光伏并网与有源滤波协同控制下的MPPT优化  

MPPT Optimization Under the Collaborative Control of Photovoltaic Grid Connection and Active Filter

作　　者：王小虎 祝龙记[1] 龚传姣 邵华 WANG Xiao-hu;ZHU Long-ji;GONG Chuan-jiao;SHAO Hua(Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学,电气与信息工程学院,安徽淮南232001

出　　处：《电力电子技术》2023年第6期73-76,115,共5页Power Electronics

基　　金：国家自然科学基金(U1610120);安徽理工大学研究生创新基金(2022CX2077)。

摘　　要：光伏并网逆变与有源滤波相结合的协同控制方法,可有效解决光照不足时光伏逆变器利用率低,以及重复增加有源滤波器等问题。在光伏并网逆变与有源滤波协同控制下,最大功率点跟踪(MPPT)控制的电导增量法(INC)由于步长的选择不当,会使得光伏阵列在最大功率点处产生功率损失以及引起输出电流波动,严重影响了协同控制策略中的谐波检测及补偿的精度。因此,此处提出在协同控制策略中改进变步长INC,减少了光伏阵列输出电流的波动,进而改善网侧电能质量。仿真和实验结果验证了所提改进策略的有效性。The combination of photovoltaic grid connection inverter and active filter for collaborative control can effectively solve the problems of low utilization rate of photovoltaic inverter and single function of active filter when the light is insufficient.However,under the collaborative control of photovoltaic grid connection inverter and active filter,the maximum power point tracking(MPPT)control conductance increment method(INC)will cause power loss and output current fluctuation at the maximum power point of photovoltaic array due to improper step size selection,which seriously affects the accuracy of harmonic detection and compensation in the collaborative control strategy.Therefore,the improved variable step INC in the collaborative control strategy is proposed to reduce the fluctuation of photovoltaic array output current and improve the grid side power quality.The simulation and experimental results verify the effectiveness of the proposed improved strategy.

关 键 词：逆变器 光伏并网 有源滤波 

分 类 号：TM464[电气工程—电器]