采用多逆变器重构矩阵变换器SVPWM调制策略
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摘要
针对矩阵变换器电压传输比低、调制策略复杂的问题,该文提出了一种采用多个逆变器重新构建矩阵变换器新型SVPWM调制策略。该策略采用三相最大线电压作为逆变器的直流母线电压以提高电压传输比。重构是基于双向开关的逆变器,控制策略简单,易于在线实现。传统策略与新型策略的仿真与实验表明:在线性调制范围内,新型SVPWM调制算法电压传输比提高到0. 955,与传统间接空间矢量调制算法的0. 866电压传输比相比,提高了10%,开关损耗减小到了原来的50%。
A novel SVPWM modulation strategy based on multiple inverters is proposed to solve the problem of low voltage transmission ratio and complex modulation strategy of matrix converter. The three-phase maximum line voltage is used as the DC busbar voltage of the inverter to improve the voltage transfer ratio. Reconfiguration is based on the bi-directional switch inverter,control strategy is simple and easy to implement online. Simulation and experiment of traditional and new strategies show that the voltage transmission ratio of the new SVPWM modulation algorithm is increased to 0. 955 in the linear modulation range,which is 10% higher than the 0. 866 voltage transmission ratio of the traditional indirect space vector modulation algorithm,and the switching loss is reduced to 50%.
A novel SVPWM modulation strategy based on multiple inverters is proposed to solve the problem of low voltage transmission ratio and complex modulation strategy of matrix converter. The three-phase maximum line voltage is used as the DC busbar voltage of the inverter to improve the voltage transfer ratio. Reconfiguration is based on the bi-directional switch inverter,control strategy is simple and easy to implement online. Simulation and experiment of traditional and new strategies show that the voltage transmission ratio of the new SVPWM modulation algorithm is increased to 0. 955 in the linear modulation range,which is 10% higher than the 0. 866 voltage transmission ratio of the traditional indirect space vector modulation algorithm,and the switching loss is reduced to 50%.
引文
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[14]唐酿,肖湘宁,陈征,等.矩阵变流器虚拟逆变侧无扇区调制算法[J].中国电机工程学报,2012,32(09):79-85+13.
[15] Li Shengmin,Lu jing,Zhong Yanru. An Over-Modulation in Matrix Converter Based on Limit-Trajectory[J]. Transactions of China electrotechnical society,2012,27(6):110-117.
[16] Yan Z,Jia M,Zhang C,et al. An Integration SPWM Strategy for High-Frequency Link Matrix Converter With Adaptive Commutation in One Step Based on Dere-Coupling Idea[J]. IEEE Transactions on Industrial Electronics,2012,59(1):116-128.
[17]蔡巍,何必,乔鸣忠,等.换序法在矩阵变换器调制策略中的应用及其优化[J].电工技术学报,2012,27(10):135-14.
[2]粟梅,谢红军,孙尧.基于CPLD的双级矩阵变换器研究与实现[J].电气传动,2009,39(3):33-35.
[3]汤宁平,王建宽,吴汉光.矩阵变换器的SPWM控制技术及其实现[J].电工技术学报,2003,18(4):25-29.
[4] J Mahlein,J Igney. Matrix Converter Commutation Strategies With and Without Explicit Input Voltage Sign Measurement[J]. IEEE Transactions On Industrial Electronics,2002.
[5]李生民,黄澔,钟彦儒,等.虚拟不可控整流矩阵变换器研究[J].西安理工大学学报,2010,26(1):87-91.
[6]李辉,阳春华,邓文浪,等.基于DSP28335的矩阵变换器控制系统研究[J].电气传动自动化,2011,33(3):1-4.
[7]李生民,邢新波,鲁静.矩阵变换器新型SVPWM调制策略的仿真[J]电气传动,2011(06):35-39.
[8]苏奎峰,吕强,邓志东,等. TMS320x28xxx原理与开发[M].北京:电子工业出版社,2009.
[9] Han Ju Cha,Prasad N Enjeti. An approach to reduce common-mode voltage in matrix converter[J]. IEEE Transactions on Industry Applications,2003,39(4):1151-1159.
[10]童诚,张兴,张龙云,等.基于DSP和CPLD的单级矩阵变换器设计[J].电力电子技术,2009,43(12):71-73.
[11]吴胜华,钟炎平,赖向东,等.高频链矩阵式正弦波变换器控制策略的改进[J].电工技术学报,2013,28(03):228-233.
[12]齐琛,陈希有.一种简化换流的双级矩阵变换器混沌载波频率调制技术[J].电工技术学报,2013,28(08):149-156.
[13]冯波,林桦,王兴伟,等. AC-DC矩阵变换器空间矢量优化调制模式研究[J].中国电机工程学报,2012,32(33):7-14+169.
[14]唐酿,肖湘宁,陈征,等.矩阵变流器虚拟逆变侧无扇区调制算法[J].中国电机工程学报,2012,32(09):79-85+13.
[15] Li Shengmin,Lu jing,Zhong Yanru. An Over-Modulation in Matrix Converter Based on Limit-Trajectory[J]. Transactions of China electrotechnical society,2012,27(6):110-117.
[16] Yan Z,Jia M,Zhang C,et al. An Integration SPWM Strategy for High-Frequency Link Matrix Converter With Adaptive Commutation in One Step Based on Dere-Coupling Idea[J]. IEEE Transactions on Industrial Electronics,2012,59(1):116-128.
[17]蔡巍,何必,乔鸣忠,等.换序法在矩阵变换器调制策略中的应用及其优化[J].电工技术学报,2012,27(10):135-14.