Analysis and application of high strength alloy steel flywheel structure and material

doi:10.19799/j.cnki.2095-4239.2021.0260

Abstract

Abstract:

Compared with fiber reinforced composites, high strength alloy steel flywheel has the advantages of mature material and low manufacturing difficulty, which is suitable for flywheel energy storage rotor shafting with weak weight constraint. This paper analyzes the energy storage density, material strength requirement and kinetic energy storage material cost of typical high strength steel disk flywheel. Based on the requirements of heat treatment hardenability and energy storage, two kinds of flywheel structures, 50 kW·h and 7.5 kW·h, are designed. The 50 kW·h flywheel is 6000 r/min, and the circumferential speed is 376.8 m/s; The speed of 7.5 kW·h flywheel is 18000 r/min, and the circumferential speed is 433.5 m/s. The finite element stress analysis shows that its strength is safe. A 400 kW/7.5 kW·h engineering test prototype was developed. The test speed reached 18000 r/min and the kinetic energy of the rotor was 27 MJ. Through field high-speed dynamic balancing, the maximum vibration amplitude of shafting increases from 70 μm dropped to 20 μm The amplitude is reduced by 70%. During the charging and discharging process of 9000—18000—9000 r/min, the input electric energy is 21.5 MJ and the output electric energy is 19.5 MJ.

Key words: flywheel energy storage, high strength alloy steel, finite element analysis, prototype test

CLC Number:

TH 133

Xingjian DAI, Dongxu HU, Zhilai ZHANG, Haisheng CHEN, Yangli ZHU. Analysis and application of high strength alloy steel flywheel structure and material[J]. Energy Storage Science and Technology, 2021, 10(5): 1667-1673.

Figures/Tables 13

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References 12

1	AMROUCHE S O, REKIOUA D, REKIOUA T, et al. Overview of energy storage in renewable energy systems[J]. International Journal of Hydrogen Energy, 2016, 41(45): 20914-20927.
2	AKINYELE D O, RAYUDU R K. Review of energy storage technologies for sustainable power networks[J]. Sustainable Energy Technologies and Assessments, 2014, 8: 74-91.
3	AMIRYAR M E, PULLEN K R. A review of flywheel energy storage system technologies and their applications[J]. Applied Sciences, 2017, 7(3): 286.
4	DHAND A, PULLEN K. Review of battery electric vehicle propulsion systems incorporating flywheel energy storage[J]. International Journal of Automotive Technology, 2015, 16(3): 487-500.
5	GAYATHRI N S, SENROY N, KAR I N. Smoothing of wind power using flywheel energy storage system[J]. IET Renewable Power Generation, 2017, 11(3): 289-298.
6	ARSLAN M A. Flywheel geometry design for improved energy storage using finite element analysis[J]. Materials & Design, 2008, 29(2): 514-518.
7	LAUTENSCHLAGER U, ESCHENAUER H A, MISTREE F. Multiobjective flywheel design: A DOE-based concept exploration task[C]//ASME 1997 Design Engineering Technical Conferences, 1997.
8	任正义, 赫鹏, 杨立平. 600 W·h飞轮转子形状优化设计[J]. 机械设计与制造, 2021(4): 117-120+125.REN Z Y, HE P, YANG L P. 600 W·h flywheel rotor shape optimization[J]. Machinery Design ＆ Manufacture, 2021(4): 117-120+125.
9	武鑫, 陈玉龙, 柳亦兵. 并网型飞轮储能系统金属转子结构优化设计[J]. 太阳能学报, 2021, 42(2): 317-321.WU X, CHEN Y L, LIU Y B. Structure optimization design of metal rotor for grid connected flywheel energy storage system[J]. Acta Energiae Solaris Sinica, 2021, 42(2): 317-321.
10	兰晨, 李文艳. 两种变厚度空心储能飞轮的应力特性[J]. 储能科学与技术, 2021, 10(3): 1080-1087.LAN C, LI W Y. Stress characteristics of two kinds of variable thickness hollow energy storage flywheels[J]. Energy Storage Science and Technology, 2021, 10(3): 1080-1087.
11	赵宇兰, 董爱华, 莫逆, 等. 外转子储能飞轮结构优化设计研究[J]. 汽轮机技术, 2020, 62(2): 89-92.ZHAO Y L, DONG A H, MO N, et al. Optimization design of the energy storage flywheel with external rotor[J]. Turbine Technology, 2020, 62(2): 89-92.
12	HU S, LIU C, DING J, et al. Thermo-economic modeling and evaluation of physical energy storage in power system[J]. Journal of Thermal Science, 2021, doi: 10.1007/s11630-021-1417-4.

序号	切线速度/(m·s^-1)	储能密度极限/(W·h·kg^-1)	圆盘飞轮储能密度/(W·h·kg^-1)	芯部应力/MPa	屈服强度需求/MPa	抗拉强度需求/MPa	材料	单价/ (元·kg^-1)	动能成本/[元·(W·h)^-1]
1	300	12.5	6.25	291	466	582	30CrMoA	15	2.40
2	360	18	9	420	672	840	30Cr₂Ni₄MoV	18	2.00
3	420	24.5	12.25	571	914	1142	34CrNi₃Mo	20	1.63
4	450	28	14	656	1050	1312	30Cr₂MnMoNi₂	22	1.57
5	480	32	16	746	1194	1492	30Cr₂MnMoNi₂	24	1.50

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