基于并联光伏组件外特性的最大功率点跟踪方法

doi:10.19912/j.0254-0096.tynxb.2020-0746

太阳能学报 ›› 2022, Vol. 43 ›› Issue (4): 148-153.DOI: 10.19912/j.0254-0096.tynxb.2020-0746

• 电化学储能安全性与退役动力电池梯次利用关键技术专题 • 上一篇下一篇

基于并联光伏组件外特性的最大功率点跟踪方法

谢路耀¹, 莫晨飞¹, 陈怡²

1.浙江工业大学信息工程学院,杭州 310023;
2.浙江工业大学之江学院,绍兴 312030

收稿日期:2020-07-31 出版日期:2022-04-28 发布日期:2022-10-28
通讯作者: 陈怡（1977—）,女,博士、教授,主要从事电力电子技术方面的研究。eeyzchen@zjut.edu.cn
基金资助:
浙江省基础公益研究计划（LGG20E070004）

MPPT METHOD BASED ON EXTERNAL CHARACTERISTICS OF PARALLELED PV MODULES

Xie Luyao¹, Mo Chenfei¹, Chen Yi²

1. College of Information Engineering, Zhejiang University of Technology, Hangzhou 310023, China;
2. Zhijiang College of Zhejiang University of Technology, Shaoxing 312030, China

Received:2020-07-31 Online:2022-04-28 Published:2022-10-28

摘要/Abstract

摘要： 当阴影条件变化时,并联光伏组件的全局最大功率点（MPP）会随之改变。为了实现太阳能发电最大化,要求最大功率点跟踪（MPPT）方法始终能实时而准确地锁定住并联光伏组件的全局MPP。不同阴影条件下并联光伏组件会呈现不同的外特性特征,如多阶梯的电流电压特性以及多峰值的功率电压特性。基于此现象,该文提出一种基于并联光伏组件外特性的MPPT方法,理论分析及仿真结果都表明：该方法不会陷入局部MPP,在无阴影、静态阴影和动态阴影条件下均具有平稳、快速和准确跟踪全局MPP的能力。

关键词: 光伏组件, 最大功率点跟踪, 电流电压特性, 功率电压特性

Abstract: Global maximum power point（MPP） of paralleled photovoltaic（PV） modules will change with their shading conditions. In order to maximize solar power generation, maximum power point tracking（MPPT） methods are required to lock the global MPP of the paralleled PV modules quickly and accurately in all the time. The paralleled PV modules will show different external characteristics when they are under different shading conditions. For example, the current-voltage characteristics have several steps and the power-voltage characteristics have several peaks. An MPPT method based on the external characteristics of the paralleled PV modules is proposed by utilizing such a phenomenon. Both the theoretical analysis and simulation results show that the proposed method can avoid falling into local MPPs. Moreover, it can track the global MPP smoothly, quickly, and accurately under the conditions of non-shading, static shading, and dynamic shading.

Key words: PV modules, MPPT, current voltage characteristics, power voltage characteristics

中图分类号:

TM615

谢路耀, 莫晨飞, 陈怡. 基于并联光伏组件外特性的最大功率点跟踪方法[J]. 太阳能学报, 2022, 43(4): 148-153.

Xie Luyao, Mo Chenfei, Chen Yi. MPPT METHOD BASED ON EXTERNAL CHARACTERISTICS OF PARALLELED PV MODULES[J]. Acta Energiae Solaris Sinica, 2022, 43(4): 148-153.

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基于并联光伏组件外特性的最大功率点跟踪方法

MPPT METHOD BASED ON EXTERNAL CHARACTERISTICS OF PARALLELED PV MODULES

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