直接占空比扰动的新型光伏自适应爬山法  

Novel Adaptive Hill Climbing Algorithm for PV Power System with Direct Duty Cycle Perturbation

作　　者：方波[1,2] 李明[1] 康龙云[2,3] 

机构地区：[1]许昌学院电气信息工程学院,许昌461000 [2]华南理工大学电力学院,广州510640 [3]广东省绿色能源技术重点实验室,广州510640

出　　处：《电力系统及其自动化学报》2014年第9期30-34,共5页Proceedings of the CSU-EPSA

基　　金：河南省科技攻关项目(112102310536);许昌市科技攻关项目(140203027);河南省高校科技创新团队项目(14IRTSPHN022)

摘　　要：为了改进光伏发电最大功率点跟踪的控制性能,通过光伏阵列建模和全桥变换器稳态建模,对直接占空比扰动控制模式进行了原理分析,建立了光伏功率、电压和占空比之间的定量函数关系,给出了直接占空比扰动控制的控制机理,并以此为依据,提出了一种新型变步长自适应爬山法控制策略。采用PSIM仿真平台对基于直接占空比扰动的自适应爬山法的光伏发电系统进行了仿真,对比仿真实验结果验证了新型自适应爬山法的有效性和优越性。In order to improve the control performance of maximum power point tracking（MPPT） in photovoltaic（PV） power system,the principle of direct duty cycle perturbation control mode is analyzed,and the quantitative functional relationships with PV power,voltage and duty cycle are established by means of modeling the steady-state PV array and the full-bridge converter,then the control principle of direct duty cycle perturbation is given.Based on this one,a novel control algorithm named adaptive variable step hill climbing algorithm is proposed.The theoretical analysis is verified by PSIM simulation and the PV power system based on the new method proposed above is simulated.The simulation contrast results show that the new adaptive hill climbing method is practicable and superior.

关 键 词：光伏 直接占空比扰动 自适应爬山法 最大功率点跟踪 仿真 

分 类 号：TM615[电气工程—电力系统及自动化]