It is of great industrial interest and academic importance to investigate the effect of phase angle of current harmonics on AC losses in superconductors especially for large scale power applications. However, only effect of amplitude of in-phase current harmonics on AC loss has been studied in literatures. We have numerically characterized nonsinusoidal AC loss of superconducting tapes carrying harmonic currents with phase angles varying from 0 to 2, and orders below 20th. A drastic AC loss variation was observed when phase angle was considered for harmonic components. Eventually, we found that different harmonic orders show different AC loss profile versus phase angle.
- harmonic analysis
- high temperature superconductors
- power system harmonics