Abstract More and more applications encompass battery energy storage systems (BESSs) based on Li-ion batteries. However, when designing the power converter of a BESS or when studying the interaction between BESSs and other application components, relying on a real battery makes the process cumbersome, expensive, and time-consuming. Moreover, the battery could even suffer damages. The aim of the work is to show that it is possible to exploit suitable battery models and related parameter identification methodologies, as well as power converters and related control techniques, to develop a hardware device that emulates any given battery. In particular, this paper shows the design and the experimental prototype of a Li-ion battery emulator that is capable of both sourcing and sinking power at kilowatt scale. Unlike other similar devices available in the market or described in the technical literature, the proposed device is low-cost, it injects power into the grid during sink operation, and it can also reproduce battery dynamics. Design criteria are given in the manuscript. The proposed battery emulator has been tested and experimentally validated. The obtained device allows reducing the cost, time, and complexity of performing system tests in Li-ion BESS applications.

中文翻译：

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利用动态建模、参数识别和电力电子技术来实现非耗散锂离子电池硬件仿真器

摘要 越来越多的应用包括基于锂离子电池的电池储能系统（BESSs）。然而，在设计 BESS 的电源转换器或研究 BESS 与其他应用组件之间的交互时，依赖真实的电池会使过程繁琐、昂贵且耗时。此外，电池甚至可能遭受损坏。这项工作的目的是表明可以利用合适的电池模型和相关参数识别方法，以及电源转换器和相关控制技术来开发模拟任何给定电池的硬件设备。特别是，本文展示了锂离子电池仿真器的设计和实验原型，该仿真器能够在千瓦级提供和吸收功率。与市场上可用或技术文献中描述的其他类似设备不同，所提出的设备成本低，它在接收器操作期间向电网注入电力，并且还可以再现电池动态。设计标准在手稿中给出。建议的电池模拟器已经过测试和实验验证。获得的设备可以降低在锂离子 BESS 应用中执行系统测试的成本、时间和复杂性。