scholarly journals Superconducting magnetic energy storage and superconducting self-supplied electromagnetic launcher

2017 ◽  
Vol 80 (2) ◽  
pp. 20901 ◽  
Author(s):  
Jérémie Ciceron ◽  
Arnaud Badel ◽  
Pascal Tixador
Keyword(s):  
Magnetic Field ◽  
Energy Storage ◽  
Energy Density ◽  
Magnetic Energy ◽  
High Energy ◽  
Small Scale ◽  
Superconducting Magnetic Energy Storage ◽  
Superconducting Coil ◽  
Electromagnetic Launcher ◽  
Magnetic Energy Storage

Superconductors can be used to build energy storage systems called Superconducting Magnetic Energy Storage (SMES), which are promising as inductive pulse power source and suitable for powering electromagnetic launchers. The second generation of high critical temperature superconductors is called coated conductors or REBCO (Rare Earth Barium Copper Oxide) tapes. Their current carrying capability in high magnetic field and their thermal stability are expanding the SMES application field. The BOSSE (Bobine Supraconductrice pour le Stockage d’Energie) project aims to develop and to master the use of these superconducting tapes through two prototypes. The first one is a SMES with high energy density. Thanks to the performances of REBCO tapes, the volume energy and specific energy of existing SMES systems can be surpassed. A study has been undertaken to make the best use of the REBCO tapes and to determine the most adapted topology in order to reach our objective, which is to beat the world record of mass energy density for a superconducting coil. This objective is conflicting with the classical strategies of superconducting coil protection. A different protection approach is proposed. The second prototype of the BOSSE project is a small-scale demonstrator of a Superconducting Self-Supplied Electromagnetic Launcher (S3EL), in which a SMES is integrated around the launcher which benefits from the generated magnetic field to increase the thrust applied to the projectile. The S3EL principle and its design are presented.

Bi-Directional Z-Source Inverter for Superconducting Magnetic Energy Storage Systems

2015 ◽  
Vol 787 ◽  
pp. 823-827
Author(s):  
U. Shajith Ali
Keyword(s):  
Magnetic Field ◽  
Energy Storage ◽  
Power Flow ◽  
Magnetic Energy ◽  
Power Conversion ◽  
Superconducting Magnetic Energy Storage ◽  
Superconducting Coil ◽  
Conversion System ◽  
Magnetic Energy Storage ◽  
Dc Current

Superconducting magnetic energy storage (SMES) is basically a DC current energy storage technology which stores energy in the form of magnetic field. The DC current flowing through a superconducting coil in a large magnet creates the magnetic field. Because of its fast response during charging and discharging, ability of injecting/absorbing real or reactive power, high storage efficiency, reliability and availability, the SMES technologies are used in power system transmission control and stabilization, and power quality improvement. Generally, an SMES consists of the superconducting coil, the cryogenic system, and the power conversion system. The power conversion system normally uses a power electronic converter as an interface between the coil and AC output. This converter is needed to act as the boost converter during DC side to AC side power flow since the storage suffered from lower input voltage magnitude. On the other hand, the converter is required to work as buck converter during reverse power flow. So the converter must be having bidirectional power flow capability because the need to charge and discharge the coil. The bi-directional Z-source inverter is a new topology, which provides the circuit with bi-directional power flow capacity. This inverter can overcome the limitations of the basic Z-source inverter and be used as an interface between energy storage and utility. A novel modified space vector pulse width modulation (SVPWM) algorithm for bi-directional Z-source inverter is developed in this work, which improves the voltage gain during the boost mode. In the proposed modified SVPWM, four shoot-through states are assigned to each phase within zero state. So zero voltage time period is diminished for generating a shoot-through time, and active states are unchanged. Using MATLAB, the models of the bi-directional Z-source inverter based SMES is established, and the simulation tests are performed to evaluate the system performance.

scholarly journals Characteristics and Applications of Superconducting Magnetic Energy Storage

2021 ◽  
Vol 2108 (1) ◽  
pp. 012038
Author(s):  
Yuyao Huang ◽  
Yi Ru ◽  
Yilan Shen ◽  
Zhirui Zeng
Keyword(s):  
Energy Storage ◽  
Future Study ◽  
Cooling System ◽  
Magnetic Energy ◽  
Thermal Power ◽  
High Energy ◽  
Environmental Conservation ◽  
Large Power ◽  
Superconducting Magnetic Energy Storage ◽  
Magnetic Energy Storage

Abstract Energy storage is always a significant issue in multiple fields, such as resources, technology, and environmental conservation. Among various energy storage methods, one technology has extremely high energy efficiency, achieving up to 100%. Superconducting magnetic energy storage (SMES) is a device that utilizes magnets made of superconducting materials. Outstanding power efficiency made this technology attractive in society. This study evaluates the SMES from multiple aspects according to published articles and data. The article introduces the benefits of this technology, including short discharge time, large power density, and long service life. On the other hand, challenges are proposed for future study. The high energy requirement of the cooling system and carbon emissions are some of the drawbacks of SMES. It’s found that SMES has been put in use in many fields, such as thermal power generation and power grid. SMES can reduce much waste of power in the energy system. The article analyses superconducting magnetic energy storage technology and gives directions for future study.

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