基于变步长爬山法的波浪能发电装置MPPT研究  

On the Maximum Power Point Tracking of Wave Power Generation Device basedon Variable Stepsize Hill Climbing Method

作　　者：张乘承 曹鑫源 潘燕 汪则 杨昭 刘亚蓉 ZHANG Chengcheng;CAO Xinyuan;PAN Yan;WANG Ze;YANG Zhao;LIU Yarong(School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan 430000,China)

机构地区：[1]湖北工业大学电气与电子工程学院,湖北武汉430000

出　　处：《水电与新能源》2023年第9期32-36,共5页Hydropower and New Energy

基　　金：新型振荡浮子式波浪能发电系统设计(基金编号S202110500036)。

摘　　要：针对直驱式波浪发电系统中boost电路的最大功率跟踪(MPPT)问题,首先基于Froude-Krylov理论法对波浪力进行计算,再对直驱式波浪捕获系统以及永磁同步直线电机(PMSLM)进行建模,针对系统的输出特性曲线无法精确建模的特性,提出变步长爬山法对系统进行优化。仿真结果表明,相较于固定步长爬山法,变步长法在一定的误差范围内使发电系统具有全局寻优功能和较高的跟踪速度,其输出功率显著提升且避免陷入局部最优。The maximum power point tracking(MPPT)problem of the boost circuit in direct-drive wave power generation system is studied.Firstly,the wave force is calculated based on Froude-Krylov theory.Then,the direct drive wave capture system and the permanent magnet synchronous linear motor(PMSLM)are modeled.A variable stepsize hill climbing method is adopted to optimize the system as the output characteristic curve of the system cannot be accurately modeled.Simulation results show that the power generation system can be of a global optimization function and higher tracking speed within a certain error range with the variable stepsize method compared to the fixed stepsize method.Its output power is also greatly improved and local optimizations are avoided.

关 键 词：直驱式波浪发电 最大功率跟踪算法 扰动观察法 

分 类 号：P743.2[天文地球—海洋科学]