摘要
太阳能光伏发电作为一种新能源,易受季节变化、昼夜交替的影响,因此其输出电压很不稳定.鉴于此,本文采用Luo-converter对原始电压进行升压,采用模糊自适应PID控制器控制输出电压的稳定,该控制器利用模糊推理在线调整PID参数,既具有传统PID控制器良好的动态跟踪性能和稳态精度,又具有模糊控制器鲁棒性较强、动态响应快和超调量小的优点.仿真表明,该方法有效地提高了输出电压的稳定性.
As a new energy source,photovoltaic solar energy generation is often prone to be affected by the change of seasons,day and night.Hence,the output voltage of photocoltaic solar energy generation is variable.Accordingly,in this study,Luo-converter is adopted to lift the output voltage,and then a fuzzy self-adaptive PID controller was designed to control the output voltage.This controller can adjust the PID parameters on-line by fuzzy reasoning.The characteristics of dynamic tracking performance and steady-state precision of PID controller,together with strong robustness,good dynamic response and less overshoot of fuzzy controller are obtained.The simulation results show that this approach is effective in improving the stability of the output voltage.
出处
《河北工业大学学报》
CAS
北大核心
2010年第2期41-43,共3页
Journal of Hebei University of Technology
基金
河北省教育厅自然科学研究项目(2009141)
