一种应用于多电平变换器的新型SVPWM调制算法
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摘要
首先分析了单相级联3-H桥单元电压矢量的输出,并比较传统的空间矢量脉宽调制(SVPWM),得出新型单相SVPWM调制算法,进而推导了三相级联N电平变换器的SVPWM调制算法,并叙述了三相SVPWM调制算法的具体实现过程。继而对级联多电平变换器所涉及的功率单元输出功率不平衡等问题详细进行了分析。最后通过仿真和实验的结果进行了论证。
The single-phase cascade 3-H bridge unit output voltage vector was analyzed, comparing with the traditional SVPWM modulation, a new type of single phase SVPWM modulation algorithm was proposed, the three-phase SVPWM modulation algorithm cascade N level converter was derived, and the specific implementation process of three-phase SVPWM modulation algorithm was described. The cascade multilevel converter power unit involved in the problems such as unbalanced output power was analyzed. Finally, the simulation and experimental results demonstrate the narrative.
The single-phase cascade 3-H bridge unit output voltage vector was analyzed, comparing with the traditional SVPWM modulation, a new type of single phase SVPWM modulation algorithm was proposed, the three-phase SVPWM modulation algorithm cascade N level converter was derived, and the specific implementation process of three-phase SVPWM modulation algorithm was described. The cascade multilevel converter power unit involved in the problems such as unbalanced output power was analyzed. Finally, the simulation and experimental results demonstrate the narrative.
引文
[1]史喆,石新春.级联逆变器的一种新型SVPWM方法[J].电工技术学报,2006(9):81-87.
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[6]王立乔,姜旭东.单相多电平逆变器空间矢量调制技术及其应用[J].电工技术学报,2011,26(4):115-117.
[7]刘铮,王翠,彭永进,等.级联多电平逆变器空间矢量调制算法零序电压分布及优化算法[J].电工技术学报,2008,23(12):92-98.
[2]宋文胜,冯晓云.一种单相空间矢量脉宽调制优化方法[J].电工技术报,2005,10(3):33-34,97.
[3]LAI J S,PENG F Z.Multilevel converters a new breed of power converters[J].IEEE Transactions on Industry Application,1996,32(3):509-517.
[4]李建林,朱颖.风力发电系统中大功率变流器的应用[J].高电压术,2009,35(1):169-175.
[5]李建林,赵栋利,赵斌,等.载波相移SPWM级联H型变流器及其在有源电力滤波器中的应用[J].中国电机工程学报,2006,26(10):109-113.
[6]王立乔,姜旭东.单相多电平逆变器空间矢量调制技术及其应用[J].电工技术学报,2011,26(4):115-117.
[7]刘铮,王翠,彭永进,等.级联多电平逆变器空间矢量调制算法零序电压分布及优化算法[J].电工技术学报,2008,23(12):92-98.