Measurement of magnetization loss according to the winding pitch of CORC (R)

For the application of HTS wire to AC power equipment, a conductor with high current capacity and low loss is required. CORC (R), one of the high-current conductors manufactured using several HTS wires, is made by winding the wires in a spiral on a cylindrical former. Because the magnetization loss of a CORC (R) conductor depends on the degree of magnetic coupling between the wires constituting the CORC (R), it is necessary to know the value of the magnetization loss of the CORC (R) itself In order to obtain an accurate loss value, it is necessary to know the effect of the ratio of the winding pitch of the CORC (R) conductor in the pickup coil region sampling the magnetization loss signal. To confirm this effect, we prepare CORC (R) samples having various winding pitches, and measure and compare the magnetization losses. In addition, the magnetization loss was measured while rotating the CORC (R) samples and it was examined whether there was a difference in the magnetization loss according to the rotation.