摘要
逆变器具有滞后特性和负载参数的不确定性,即便采用数字控制技术也难以使逆变电源系统达到稳态的高准确性和强鲁棒性。鉴于此,提出了在逆变器中采用与模型预测算法相结合的内模控制方案,通过检测输出电压一个物理量实现反馈控制。基于理论推导和性能分析,给出了设计过程。仿真和实验结果均表明,应用所提出的控制策略,能使逆变器达到动态响应速度快,鲁棒性强,波形稳态精度高等关键指标。
It＇s difficult to obtain high quality sine waveform and strong robustness of output voltage in the digitalized inverter due to the time-delay phenomenon and load parameter uncertainty.Combined with predictive control algorithm, the internal model control （IMC） is presented for SPWM,and feedback control can be obtained with only output voltage sampled.The theory Reasoning,the performance analysing and the process designing are also introduced.The simulated data and experiment results illustrates the inverter can reach the fast dynamic performance, strong robustness ,good steadystate waveform quality with the control strategy.
出处
《电力电子技术》
CSCD
北大核心
2008年第5期84-86,共3页
Power Electronics
关键词
逆变器
数字控制/内模控制
动态矩阵
预测控制
inverter
digital control / internal model control
dynamic matrix control
predictive control
