Design, analysis, and implementation of solar power optimizer for DC distribution system

Shih Ming Chen, Tsorng-Juu Liang, Ke Ren Hu

研究成果: Article同行評審

100 引文 斯高帕斯(Scopus)

摘要

This paper proposes a high step-up solar power optimizer (SPO) that efficiently harvests maximum energy from a photovoltaic (PV) panel then outputs energy to a dc-microgrid. Its structure integrates coupled inductor and switched capacitor technologies to realize high step-up voltage gain. The leakage inductance energy of the coupled inductor can be recycled to reduce voltage stress and power losses. A low voltage rating and low-conduction resistance switch improves system efficiency by employing the incremental conductance method for the maximum power point tracking (MPPT) algorithm. Because of its high tracking accuracy, the method is widely used in the energy harvesting of PV systems. laboratory prototypes of the proposed SPO that have an input voltage range of 20 to 40 V and a maximum PV output power of 400 V/300 W are applied. The highest PV power conversion efficiency is 96.7%. The maximum MPPT accuracy is 99.9%, and the full load average MPPT accuracy is 97.8%. Index Terms-High step-up voltage gain, maximum power point tracking (MPPT), solar power optimizer (SPO).

原文English
頁(從 - 到)1764-1772
頁數9
期刊IEEE Transactions on Power Electronics
28
發行號4
DOIs
出版狀態Published - 2013 4月 1

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程

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