A control strategy to enhance the life time of the battery in a stand-alone PV system with DC loads

被引：21

作者：

Maheswari, Lakshmanan ^{[1
]}

Rao, P. Srinivasa ^{[2
]}

Sivakumaran, N. ^{[1
]}

Ilango, G. Saravana ^{[2
]}

Nagamani, Chilakapati ^{[2
]}

机构：

[1] Natl Inst Technol, Dept Instrumentat & Control Engn, Tiruchirappalli 620015, Tamil Nadu, India

[2] Natl Inst Technol, Dept Elect & Elect Engn, Tiruchirappalli 620015, Tamil Nadu, India

来源：

IET POWER ELECTRONICS | 2017年 / 10卷 / 09期

关键词：

photovoltaic power systems; secondary cells; voltage control; supercapacitors; constant current sources; power control; battery; stand-alone photovoltaic system; energy storage devices; intermittent fluctuations; PV power; load power; DC bus voltage; constant voltage sources; supercapacitor converter; constant current source; charge-discharge profile; Z-SOURCE INVERTER; POWER; DESIGN; MANAGEMENT; CONVERTER;

D O I：

10.1049/iet-pel.2016.0735

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：

This study proposes a unique control strategy to enhance the life time of the battery in a stand-alone photovoltaic (PV) system employing energy storage devices such as battery and super capacitor. The intermittent fluctuations in PV power and load power affect the DC bus voltage leading to a random and frequent charging/discharging profile of the battery since the controlling converters are operated as constant voltage sources. To overcome this drawback, the supercapacitor converter is commanded as a constant voltage source so as to adapt to varying load conditions and the battery converter is commanded as a constant current source. This strategy helps to decouple the power imbalances from the charge-discharge profile of battery, thereby contributing to the improved battery life. The detailed experimental results are presented. Further, the proposed control strategy is tested and validated under various scenarios.

引用

页码：1087 / 1094

页数：8

共 32 条

[1] RETRACTED: Energy storage system and demand response program effects on stochastic energy procurement of large consumers considering renewable generation (Retracted article. See vol. 14, pg. 6040, 2020) [J].