Simple measurement of the AC transport current loss for HTS conductors using an active power detection method

The self-field loss on AC transport current for in situ PIT processed MgB2 superconducting tapes with carbides addition and the carbon steel sheath

“…A transformer amplifies the current and reduces the noise from the power supply. Additionally, AC losses were also measured by the other method, the active power method, for comparison [3]. The same results were confirmed between both methods.…”

“…The results showed that the inhomogeneity of the MgB 2 core affected the losses. Furthermore, two measurement methods have been studied using the spiral loop taps for detecting the voltage of the sample; the one is the ordinary phase-shift method with the cancellation coil and the lock-in amplifier and the other is the active power method which was proposed and developed for simplifying the measurement [3].…”