摘要
介绍了基于DSP的单相全桥逆变器数字控制系统。详细论述了利用数字信号处理器TMS320LF2407产生SPWM波形和实现双闭环PI控制的算法,并给出了其实现原理及软件流程。针对同相供电系统[1]中UPFC直流侧电压随机波动的特点,提出了通过动态的调整调制波高度来控制SPWM输出电压波形的方法。仿真结果验证了设计的可行性。
The digital control system of single-phase full-bridge is introduced. The arithmetic of SPWM and double closed loop PI, which is based on the digital signal processor TMS320LF2407, is expatiated on. The principle and software flow chart is given. Taking account of the fluctuant DC voltage of UPFC in traction power supply system without phase exchange, a dynamic SPWM method is proposed by changing the amplitude of modulate wave. The feasibility of the design is verified by the simulation result.
出处
《微计算机信息》
北大核心
2008年第32期184-186,共3页
Control & Automation
基金
电力电子关键器件及重大装备研制颁发部门:中华人民共和国科学技术部(2007BAA12B05)
