摘要
针对传统动态电压恢复器(DVR)控制系统稳态误差大、对电网中扰动不敏感和负载变化时适应能力差等缺点,结合无模型自适应控制(MFAC)和模糊控制的适应性强的特点,设计了模糊无模型自适应控制器,将其应用到DVR控制系统中,对其逆变器进行控制,产生补偿电压以使稳定负载电压。利用Matlab/Simulink对该系统进行仿真研究;仿真结果表明与传统的前馈控制相比,模糊无模型控制更稳定,具有较好的鲁棒性和负载适应能力,并且响应时间较短,应用到DVR控制系统中效果较好。
Aiming at the shortcomings of the bigger steady-state error,insensitive grid disturbance and poor load adaptability of the traditional dynamic voltage restorer（DVR） and combining the strong adaptabilities of the model-free adaptive controller（MFAC） and the fuzzy controller（FZ）,a fuzzy model-free adaptive control DVR is designed and applied to the DVR control system for controlling the inverter and generating the compensation voltage to keep the load voltage stable. The practical simulative study of the MFAC is conducted by software Matlab/Simulink. The simulation results show that compared with the traditional feed-forward control method,the model-free adaptive control method has higher stability,better robustness,better load adaptability,shorter response time,and can be well applied in the DVR control system.
出处
《电气传动自动化》
2016年第6期5-9,共5页
Electric Drive Automation
