| Compressed air energy storage (CAES) system is a mature energy storage method gradually. Because of its free-pollution, long service life, high efficiency, and low investment cost, it gets more and more people’s attention. There have established several compressed air energy storage power stations in foreign countries, and they all are large scale energy storage systems. Large scale energy storage system is affected by the geographical position, which great limits its development. The development of small and micro-small scale compressed air energy storage (MS-CAES) systems mostly are in the stage of theoretical research, and they have not been put into commercial operation. Compared with conventional CAES power plant, MS-CAES system needn’t to burn fossil fuels, truly realizing zero emissions. It uses high-pressure gas storage device to store air, no restriction on the geographical environment, and flexible in use. Hence, it can be used as backup power supply, micro smart grid and independent power supply in remote networks. Obviously, research on MS-CAES system has practical significance.The paper mainly researches a new compressed air energy storage method, micro-small scale compressed air energy storage (MS-CAES). The technology has high compression efficiency, quick response. Key technology is the control of the pump, control strategies of the pump will greatly affect the compression process of system and the system’s overall efficiency. Firstly, the paper studies the current situations and development trends of compressed air energy storage systems at home and abroad. Secondly, analyzes the characteristics of MS-CAES technologies. Introduce the MS-CASE studied in this paper, and study the characteristic of the pump and motor of the system. Thirdly, the paper researches the control strategy of compressed air energy storage, including the maximum power point tracking(MPPT) and maximum efficiency point tracking(MEPT), compare the effects of the characteristics of the system different on different control strategy, mainly analyze the power and efficiency. Finally, this paper based on Matlab/Simulink using Energetic Macroscopic Representation to build MS-CASE system model. The simulations verify the correctness of the theoretical analysis. In addition, design an experimental platform to carry out experiments under laboratory condition. |
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