摘要
针对单一扰动观察法存在跟踪速度和稳态震荡难以兼顾问题,提出了一种恒定电压法结合变步长扰动观察法的复合最大功率点跟踪控制算法。在启动初始期间通过恒定电压法迅速捕获到最大功率点附近位置,然后利用变步长扰动观察法对最大功率点进行精确定位。Simulink仿真表明:最大功率点跟踪控制策略不但具有较好的动态特性,而且稳态功率波动很小,实现了又快又稳的控制目标。
As the single disturbance observation method could hardly take into account both tracking speed and steady-state oscillation,a composite maximum power point tracking control algorithm based on the constant voltage method combined with variable step size disturbance observation method was proposed.The rough position of the maximum power point was quickly captured in the constant voltage method during the initial startup period.Then,the maximum power point was located accurately in the variable step disturbance observation method.Simulink simulation indicated that the proposed maximum power point tracking control strategy did not only have good dynamic characteristics,but also had small steady-state power fluctuation,thus attaining the target of fast,stable control.
作者
占鑫
刘世良
王雄
张滈辰
Zhan Xin;Liu Shiliang;Wang Xiong;Zhang Haochen(Qinghai Green Energy Data Co., Ltd., Xining Qinghai 810000, China;State Grid Qinghai Electric Power Co. Information Communication Co., Xining Qinghai 810008, China)
出处
《电气自动化》
2021年第1期51-54,共4页
Electrical Automation
基金
国网青海省电力公司科技项目(522814170006)。
关键词
跟踪速度
恒定电压法
变步长
功率波动
tracking speed
constant voltage method
variable step size
power fluctuation