Search for a command to run...
Superconducting DC cables represent a highly promising technology for modern energy systems, including urban grids and autonomous devices. While the primary energy source is typically an AC generator, its conversion to direct current introduces harmonics across a wide frequency spectrum. This article presents experimental and analytical results from a study on a single-layer high-temperature superconducting (HTS) cable. Energy losses were measured under DC current with superimposed AC ripple at frequencies ranging from 400 Hz to 800 Hz and varying amplitudes. The results indicate that hysteresis losses dominate when AC current flows through the cable. Experimental data demonstrate that these losses remain relatively low at frequencies up to 800 Hz, even with harmonic amplitudes reaching up to 10% of the cable's critical current. This finding confirms the practical suitability of HTS DC cables for applications such as power grids, electrical machinery, and specialized power supplies. Additionally, loss calculations were performed using an analytical model, showing strong agreement with experimental results. This correlation validates the effectiveness of the modeling approach and provides valuable insights for optimizing HTS cable design. The study supports the broader integration of HTS DC cables into future energy infrastructure.