Experimental research on DC power recycling system in the subway based on the magnetically suspended energy-storaged flywheel array

doi:10.19799/j.cnki.2095-4239.2020.0096

Abstract

Abstract:

For the problem of the regenerative braking energy in the rail transit, some research on a kind of magnetically suspended flywheel array-based energy recovery system is done. Through analysis on the structure of the traction power supply system, the braking methods and energy consumption during the rail pulling in are introduced. And then the contrast results of the energy consumption are provided before and after adding the energy-storaged equipment. Based on this, a kind of the flywheel energy-storaged array-based DC power recycling system is designed which can be used to achieve a fast braking power absorption during pulling in and power compensation during pulling out of the rail train. With the argumentation of the flywheel key performance indices, the parallel strategy and the capacity assignment are demonstrated. Finally, the experimental platform of the flywheel energy-storaged array is developed with the real test system. The mutual-driven charging and discharging results can be able to demonstrate the effectiveness of the designed.

Key words: magnetically suspended flywheel array-based energy storage, DC power recycling system, mutual-driven charging-discharging control

CLC Number:

TM 341

LIU Ping, LI Shusheng, LI Guangjun, DAI Xingjian. Experimental research on DC power recycling system in the subway based on the magnetically suspended energy-storaged flywheel array[J]. Energy Storage Science and Technology, 2020, 9(3): 910-917.

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性能指标	技术数据	性能指标	技术数据
型号	FW2503	过载能力	120%连续
额定功率	250 kW	放电深度	85%
储电量	3.0 kW·h	后背时间	36.72 s
电流参数	200 A	冷却方式	强迫风冷
电压参数	1500VDC	运行温度	-20～40 ℃
额定效率	96%	储存温度	-30～50 ℃
功率因数	0.98	外观尺寸	800 mm×900 mm×1100 mm
额定转速	10500 r/min	重量	2.4 t