arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1701.03065math.OCcs.SYeess.SY
收藏

具有时间变化功率共享的直流微电网鲁棒分布式控制

Robust Distributed Control of DC Microgrids with Time-Varying Power Sharing

University of Illinois at Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校);University of Minnesota(明尼苏达大学)

Mayank Baranwal, Alireza Askarian, Srinivasa M. Salapaka

AI总结:

本文提出了一种用于直流微电网中多直流-直流转换器输出电压调节的鲁棒分布式控制方案,支持时间变化的功率共享,适用于集中式和分布式实现,提升电压调节性能。

摘要:

本文解决了多个连接到微电网的直流/直流转换器的输出电压调节问题,并提出了一种用于不同电源之间功率共享的方案。该架构结构设计使得可以对转换器网络的闭环性能进行可量化分析;分析简化为研究等效单转换器系统的闭环性能。所提出的架构允许不同电源提供功率的比例随时间变化;从而克服了我们之前设计的局限性。此外,所提出的控制框架适用于集中式和分布式实现,即无论是否有共同负载电流(或功率)测量,都可以使用相同的控制架构进行电压调节,而无需修改控制器参数。在集中式情况下,性能随着所有控制器向所有转换器传达所需负载的通信改善而变得可量化地更好;然而在通信缺失时仍能保证可行性。展示了包含电池、光伏和通用电源的案例研究,证明了所规定的最优控制器在电压调节和功率共享方面的增强性能。

英文摘要:

This paper addresses the problem of output voltage regulation for multiple DC/DC converters connected to a microgrid, and prescribes a scheme for sharing power among different sources. This architecture is structured in such a way that it admits quantifiable analysis of the closed-loop performance of the network of converters; the analysis simplifies to studying closed-loop performance of an equivalent {\em single-converter} system. The proposed architecture allows for the proportion in which the sources provide power to vary with time; thus overcoming limitations of our previous designs. Additionally, the proposed control framework is suitable to both centralized and decentralized implementations, i.e., the same control architecture can be employed for voltage regulation irrespective of the availability of common load-current (or power) measurement, without the need to modify controller parameters. The performance becomes quantifiably better with better communication of the demanded load to all the controllers at all the converters (in the centralized case); however guarantees viability when such communication is absent. Case studies comprising of battery, PV and generic sources are presented and demonstrate the enhanced performance of prescribed optimal controllers for voltage regulation and power sharing.

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。

↑