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| Efficient Test on the Charging and Discharging of the Flywheel Energy Storage System |
| Dai Xingjian, Yu Han, Li Yiliang |
| Tsinghua University Beijing 100084 China |
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Abstract The efficiency of charging-discharging cycle of the 500Wh flywheel energy storage system was tested through the electric energy measurement method. In the charging model, the flywheel speeds from 12 000 r/min up to 36 000 r/min. The speed decreases from 36 000 r/min down to 12 000 r/min in the discharging model. The test showed that 49% of the energy was wasted by the motor and the motor control system. About ten percent of the energy become the bearing and wind friction loss. It is difficult to make the efficiency of the charging-discharging grow up to 80% even if both the motor and the controller efficiency was increased to 95%. The power consuming of the assistant equipment for the running of flywheel energy storage system was considered in the impro- vement of the efficiency of the flywheel energy storage system. It is concluded that the aerospace conditions are very suitable for the running of the flywheel energy storage system in high efficiency.
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Received: 10 June 2007
Published: 12 February 2014
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作者简介
戴兴建 男, 1970年生, 博士, 副研究员, 从事热力发动机, 高速离心机和储能飞轮技术研究。
于 涵 男, 1978年生, 博士, 助理研究员, 主要从事高速离心机和储能飞轮结构设计、复合材料强度研究及试验等。 |
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2009, Vol. 24 
