Analysis of Unified Output MPPT Control in Subpanel PV Converter System

被引：64

作者：

Wang, Feng ^{[1
]}

Wu, Xinke ^{[2
]}

Lee, Fred C. ^{[3
]}

Wang, Zijian ^{[4
]}

Kong, Pengju ^{[5
]}

Zhuo, Fang ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China

[2] Zhejiang Univ, Dept Elect Engn, Hangzhou 310058, Zhejiang, Peoples R China

[3] Virginia Tech, Ctr Power Elect Syst, Blacksburg, VA 24061 USA

[4] Linear Technol Corp, Milpitas, CA 95035 USA

[5] iWatt Inc, Santa Clara, CA 95008 USA

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2014年 / 29卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Photovoltaic (PV) system; subpanel MPPT (SPMC) converter; unified output control; POWER POINT TRACKING; OPTIMIZATION;

D O I：

10.1109/TPEL.2013.2262102

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Photovoltaic (PV) systems frequently suffer disproportionate impacts on energy production due to mismatch cases. To remedy this, academia proposed a distributed max power point tracking (MPPT) solution and has been implemented commercially. Taking the trend of the "distributed MPPT" concept a step further, this paper discusses and analyzes an MPPT converter that connects to each PV cell string, called a subpanel MPPT converter (SPMC), to better address the real-world mismatch issues. The SPMC system with a unified output MPPT control structure is also proposed in order to reduce the cost and simplify the distributed MPPT system. The proposal saves A/D units, current sensors, and MPPT controllers on the premise of guaranteeing that the SPMC is working on its optimal maximum power point regardless of the mismatch case. This is favorable for the further integration and makes the whole SPMC system less expensive and easier to realize. Finally, the effectiveness of the proposal is confirmed experimentally.

引用

页码：1275 / 1284

页数：10

共 41 条

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