Integration of Photovoltaic with Series/Parallel Connection of Batteries using Modified Johnson Converter

2022 IEEE Global Conference on Computing, Power and Communication Technologies (GlobConPT) Pub Date : 2022-09-23 DOI:10.1109/GlobConPT57482.2022.9938235

Shubha Agrawal, B. S. Reddy, L. Umanand

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Abstract

The present investigation shows the application of a modified Johnson converter for battery charging. The modified Johnson converter can provide the voltage gain of either polarity for different duty ratio ranges. Another advantage of this converter is that it can be used for both stepped up and stepped down output voltage. After analyzing the converter in non-ideal modes of operation, the design aspects for the inductor and capacitor were looked into details. A closed-loop controller is developed using various transfer functions. The hardware results of the converter are shown using a DC voltage source and resistive load. The integration of photovoltaic and batteries using a modified Johnson converter is the highlight of the present investigation. For this integration, a PI controller for current reference control is designed. The step up and step down profile of output voltage is used for charging the batteries in series or parallel. Simulation studies show the charging of the batteries of 96V and 12V, while PV is sourcing power at the maximum power point. The hardware result of the studies is in progress.

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利用改进型约翰逊变流器实现光伏与电池串并联的集成

本文研究了一种改进型约翰逊变换器在电池充电中的应用。改进的约翰逊变换器可以在不同占空比范围内提供任意极性的电压增益。这种转换器的另一个优点是它可以用于升压和降压输出电压。通过对变换器非理想工作模式的分析，对电感和电容的设计进行了详细的探讨。利用各种传递函数设计了闭环控制器。用直流电压源和阻性负载显示了变换器的硬件结果。利用改进的约翰逊变流器集成光伏和电池是目前研究的重点。为此，设计了电流参考控制的PI控制器。输出电压的升压和降压曲线用于串联或并联蓄电池充电。仿真研究表明，96V和12V电池充电时，PV在最大功率点供电。研究的硬件结果正在进行中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 IEEE Global Conference on Computing, Power and Communication Technologies (GlobConPT)

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