谐波注入式多相SVPWM及其矢量意义  

Harmonic injected multi-phase SVPWM and its vectorial signification

作　　者：李涛[1] 张晓锋[1] 乔鸣忠[1] 

机构地区：[1]海军工程大学电气工程系,湖北武汉430033

出　　处：《华中科技大学学报（自然科学版）》2012年第11期119-124,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50721063)

摘　　要：从载波角度对多相空间矢量脉宽调制(SVPWM)进行了研究,提出了谐波注入式多相SVPWM算法.建立了零序空间矢量基本函数的一般形式,确定了载波调制中对应于多相SVPWM的零序谐波注入量,通过载波调制的形式等效实现了多相SVPWM.以五相两电平逆变器结构为例,提出了SVPWM中矢量有效的充要条件.论述了多相SVPWM中有效矢量的构成、作用顺序和作用时间的一般性规律.在矢量空间中设定了调制比,得出了相数与线性调制范围的关系.通过实验证明了算法的正确性和有效性.The multi-phase inverter space vector pulsewidth modulation （SVPWM） were investigated from the carrier. An algorithm for carrier-based multi-phase SVPWM was proposed. The fundamental function for the 0th space vector harmonic was deduced. Corresponding to the multi-phase SVPWM, the quantity of the 0th harmonic injected in the form of carrier-based PWM was confirmed, and the multi-phase SVPWM was realized equally by carrier-based form. The necessary and sufficient condi- tions of the vectors in effect were proposed by using the 5-phase inverter as the example. The general rules, including the composing, the action sequence and the action time of the effective vector were re- vealed. The modulation index was enacted in the vector space, the relationship between the number of phases and linear modulation scope was deduced. The correctness and effectiveness of this algorithm was verified by the experimental results.

关 键 词：空间矢量脉宽调制 五相逆变器 谐波注入 开关顺序 调制比 

分 类 号：TM464[电气工程—电器]