摘要
光伏系统的效率问题一直是制约光伏产业发展的关键问题,针对传统光伏系统MPPT方法中存在的问题,提出了一种基于模糊理论对扰动观察法的改进方案。此方法将模糊逻辑控制器应用于实时扰动调整量的计算之中,根据光伏系统的输出状态调整扰动幅度,使系统在响应速度和稳态误差方面得到一定的优化。在Matlab/Simulink中搭建了光伏发电系统的各个仿真模块,通过对比改进前后的仿真结果,验证了此改进能提高响应速度,减小最大功率点附近的稳态震荡。
The efficiency of PV systems has been the key issue constraining the development of the photovoltaic industry. An improved perturb and observe method based on fuzzy logic theory was proposed to solve the problems existing in the traditional MPPT method of PV system. In order to optimize the response speed and state error of the system, a fuzzy logic controller was used to calculate the adjustment amplitude of the disturbance in real time according to the output of PV system. The different simulation modules of PV system were built in Matlab/Simulink.The results show that the improvement of PO method can reduce the steady shock nearby the MPP and response time of the system.
作者
李鑫
解璞
闫良
LI Xin;XIE Pu;YAN Liang(Department of Vehicle and Electrical Engineering, Ordnance Engineering College,shijiazhuang Hebei 050003,chin)
出处
《电源技术》
CAS
CSCD
北大核心
2018年第5期693-696,共4页
Chinese Journal of Power Sources
基金
国家自然科学基金(51307184)
关键词
光伏系统
MPPT
模糊理论
扰动观察法
photovoltaic （PV） system
MPPT
fuzzy logic theory
perturb and observe （P＆O）
