电器与能效管理技术Issue(23)：1-6,18,7.DOI:10.16628/j.cnki.2095-8188.2016.23.001
基于LLC变换器的微功率光伏变换器的迭代式MPPT方法
An Iterative Approach to MPPT in PV Micro-Inverter with LLC Converter
柯清波 1毛行奎1
作者信息
- 1. 福州大学 电气工程与自动化学院, 福建 福州 350108
- 折叠
摘要
Abstract
LLC converter is widely applied to PV micro-inverter due to such good characteristics as high efficiency,broad ranging gain and vast changing load.An MPPT algorithm utilizing iterative approaches was proposed here to improve the imprecise MPPT resulting from imprecise input current detection in the front-end LLC converter stage.Power calculation through detections in back-end inverter stage was handled with interval iterative approaches for precise MPPT.The back stage power calculating,not only offers a more precise calculated power thanks to avoidance of input current detecting error,but also brings a micro-inverter with low cost and less complexity because of removing two isolated detecting circuit on input side of front stage.Finally,a PV micro-inverter of 250 W was built.The prototype indicates that the adopted MPPT is of excellent precision and fast response,thus verifying the validity of the proposed scheme.关键词
光伏发电/微功率逆变器/LLC变换器/迭代式/MPPTKey words
photovoltaic power generation/micro-inverter/LLC converter/iterative/MPPT分类
信息技术与安全科学引用本文复制引用
柯清波,毛行奎..基于LLC变换器的微功率光伏变换器的迭代式MPPT方法[J].电器与能效管理技术,2016,(23):1-6,18,7.
