制矩阵变换器的电压传输特性及谐波分析[J].中国电机工程学报,2007,27(7):110-113.Zhu Jianlin,Zhang Jianhua,Guo Yougui,et al.Voltage transfer characteristic and harmonic analysis of matrix converter under over modulation[J].Proceedings of the CSEE,2007,27(7):110-113.
[8]Bozorgi A M,Monfared M,Mashhadi H R,et al.Two simple overmodulation algorithms for space vector modulated three-phase to three-phase matrix converter[J].IET Power Electronics,2014,7(7):1915-1924.
[9]Xia Yihui,Zhang Xiaofeng,Qiao Mingzhong,et al.Research on a new indirect space-vector overmodulation strategy in matrix converter[J].IEEETransactions on Industrial Electronics,2016,63(2):1130-1141.
[10]戴钱坤,葛红娟,李光泉.基于多轨迹矢量加权的矩阵变换器过调制策略[J].电工技术学报,2011,26(4):100-106.Dai Qiankun,Ge Hongjuan,Li Guangquan.Overmodulation strategy of matrix converter based on multi-orbit vector weighted[J].Transactions of China Electrotechical Society,2011,26(4):100-106.
[11]夏益辉,乔鸣忠,张晓峰,等.矩阵变换器间接空间矢量过调制策略分析与研究[J].电工技术学报,2015,30(21):24-30.Xia Yihui,Qiao Mingzhong,Zhang Xiaofeng,et al.The analysis and research of indirect space vector over-modulation strategy for matrix converters[J].Transactions of China Electrotechical Society,2015,30(21):24-30.
[12]Satish T,Mohapatra K K,Mohan N.Steady state over-modulation of matrix converter using simplified carrier based control[C]//Conference of the IEEEIndustrial Electronics Society,Taipei,Taiwan,China,2007:1817-1822.
[13]Yoon Y D,Sul S K.Carrier-based modulation technique for matrix converter[J].IEEE Transaction on Power Electronics,2006,21(6):1691-1703.
[14]康劲松,崔宇航,王硕.基于电流快速响应的永磁同步电机六拍运行控制策略[J].电工技术学报,2016,31(1):165-174.Kang Jinsong,Cui Yuhang,Wang Shuo.The current rapid response control strategy for the six-step operation of permanent magnet synchronous motors[J].Transactions of China Electrotechical Society,2016,31(1):165-174.
[15]Hava A M,Sul S K,Kerkman R J,et al.Dynamic overmodulation characteristics of Triangle intersection PWM methods[J].IEEE Transactions on Industry Applications,1999,35(4):1520-1528.
[16]Nho N V,Youn M J.Two-mode overmodulation in two-level voltage source inverter using principle control between limit trajectories[C]//International Conference on Power Electronics and Drive Systems,Singapore,2003:1274-1279.
[17]Li Shanhu,Xia Changliang,Yan Yan,et al.Space vector over-modulation strategy for ultra sparse matrix converter based on the maximum output voltage vector[J].IEEE Transactions on Power Electronics,2017,32(7):5388-5397.