1 MW/60 MJ飞轮储能系统设计与实验研究

doi:10.19595/j.cnki.1000-6753.tces.161486

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Abstract

The balancing on the shaft of flywheel-motor,the charging/discharging experiments,loss and efficiency testing was carried out on a 1 MW/60 MJ flywheel energy storage power system developed for the hybrid power system of an oil drill rig.The kinetic energy with 60 MJ was stored by a high strength alloy steel flywheel with variable-cross-section.The permanent magnetic bearing bore 97% of weight of the vertical shaft of the flywheel and motor.The permanent magnets were imbedded in the rotor laminated of silicon-steel sheets with grille structure for safe rotationat high speeds.The control hardware and software was developed for the charging in power of 100-300 kW and discharging in power of 500-1 000 kW.Control strategies such as flux-weakening,double closed-loop of speed and current,voltage closed-loop and current feedforwardwere used in the charging and discharging of the permanent magnet motor.The vibration displacement was decreased to lower than 0.07 mm after field balancing on the flywheel-motor bearing system.The energy storage efficiency is 86-88% in one charging/discharging cycle in the running of the flywheel energy storage system.

Key words： Flywheel energy storage mechanical design power electronics motor control

Received: 18 September 2016 Published: 10 November 2017

PACS:

TM315

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	Dai Xingjian
	Jiang Xinjian
	Wang Qiunan
	Wang Yong
	Wang Shanming

Cite this article:

Dai Xingjian,Jiang Xinjian,Wang Qiunan等. The Design and Testing of a 1 MW/60 MJ Flywheel Energy Storage Power System[J]. Transactions of China Electrotechnical Society, 2017, 32(21): 169-175.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.161486 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I21/169

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