arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2202.11757eess.SYcs.SY
收藏

动态可重构电池的降质控制

Degradation-Reducing Control for Dynamically Reconfigurable Batteries

Tomas Kacetl, Jan Kacetl, Jinyang Fang, Malte Jaensch, Stefan Goetz

摘要:

级联电路,如模块化多电平转换器(MMC)提供了有吸引力的质量在可重构电池的应用。与传统的硬接线直流电池组相比,MMC拓扑结构用交流电流加载模块,这可能导致电池的额外老化。最近的研究表明,这种电池老化发生在低频负载纹波,并在高频几乎消失。MMC电池控制的最新技术集中在各个模块的充电状态和温度平衡上。以前抑制纹波的方法依赖于缓慢的反馈回路和低动态,这往往会在模块负载中形成低频模式,从而对其老化产生负面影响。本文提出了一种新的模块电流导向的高带宽控制技术,最大限度地减少在模块负载谱中的低频分量。该控制方法尊重与模块数据采集相关的限制,并使用观测技术增强反馈带宽。我们验证了所提出的方法实验上的实验室设置,并估计对电池单元的影响。

英文摘要:

Cascaded circuits such as modular multilevel con-verters (MMC) offer attractive qualities in reconfigurable battery applications. In contrast to conventional hard-wired dc battery packs, the MMC topology loads modules with ac current, which may lead to additional ageing of batteries. As recent studies reveal, such ageing of batteries occurs at low-frequency load ripple, and almost vanishes at high frequencies. State of the art in MMC bat-tery control focuses on state of charge and temperature balancing of individual modules. Previous methods to suppress ripple rely on slow feedback loops and low dynamics, which tends to form low-frequency patterns in the module load that negatively contribute to their ageing. This paper presents a novel module-current-oriented high-bandwidth control technique which minimizes low-frequency components in the module load spectrum. The control method respects limitations related to module data acquisition and enhanc-es the feedback bandwidth using observation techniques. We verify the proposed method experimentally on a laboratory setup and estimate the influence on the battery cells.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑