A New MPPT Method for Low-Power Solar Energy Harvesting

被引：141

作者：

Lopez-Lapena, Oscar ^{[1
]}

Teresa Penella, Maria ^{[1
]}

Gasulla, Manel ^{[1
]}

机构：

[1] Univ Politecn Cataluna, Instrumentat Sensors & Interfaces Grp, Barcelona 08860, Spain

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2010年 / 57卷 / 09期

关键词：

Energy harvesting; maximum power point tracking (MPPT); solar cells; wireless sensor networks (WSNs); WIRELESS; SYSTEM;

D O I：

10.1109/TIE.2009.2037653

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper describes a new maximum-power-point-tracking (MPPT) method focused on low-power (< 1 W) photovoltaic (PV) panels. The static and dynamic performance is theoretically analyzed, and design criteria are provided. A prototype was implemented with a 500-mW PV panel, a commercial boost converter, and low-power components for the MPPT controller. Laboratory measurements were performed to assess the effectiveness of the proposed method. Tracking efficiency was higher than 99.6%. The overall efficiency was higher than 92% for a PV panel power higher than 100 mW. This is, in part, feasible due to the low power consumption of the MPPT controller, which was kept lower than 350 mu W. The time response of the tracking circuit was tested to be around 1 s. Field measurements showed energy gains higher than 10.3% with respect to a direct-coupled solution for an ambient temperature of 26 degrees C. Higher gains are expected for lower temperatures.

引用

页码：3129 / 3138

页数：10

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