Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (5): 1674-1678.doi: 10.19799/j.cnki.2095-4239.2021.0278

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Performance test of flywheel energy storage device

Xing ZHANG1(), Peng RUAN1, Liuli ZHANG1, Gangling TIAN1, Baohong ZHU2   

  1. 1.Pinggao Group Co. Ltd. , Pingdingshan 467001, Henan, China
    2.Beijing Honghui International Energy Technology Development Co. Ltd. , Beijing 101300, China
  • Received:2021-06-22 Revised:2021-07-16 Online:2021-09-05 Published:2021-09-08
  • Contact: Xing ZHANG E-mail:690117463@qq.com

Abstract:

The strategic goals of "carbon peak" and "carbon neutral" are getting more and more attention. Flywheel energy storage, as a physical energy storage method, is being gradually promoted because of its high power density, short response time, long life and other characteristics, and efficiency is one of the important preconditions for industrialization promotion. The charging and discharging efficiency of a 500 kW/100 kW·h flywheel energy storage system was measured using the electric energy measurement method. The charging and discharging cycle of the flywheel energy storage system ranged from 4000 to 6000 to 4000 r/min. In the experiment, the system's charge-discharge cycle efficiency was 83.23%. The motor's electrically generated cycle efficiency was 90.49%. The charge-discharge conversion efficiency of the converter was 92%. The test results showed that the motor's efficiency could increase to 97%, the efficiency of the converter could be 98%, and the efficiency of the charge-discharge cycle could increase to above 87%.

Key words: flywheel energy storage system, electric energy measurement, charging and discharging efficiency

CLC Number: