基于MPC的直接电流控制光伏最大功率点跟踪  

Maximum power point tracking of PV system based on MPC-DCC

作　　者：吴圳宾 夏祥武 谭新 杨克新 WU Zhenbin;XIA Xiangwu;TAN Xin;YANG Kexin(School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China;China Coal Technology and Engineering Group Shanghai Research Institute,Shanghai 200030,China)

机构地区：[1]上海电力大学电气工程学院,上海200090 [2]中煤科工集团上海有限公司,上海200030

出　　处：《电源技术》2024年第2期331-336,共6页Chinese Journal of Power Sources

基　　金：国家自然科学基金(51907114)。

摘　　要：传统光伏电池最大功率点追踪技术(MPPT)能追踪光伏系统的最大功率点(MPP)并使系统运行在MPP点。但是,在追踪过程中由于追踪速度和追踪精度的矛盾,使得系统在MPP点附近发生振荡。提出一种模型预测直接电流控制(MPC-DCC)和改进了的电导增量最大功率点追踪技术。系统采用Boost升压型电路进行DC-DC控制,先由改进了的电导增量法得到参考电流,再由MPC环节进行直接电流控制。对所研究的系统进行了Simulink仿真和硬件在环实验验证,结果表明该方法能够使用改进电导增量法快速准确找到MPPT最大功率点,并发挥MPC-DCC的控制器带宽及控制精度高的双重优点。The traditional maximum power point trace(MPPT)technology for photovoltaic cell can track the maximum power point(MPP)of the PV system and make the system operate at the MPP point.However,due to the contradiction between the tracking speed and the accuracy during the tracking process,the system may oscillate near the MPP point.A model predictive control-direct current control(MPC-DCC)was proposed,and the improved conductance increment MPPT technology was proposed.A Boost step-up circuit was adopted for DC-DC control.The reference current was obtained by the improved conductance increment method,and the DCC was performed by the MPC.The Simulink simulation and hardware-in-the-loop(HIL)experimental were conducted.The results show that the method can quickly and accurately find the MPPT maximum power point by using the improved conductance increment method,and exert the wide bandwidth and high control accuracy of the MPC-DCC.

关 键 词：模型预测控制 最大功率点跟踪 电导增量法 光伏系统 

分 类 号：TM615[电气工程—电力系统及自动化]