The Poynting vector in HTSC transformer with separate excitation winding
The HTSC transformer with a separate excitation winding of the mutual magnetic flux is considered whose windings are made from first or second generation HTSC wires. There are given its construction and electrical schemes, the equations of electromagnetic balance, the total resistances of primary and secondary power windings and separate excitation winding. The transfer of electromagnetic field power is considered in a single-phase HTSC transformer with a separate excitation winding using the Poynting vector. There are shown the temporal change of reactive and active components of the Poynting vector and the decrease of the separate excitation winding leakage power flux, that causes to increase the HTSC power winding critical current density, to decrease the power loss in them, and to increase the HTSC transformer specific power.