基于热能储存的蒸汽压缩制冷系统的建模与冷却功率控制
Modelling and cooling power control of a TES-backed-up vapour-compression refrigeration system
AI总结：
本研究针对基于相变材料的热能储存与蒸汽压缩制冷联合系统，提出解耦控制策略，通过前馈串级与PI调节器实现快速可靠的冷却功率跟踪，支持经济高效的高层调度。
摘要：
本文研究了基于相变材料（PCM）的热能储存（TES）系统与蒸汽压缩制冷设备相结合的建模、功率控制和优化问题。针对一种新型的基于PCM的TES储罐设计及其与现有制冷系统的互联，首先研究了联合动态建模，探讨了互联系统中并存的不同时间尺度。根据TES储罐作为冷能缓冲器以解耦冷却需求与生产的预期用途，定义了多种运行模式，同时计算了静态特性和功率限制，结果表明主要冷却功率（TES充/放电功率及蒸发器处的直接功率生产）之间存在高度耦合。在此基础上，提出了一种解耦控制策略，其中底层控制器采用简单的PI调节器，制冷剂/二次侧质量流量被视为虚拟操纵变量，并应用基于前馈的串级策略。通过包含所有运行模式的全面仿真评估了控制性能，结果表明参考跟踪快速且可靠，足以应对高层调度策略，其中主要冷却功率的参考值旨在基于经济性和效率标准进行设定。
英文摘要：
This work addresses the modelling, power control, and optimization of a thermal energy storage (TES) system combined with a vapour-compression refrigeration facility based on phase change materials (PCM). Given a novel design of a PCM-based TES tank and its interconnection with an existing refrigeration system, the joint dynamic modelling is first studied, exploring the different time scales that coexist at the interconnected system. Diverse operating modes are defined, according to the intended use of the TES tank as a cold-energy buffer to decouple cooling demand and production, whereas the static characteristic and power limits are calculated and show the high coupling between the main cooling powers involved (TES charging/discharging power, and direct power production at the evaporator). In this light, a decoupling control strategy is proposed, where the low-level controllers are simply PI regulators and the refrigerant/secondary mass flows are considered as virtual manipulated variables, applying a feedforward-based cascade strategy. The control performance is evaluated through a thorough simulation that includes all operating modes, where the reference tracking is shown to be fast and reliable enough to address high-level scheduling strategies, where the references on the main cooling powers are intended to be imposed considering economic and efficiency criteria.
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。
