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基于事件触发的分布式滑模控制用于含非理想源的直流微电网
Event-Triggered Distributed Sliding Mode Control for DC Microgrids With Imperfect Sources
| 作者 | Lei Liu · Yijing Wang · Zhicheng Zhang · Zhiqiang Zuo |
| 期刊 | IEEE Transactions on Industrial Informatics |
| 出版日期 | 2024年9月 |
| 技术分类 | 储能系统技术 |
| 技术标签 | 储能系统 微电网 |
| 相关度评分 | ★★★★ 4.0 / 5.0 |
| 关键词 | 直流微电网 分布式滑模控制 有限时间控制 事件触发策略 电压调节与功率共享 |
语言:
中文摘要
本文针对由多个并联升压变换器构成的直流微电网,在有限通信带宽条件下提出了一种事件触发的分布式滑模控制(SMC)方案。通过摒弃理想电压源假设,将多个升压变换器建模为非理想电压源,并利用滑模控制有效处理其不确定性。设计了有限时间分布式控制框架,实现快速收敛、低稳态误差的电压调节与功率均分。进一步引入事件触发机制,降低高负载任务下的通信带宽开销。仿真与实验结果验证了该方法在节省带宽和抑制扰动方面的有效性。
English Abstract
In this article, an event-triggered distributed sliding mode control (SMC) scheme is developed for dc microgrids composed of multiple boost converters in parallel under limited resource bandwidth. By removing the assumption of ideal voltage sources, the multiple boost converters are modeled as imperfect voltage sources that can be well addressed by SMC. A finite-time control method is suggested to design a distributed control framework for realizing voltage regulation and power sharing with high convergence rate and low steady-state error. Furthermore, an event-triggered strategy is proposed to avoid large bandwidth overhead when carrying out tasks with heavy resource burden. Finally, the effectiveness of bandwidth saving and disturbance rejecting is verified by several comparative simulation results and experimental tests over existing literature.
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SunView 深度解读
该事件触发分布式滑模控制技术对阳光电源ST系列储能变流器和PowerTitan大型储能系统具有重要应用价值。在多模块并联的储能系统中,非理想电压源建模更贴近实际工况,滑模控制可有效应对电池SOC差异、内阻变化等不确定性。事件触发机制可显著降低CAN/以太网通信负载,提升系统可靠性。有限时间收敛特性能加快直流母线电压调节速度,改善功率均分精度,特别适用于大规模储能电站的分布式协调控制。该方案可与现有构网型GFM控制技术结合,增强阳光电源储能系统在弱电网和离网场景下的鲁棒性,同时为iSolarCloud平台提供更优的通信资源管理策略。