一种基于正弦脉宽调制技术的交流电源设计方法

摘要

探讨了一种由正弦脉宽调制技术（SPWM）产生正弦波的方法.在试验装置上利用MOSFET管组成的全桥式逆变电路和单片机80C196，通过查表和在线计算相结合的方法使输出的SPWM波形在闭环电路的作用下经滤波后得到频率稳定、波形精度高的正弦交流电．%A SPWM-based method to creat sinusoidal wave is proposed.In the equipment, the single-chip microprocessor 80C196 and inverter circuit made of MOSFET are used,this method,teh method can result in SPWM wave by consult table and inline calculatation,outputs high precise,stabiliaed-frequency's sinusoidal wave in the function of closed circuit and filter.