摘要
针对双级变换多特性功率变换器,介绍数字控制对系统的作用和影响,分析数字预测控制原理,提出将预测控制与常规PID控制相结合的新型数字预估控制算法,并应用于以TMS320LF2407A为控制核心的双级变换多特性电源样机。实验表明,新型预测控制算法对存在控制滞后的数字化系统,具有较好的控制能力和动态响应,样机运行良好,可稳定输出直流、交流变频变幅等多种波形组合。
Aiming at multi-characteristic double-stage power converter,the impact of digital control to the system was introduced,the principle of digital predictive control was analyzed,and a new digital predictive control algorithm combined with predictive control and PID control was proposed and applied to double-stage power converter prototype centering on TMS320LF2407A.The experiment results show that the new algorithm has better control ability and dynamic response to the digital system with control-delay.The prototype operates well and stably outputs DC/AC waveforms of frequency and amplitude conversion.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2011年第12期46-50,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(50977033)
"十一五"国家科技支撑计划重大项目(2008BAF34B09)
广东省自然科学基金项目(7004271)~~
关键词
多特性
双级功率变换器
数字预测控制
PID控制
控制时延
multi characteristic
double-stage power converter
digital predictive control
PID control
control-delay
