飞轮储能系统容量分析与设计

doi:10.12028/j.issn.2095-4239.2019.0047

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (4): 778-783.doi: 10.12028/j.issn.2095-4239.2019.0047

飞轮储能系统容量分析与设计

皮振宏¹, 戴兴建¹, 魏殿举², 徐旸¹

1 清华大学工程物理系, 北京 100084;
2 中石化中原石油工程有限公司, 河南濮阳 457001

收稿日期:2019-04-02 修回日期:2019-04-18 出版日期:2019-07-01 发布日期:2019-07-01
通讯作者: 戴兴建,博士,副研究员,主要研究方向为飞轮储能技术,E-mail:daixj@mail.tsinghua.edu.cn。
作者简介:皮振宏(1993-),男,硕士研究生,主要研究方向为飞轮储能结构设计,E-mail:pizh16@mails.tsinghua.edu.cn
基金资助:
国家重点研发计划项目（2018YFB0905500）。

Analysis and design of the capacity and efficiency of a flywheel energy storage system

PI Zhenhong¹, DAI Xingjian¹, WEI Dianju², XU Yang¹

1 Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
2 SINOPE Zhongyuan Petroleum Engineering Co Ltd., Puyang 457001, Henan, China

Received:2019-04-02 Revised:2019-04-18 Online:2019-07-01 Published:2019-07-01

摘要/Abstract

摘要： 分析了飞轮储能系统能量、功率参数特性。飞轮储能系统单机可实现储能0.5 ～ 100 kW·h、功率2～ 3000 kW。提出了储能100 kW·h级飞轮的方案，采用中低转速合金钢飞轮转子，储能密度13～ 18 W·h/kg，计算许用应力为800 MPa。尺寸为米级的飞轮转子整体锻造难度较高，可采用多圆盘轴向联接的结构设计。采用3层或4层纤维缠绕复合材料高速飞轮转子结构，分别进行了径向等应力结构设计，计算表明9000 r/min三层纤维缠绕复合材料飞轮和15000 r/min四层纤维缠绕复合材料飞轮均能够满足工作转速下的结构强度要求，储能密度50 ～ 70 W·h/kg。

关键词: 飞轮储能, 储能量, 充放电功率, 复合材料飞轮

Abstract: In this paper, the energy and power characteristics of a flywheel energy storage system are analyzed. Current flywheel energy storage systems could store approximately 0.5-100 kW·h energy and discharge at a rate of 2-3000 kW. Here a design of a 100kW·h flywheel is proposed. By using a low speed steel flywheel rotor with a stress limit of 800 MPa, the energy density could reach 13-18W·h/kg. With such a stress level, however, the size of the flywheel could reach the meter scale, making it difficult to manufacture. To overcome such a challenge, a multi-disc axial connection structure design was proposed. The high-speed composite flywheel rotor was designed with 3 or 4 thin cylinders made from winding fber reinforced composite considering the radial stress optimization. Stress analyses indicated that both the 3-layer flywheel at a speed of 9000 r/min and the 4-layer flywheel at a speed of 15000 r/min would meet the structural strength requirements with an energy density at 50-70 W·h/kg.

Key words: flywheel energy storage, energy storage capacity, charging/discharging power, composite ?ywheel

中图分类号:

TK123

皮振宏, 戴兴建, 魏殿举, 徐旸. 飞轮储能系统容量分析与设计[J]. 储能科学与技术, 2019, 8(4): 778-783.

PI Zhenhong, DAI Xingjian, WEI Dianju, XU Yang. Analysis and design of the capacity and efficiency of a flywheel energy storage system[J]. Energy Storage Science and Technology, 2019, 8(4): 778-783.

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飞轮储能系统容量分析与设计

Analysis and design of the capacity and efficiency of a flywheel energy storage system

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