Abstract
In this paper, the authors measured AC losses of an MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> superconducting (SC) coil being applied to rotating magnetic field and induced alternating current at 20 K. While applying rotating magnetic field to the MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> SC coil using Halbach array permanent magnet rotor, 0.2-ohm load is connected to the MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> SC coil to induce transport current in the measurement system. The AC loss of the MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> SC coil, ohmic loss at the load are measured and estimated by torque meter and current probe, respectively. Also, theoretical estimation via FEM analysis is conducted. The results showed that the measured and calculated AC losses at 80 Hz are 7.23 W/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> and 7.17 W/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> , respectively. And measurement and analysis loss results are well agreed among 40-80 Hz.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
