单片机产生SPWM波在UPS中的应用:文中介绍了基于PIC16F73单片机产生SPWM控制波形,驱动全桥逆变电路组成的在线式正弦波UPS电源系统,采用电压闭环反馈,提高系统控制精度,给出软件流程图及部分实验波形。
关键词:SPWM;单片机;UPS;电源系统
Application of SPW M W ave Produced by M icrocontroller in UPS
Yang jianping,Uu Chun,Ren guanglin
(Information Engineering Institute of Hubei University of Technology,Wuhan Hubei,430068 China)
Abstract:This paper introduces the method of producing SPWM controlling wave using PIC 16F73 mierocon·troller,to drive the online sine wave power system composed of a ful-bridge inverted circuit.We adopt a voltage feedback of closed loop to improve the precision of system control,The flow chart of the software and parts of experimental waves are also provided.
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