一种基于双向变换器的太阳能电池储能供电系统
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摘要
为了解决太阳能供电系统中输出效率低的问题,提出了一种基于双向变换器的电池储能供电系统。该系统由微控制器模块、DC-DC变换器模块和开关模块组成。微控制器模块能够检测和调整输入输出电流,DC-DC变换器模块可以实现输入端到输出端的电压变换,开关模块能够改变变换器两端能量传输方向。实验表明,当充电电流为2 A时,其效率可达97.25%;当放电电流为1 A时,效率可达95.3%。电流步进调整值小于0.05 A。
In order to solve the problem of low output efficiency in solar power supply system, a battery energy storage power supply system based on bidirectional converter is proposed. The system consists of a microcontroller module, a DC-DC converter mod-ule and switch module. The microcontroller module can detect and adjust the input and output current, and the DC-DC converter module can realize the voltage conversion from the input to the output. The switching module can change the direction of the energy transfer at both ends of the converter. The experimental results prove that the efficiency can reach 97.25 % when the charging current is 2 A. When the discharge current is 1 A, the efficiency can reach 95. 3 %. The current step adjustment value is less than 0.05 A.
In order to solve the problem of low output efficiency in solar power supply system, a battery energy storage power supply system based on bidirectional converter is proposed. The system consists of a microcontroller module, a DC-DC converter mod-ule and switch module. The microcontroller module can detect and adjust the input and output current, and the DC-DC converter module can realize the voltage conversion from the input to the output. The switching module can change the direction of the energy transfer at both ends of the converter. The experimental results prove that the efficiency can reach 97.25 % when the charging current is 2 A. When the discharge current is 1 A, the efficiency can reach 95. 3 %. The current step adjustment value is less than 0.05 A.
引文
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[3]徐进,帅立国.一种新型软开关DC-DCPWM升压变换器设计[J].电子器件,2016,39(2):312-319.
[4]刘庆新,程树英.双Buck太阳能LED路灯照明控制系统[J].电子技术应用,2011,37(5):142-145.
[5]ALI U S.A modified maximum power point tracking control for Bi-directional Z-Source DC-DC converter based solar electric vehicle[J].Applied Mechanics and Materials,2015,4123(787):828-832.
[6]陈显东,曹太强,黎凡森.一种新型交错并联型buck变换器[J].电子技术应用,2017,43(7):153-156.
[7]张斌,李宏.锂电池化成用双向DC-DC变换器设计[J].微型机与应用,2015,34(9):40-42,53.
[8]MAZUREK G.Performance study of solar power source for wireless systems[J].International Journal of Electronics and Telecommunications,2013,59(3):271-276.