A Hybrid Energy Storage System Based on Compressed Air and Supercapacitors With Maximum Efficiency Point Tracking (MEPT)
A Hybrid Energy Storage System Based on Compressed Air and Supercapacitors With Maximum Efficiency Point Tracking (MEPT)
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DOI：
10.1109/tie.2006.878323
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发表时间：
2006-08
影响因子：
7.7
通讯作者：
S. Lemofouet;A. Rufer
中科院分区：
文献类型：
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作者：
S. Lemofouet;A. Rufer
除了基于水电技术的大容量存储设施外，电化学解决方案也是当今可再生能源存储支持的候选方案。然而，电池的可持续性和有限的生命周期往往是抑制因素。本文提出了一种高生命周期的混合储能系统，该系统主要基于压缩空气，其中存储和放电在最大效率条件下完成。当最大效率条件施加转换功率的水平时，将间歇时间调制操作模式应用于热力学转换器以获得可变的转换平均功率。在用作滤波器的超级电容辅助存储装置的帮助下，实现了平滑可变的输出功率。本文介绍了系统的概念，电力电子接口电路，特别是最大效率点跟踪（MEPT）算法和策略，用于改变输出功率。此外，本文还介绍了高效存储系统的特点，其中气动机械被替换为一个油-液-气转换器，这是在等温条件下使用。实际结果也提出，这是记录从一个小功率气动马达耦合到一个小直流发电机，以及从第一个原型的最后液压气动系统
In addition to the high-capacity storage facilities based on hydropower technologies, electrochemical solutions are today's candidate for storage for renewable energy sources support. However, sustainability and limited life cycles of batteries are often inhibiting factors. This paper presents a hybrid energy storage system with high life cycle, which is mainly based on compressed air, where the storage and discharge are done within maximum efficiency conditions. As the maximum efficiency conditions impose the level of converted power, an intermittent time-modulated operation mode is applied to the thermodynamic converter to obtain a variable converted mean power. A smoothly variable output power is achieved with the help of a supercapacitive auxiliary storage device used as a filter. This paper describes the concept of the system, the power-electronic interface circuits, and especially the maximum efficiency point tracking (MEPT) algorithm and the strategy used to vary the output power. In addition, this paper presents the characteristics of high-efficiency storage systems where the pneumatic machine is replaced by an oil-hydraulic and pneumatic converter, which is used under isothermal conditions. Practical results are also presented, which are recorded from a low-power pneumatic motor coupled to a small dc generator as well as from the first prototype of the final hydropneumatic system