A free stack DC power module for a battery test system

2016 IEEE International Conference on Industrial Technology (ICIT) Pub Date : 2016-03-14 DOI:10.1109/ICIT.2016.7475008

Chung-Wen Hung, Lung-Chu Lu

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Abstract

In this paper, a free stack DC power module used in a battery test system is proposed and has been successfully implemented. As high-power electrical equipment is more and more popular, the requirements of battery test capabilities should be varied and increased. The power capability of the proposed module can be easily extended by connecting additional modules in parallel to the original battery test system, thus overcoming the high-cost drawback of redesigning a completely new power module just for a larger capability. A qualified power module should provide the constant-voltage and constant-current source modes, in both the standalone and parallel structures. When the system containing multiple power modules runs in the parallel constant-voltage source mode, different modules may output different currents (i.e., current unbalance occurs) because different modules may have different component impedances and different PCB trace impedances. To keep the currents output from different power modules equal, a current balance controller is designed. Experimental results show that the proposed module and the current balance controller work well.

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用于电池测试系统的自由堆叠式直流电源模块

本文提出了一种用于电池测试系统的自由堆栈式直流电源模块，并已成功实现。随着大功率电气设备的日益普及，对电池测试能力的要求也应随之变化和提高。通过在原有的电池测试系统中并联更多的模块，可以很容易地扩展所提出模块的功率能力，从而克服了为提高功率能力而重新设计全新功率模块的高成本弊端。合格的电源模块应能在独立和并联结构中提供恒压和恒流源模式。当包含多个电源模块的系统以并联恒压源模式运行时，不同的模块可能会输出不同的电流（即出现电流不平衡），这是因为不同的模块可能具有不同的元件阻抗和 PCB 线路阻抗。为了保持不同电源模块输出的电流相等，设计了一个电流平衡控制器。实验结果表明，建议的模块和电流平衡控制器运行良好。

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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2016 IEEE International Conference on Industrial Technology (ICIT)

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