文档介绍：三相交流异步电机变频调速控制器的设计目录 1绪论........................................................................................................................... .....................4 DSP 的发展趋势.............................................................................. ........................................4 变频调速技术的发展..............................................................................................................5 变频调速系统的方案.......................................... .......................... .......... ........................... ..6 本论文的研究内容.......................................... .................................................... ..................7 2 交流调速原理……............... ……………... …………................ ....................... ...................... ...8 正弦脉宽调制( spwm )控制理论…...................................................................................8 单极性 spwm 控制技术………………...................................................................................9 双极性 spwm 控制技术..........................................................................................................10 spwm 的调制方式….............................................................................................................12 3 总体方案及硬件设计……………………………………………...............................................14 总体方案及硬件框图….......................................................................................................14 系统硬件电路…........................................... .........................................................................1 4 变频主电路........... ............ ......................................................... .................................14 功率驱动电路............................... ........................................................ .........................15 光耦隔离电路........ ............ ......................................................... .................................15 功率驱动电路..........