摘要
针对以输出功率为判断标准的传统的单输入扰动观察法(下文简称为“传统扰动观察法”)存在的弊端,提出一种可用于风光储直流微电网的双输入变步长扰动观察法(下文简称为“双输入MPPT控制策略”),并对风电机组和光伏发电系统分别采用两种控制策略时的占空比、发电效率等进行了对比分析。分析结果显示:相较于传统扰动观察法,风电机组采用双输入MPPT控制策略追踪最大功率点后,扰动步长减小90%的同时追踪时间减少了72.3%;光伏发电系统采用双输入MPPT控制策略追踪最大功率点后,扰动步长减小90%的同时追踪时间减少了39%。仿真结果验证了双输入MPPT控制策略的有效性,该策略适用于电感参与调压的多种场景。
This paper proposes a dual input variable step disturbance observation method(hereinafter referred to as the"dual input MPPT control strategy")that can be used for wind-PV-storage DC microgrid,in response to the drawbacks of the traditional single input disturbance observation method(hereinafter referred to as the"traditional disturbance observation method")based on output power as the judgment criterion.A comparative analysis is conducted on the duty cycle and power generation efficiency of wind turbines and PV power generation systems using two different control strategies.The analysis results show that compared to the traditional disturbance observation method,the wind turbine using the dual input MPPT control strategy to track the maximum power point reduces disturbance step by 90%and tracking time by 72.3%.The PV power generation system adopts a dual input MPPT control strategy to track the maximum power point,which reduces the disturbance step by 90%and the tracking time by 39%.The simulation results have verified the effectiveness of the dual input MPPT control strategy,which is suitable for varions scenarios where inductors participate in voltage regulation.
作者
金叶
邢凯淞
张哲
张岩
Jin Ye;Xing Kaisong;Zhang Zhe;Zhang Yan(School of Electrical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China)
出处
《太阳能》
2024年第3期34-45,共12页
Solar Energy
基金
河北省自然科学基金(E2019208443)
河北省高等学校科学技术研究项目(ZD2021202)
国家级大学生创新创业训练计划项目(202210081012)。
关键词
光伏发电
风电
蓄电池
风电机组
微电网
最大功率点跟踪
扰动观察法
PV power generation
wind power
storage battery
wind turbines
microgrid
MPPT
disturbance observation method
