n电平空间矢量算法的优化及其硬件实现  

Optimized Algorithm for n-Level Space Vector PWM and Its Hardware Realization

作　　者：胡海兵[1] 姚文熙[2] 吕征宇[2] 

机构地区：[1]南京航空航天大学航空电源重点实验室,江苏南京210016 [2]浙江大学电力电子国家专业实验室,浙江杭州310027

出　　处：《电子学报》2008年第12期2357-2362,共6页Acta Electronica Sinica

基　　金：国家自然科学基金重大项目(No.50237030ZD)

摘　　要：本文提出了一种适合硬件实现的多电平空间矢量调制算法,该算法利用空间矢量图的几何对称性来实现算法优化.多电平空间矢量图可以划分为几何形状完全一致的六大扇区,优化算法通过扇区之间的对应关系把矢量调制算法的计算集中在一个扇区内完成.与传统的空间矢量算法相比,计算量减少为原来的1/6,更适合用硬件实现.为了设计出的硬件电路具有通用性,本文给出了具体设计过程.最后,文章以两电平和三电平IP(Intellectual Property)核的设计为实例验证了优化算法的正确性和有效性.This paper presented a generalized algorithm of n-level space vector PWM suitable for hardware implementation. The optimized algorithm was proposed based on the geometrical symmetry of the n-level space vector diagram, which can be split into six sectors with same shape. Through corresponding relationships between sectors, the algorithm carried out all the computation effort of space vector PWM in one specific sector. Compared with the conventional algorithm, the proposed algorithm reduced the computation amount to one sixth of the conventional one, which indicates the proposed one is more suitable to hardware implementation. For flexibility and versatility, some key design considerations were given in hardware implementation. Finally, two design examples-two-level SVPWM IP core and three-level SVPWM IP core were demonstrated to verify the correctness and validity of the proposed algorithm.

关 键 词：空间矢量调制 多电平 可编程逻辑阵列 知识产权 

分 类 号：TM76[电气工程—电力系统及自动化] TM646