Construction and Test of MgB2Mock-Up Coils for LIQHYSMES

Abstract

One of the major challenges that come with an increasing contribution of renewable energies is the storage of the produced energy to balance the temporal fluctuations of power generation and consumption. Therefore, a novel multifunctional hybrid energy storage concept, i.e., LIQHYSMES, has recently been proposed. LIQHYSMES combines the advantages of the energy carrier LIQHYSMES (LH <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) and the Superconducting Magnetic Energy Storage (SMES). With its critical temperature of 39 K, magnesium diboride (MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) is a promising superconductor for this application. In this paper, we report on the construction and test of the first demonstrator LIQHYSMES solenoid mock-up coils made of MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> wires with lengths up to 1000 m. The results of cycling (charging and discharging) of the coils with different load curves and ramp rates up to 50 A/s are presented.