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超导磁能存储(SMES)

1970
用于固态物理应用的实验室超导磁储能系统。

(图片仅供参考)

Superconducting Magnetic Energy Storage (SMES) systems store energy in the magnetic field created by the flow of direct current in a superconducting coil. The energy can be stored indefinitely as long as the coil is kept at superconducting temperatures, as there is virtually no energy loss due to electrical resistance. The stored energy is given by [latex]E = \frac{1}{2} L I^2[/latex].

An SMES unit consists of three main parts: a superconducting coil, a power conditioning system (PCS), and a cryogenic refrigerator. The coil is made from a superconducting material (like Niobium-titanium) which, when cooled below its critical temperature, has near-zero electrical resistance. A direct current is charged into the coil, creating a strong magnetic field where energy is stored according to the formula [latex]E = frac{1}{2} L I^2[/latex], where L is the coil’s inductance and I is the current. Because the resistance is negligible, the current can circulate perpetually with minimal loss, making the storage highly efficient. The PCS, typically using solid-state inverters/rectifiers, manages the flow of power, converting AC power from the grid to DC for charging the coil, and converting the stored DC energy back to AC for discharge. The entire coil must be maintained at extremely low temperatures (around 4.2 K for low-temperature superconductors) by a 低温冷却器这代表了主要的持续能源成本。超导磁储能系统(SMES)的特点是往返效率极高(>95%)、响应时间极短(毫秒级)且循环寿命无限。然而,其能量密度相对较低,且初始投资成本(主要用于超导线和低温系统)非常高,这限制了其在高价值、短时功率应用中的使用。

UNESCO Nomenclature: 2211
– Solid state physics

类型

Physical Device

中断

Incremental

用法

Niche/Specialized

前体

  • 汉斯·克里斯蒂安·奥斯特发现电磁学(1820 年)
  • Michael Faraday’s law of induction
  • discovery of superconductivity by Heike Kamerlingh onnes (1911)
  • 开发能够在强磁场中承载大电流的 II 型超导体

应用程序

  • 电网电能质量改善和电压稳定
  • 关键设施的不间断电源(UPS)
  • 频率调节
  • 动力 高能 物理实验

专利:

NA

潜在创新理念

  • high-temperature superconductor (HTS) SMES systems to reduce cooling costs
  • 环形线圈设计用于限制磁场并减少杂散场
  • 微型中小型电机用于分布式电能质量应用
  • 高功率和高能量的混合型半导体电池系统
  • 专用无线SME充电系统
  • 与磁悬浮列车系统集成
  • 用于航天器电源系统和脉冲能量武器的中小企业
  • 用于可扩展电网部署的模块化中小企业单元
  • 采用SME技术的故障电流限制功能
  • 开发失超保护系统来管理从超导到正常状态的转变
Related to: SMES, superconductivity, magnetic field, energy storage, superconducting coil, cryogenics, power quality, high efficiency, inductance, direct current.

历史背景

超导磁能存储(SMES)

1964
1968
1970
1970
1975
1980
1980
1963
1965
1970
1970
1974-11-15
1980
1980
1980

(如果日期未知或不相关,例如“流体力学”,则提供其显著出现的近似估计)

第十年 周年纪念日

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