Abstract
Superconducting Magnetic Energy Storage (SMES) devices are being developed around the world to meet the energy storage challenges. The energy density of SMES devices are found to be larger along with an advantage of using at various discharge rates. Superconducting tapes such as YBCO (Tc = 90 K) are wound around a mandrel to construct the solenoid type SMES. This SMES is cooled with Liquid Nitrogen (LN2) at 77 K. However, challenges pertaining to the development of mandrel which gives structural supports to the superconducting tapes and compatibility at cryogenic temperatures are still to be investigated. In the present work, hybrid composite material is proposed to be used as a mandrel in solenoid type SMES. In this work, different composite samples such as Double Layered Carbon, Single and Double Layered Kevlar and Hybrid Composite made of Carbon and Kevlar are treated in Liquid Nitrogen (LN2) and tested for mechanical behavior. An experimental investigation is carried out to investigate the mechanical behavior of composite samples to be compatible for SMES applications. From the investigation, it is observed that the strength of composites increased when treated in LN2. Further, Cryo-treated Double Layered Carbon and Kevlar are found to be desirable for SMES applications.
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