一种多电平逆变器简化SVPWM算法  

Simplified SVPWM Algorithm for Multilevel Inverter

作　　者：崔楠楠 吴斌[2] 徐欢庆 

机构地区：[1]河南能源化工集团永煤公司新桥煤矿,河南永城476600 [2]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《电气传动》2015年第3期45-47,80,共4页Electric Drive

摘　　要：为解决传统空间矢量脉宽调制(SVPWM)算法应用于多电平逆变器时,参考电压矢量定位计算复杂、繁琐的问题,以中点钳位H桥5电平逆变器为例,介绍其拓扑结构及工作原理并提出一种基于αβ坐标系的简化SVPWM算法。该算法利用旋转归一化将其他5个扇区转化到第Ⅰ扇区,使计算量减少了5/6,通过使用一组公式可以快速判断参考电压矢量的准确位置,克服了传统SVPWM算法计算复杂的缺点。同时,该算法可以适用于更高电平。实验结果验证了所提算法的正确性与可行性。To solve the complex and tedious problem of judging the position of the reference voltage vector whenapplied traditional space vector pulse width modulation to multilevel inverter,taken neutral-point clamped H-bridge five-level inverter for instance,introduced its topology and working principle,and proposed a simplified SVPWM algorithmbased on αβ coordinate system. This algorithm transformed other five sectors into the first sector by rotationnormalization which reduced the computation by five sixths,and judged the exact position of the reference voltagevector rapidly by using a group of formulas,so it could overcome the complex computation shortcomings of thetraditional algorithm. Meanwhile,this algorithm could be applied to higher level. Experimental results verify thecorrectness and feasibility of the proposed algorithm.

关 键 词：中点钳位H桥5电平逆变器 空间矢量脉宽调制 参考电压矢量 旋转归一化 通用性 

分 类 号：TM464[电气工程—电器]