基于DSP的新型SPWM算法研究与实现  

Research and implementation of new SPWM algorithm base on DSP

作　　者：徐超[1] 俞子荣[1] 陈黎娟[1] 

机构地区：[1]南昌航空大学信息工程学院,江西南昌330063

出　　处：《现代电子技术》2013年第24期160-163,共4页Modern Electronics Technique

摘　　要：通过分析各种SPWM采样算法的优点与缺陷,提出了一种新的SPWM采样算法,并采用Matlab软件计算出在该算法下开关器件的开通与关断时刻点,同时将其与规则采样法、切线采样法的时刻点比较。结果表明:新型的采样算法产生的SPWM脉冲比规则采样法、切线采样法更接近自然采样算法产生的脉冲,计算量远远小于自然算法,体现了该新型采样算法的优越性。最后通过DSP验证该新型算法的可行性。A novel SPWM sampling algorithm is proposed on the basis of the analysis on advantages and disadvantages of various SPWM sampling algotithms. The on-off time of switch element obtained by the algorithm was calculated with Matlab soft-ware, which was compared with those of regular sampling algorithm and tangent sampling algotithm. The results show this new sampling algorithm is more accurate than regular sampling algorithm and tangent sampling algorithm, and its calculation quantity is much less than the natural sample algorithm, which reflects the superiority of the new sampling algorithm. The feasibility of the novel algorithm was validated by DSP.

关 键 词：正弦波脉冲宽度调制 自然采样算法 规则采样 切线采样 逆变器 

分 类 号：TN919-34[电子电信—通信与信息系统] TM921.5[电子电信—信息与通信工程]