一种单级光伏并网系统MPPT算法的分析

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摘要讨论了光伏电池的非线性输出特性, 分析了单相单级式光伏并网系统的硬件拓扑结构及常见的最大功率跟踪(MPPT)控制方法, 针对传统一阶式MPPT控制算法在单级式光伏并网逆变系统应用中的不足之处, 将模糊PID控制引入到单级式并网发电系统的MPPT控制当中。给出了系统的MPPT控制框图及模糊PID控制器的详细设计过程, 基于PSIM软件搭建仿真平台, 对文中提出的控制算法进行软件仿真, 并最终将算法在实验样机上实现, 仿真及样机实验结果均验证了算法的可行性和有效性。

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	郑必伟
	蔡逢煌
	王武

关键词 ：光伏系统, 最大功率跟踪, 模糊控制, 单级式系统

Abstract：The nonlinear output characteristics of photovoltaic cells, single-phase single-stage PV grid system’s hardware topology and common maximum power point tracking (MPPT) control method are discussed. The fuzzy PID control method is introduced to the MPPT control for the shortcoming of traditional first-order-type MPPT control in the single-stage grid-connected power system. MPPT control block diagram of the system and fuzzy PID controller design process is given in detail. PSIM software-based simulation platform is built, and then the proposed control method is simulated and implemented on the experimental prototype finally. Simulation and experimental results show the feasibility and effectiveness of the scheme.

Key words： Photovoltaic system MPPT fuzzy control single-stage system

收稿日期: 2010-10-25 出版日期: 2014-03-07

PACS:	TM615
	TK514

作者简介: 郑必伟男, 1985年生, 硕士研究生, 主要从事电力电子仿真与智能控制技术研究。蔡逢煌男, 1976年生, 博士, 讲师, 主要从事电力电子控制技术及新能源研究。

引用本文:

郑必伟, 蔡逢煌, 王武. 一种单级光伏并网系统MPPT算法的分析[J]. 电工技术学报, 2011, 26(7): 90-96. Zheng Biwei, Cai Fenghuang, Wang Wu. Analysis and Research of MPPT Algorithm for a Single-Stage PV Grid-Connected Power Generation System. Transactions of China Electrotechnical Society, 2011, 26(7): 90-96.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2011/V26/I7/90

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