摘要
简要分析了传统的PFC数字控制算法的特点和不足,在此基础上对一种新型的PFC数字控制算法——占空比预估法进行了详细的理论推导。此算法具有运算量相对较小,动态性能好等优点,特别适合高频场合。通过MATLAB仿真,验证了算法的正确性,并得到系统的控制参数初始值。然后,采用Freescale公司的MC56F8323DSP芯片,设计了一套PFC数字控制系统,对新算法进行实现。
The features and deficiencies of the conventional PFC digital control solution are analysed, Based on those analyses, a new PFC digital control solution named duty cycle forecasting and it＇s detailed theoretical derivation are presented. This new type solution have some own merits, such as low calculation, nice dynamic condition and so on. It is particularly suitable for high frequency situation. A PFC digital control system is designed with the DSP chip MCfi6F8323 produced by Freescale. Tile system realized the new algorithm, And the coirect of this new algorithm is proved by the simulation of MATLAB.
出处
《电源技术应用》
2007年第5期17-20,共4页
Power Supply Technologles and Applications
