基于DSP的单相Boost型数字PFC控制技术  

Control technology of digital Boost-PFC based on DSP

作　　者：李晓明[1] 吕征宇[1] 

机构地区：[1]浙江大学电力电子国家专业实验室,浙江杭州310027

出　　处：《机电工程》2008年第1期108-110,共3页Journal of Mechanical & Electrical Engineering

摘　　要：为了减少电力电子装置对电网引起的谐波污染,在变频器接入电网之前加入PFC电路是一种趋势。讨论了基于TMS320LF2407的全数字控制的单相PFC电路的工作原理,并由此得到了主电路参数的选取原则;建立了单相Boost型数字PFC的小信号动态模型,并分析了基于该模型的数字控制设计方法,给出了设计软件流程;最后搭建了一台样机,在实际电路中实现了数字控制的单相PFC,并得到了较好的实验结果。To reduce the harmonic pollution caused by power electronic devices, transducers should be improved by adding a powe factor cortection （PFC） circuit before accessing into network. The nlain principle of digital PFC based on TMS320LF24007 was discussed, and then values of the circuit＇s parameters were given. A small-signal dynamic model of the system was established, the method for digital control was analyzed, and the designed software flow was given. Finally, an experimental prototype was set up to verify the theory, and the rather good results were obtained.

关 键 词：功率因数校正 数字控制 小信号模型 数字信号处理器 

分 类 号：TN712[电子电信—电路与系统]