In 2010, we reported, for the first time, the no-insulation (NI) winding technique for high-temperature superconducting (HTS) pancake coils. Based on our test results of small NbTi NI coils, reported ...

The transverse-flux machine (TFM) is an ideal candidate for direct-drive traction due to its short effective flux path and high torque density. However, TFMs normally suffer from large longitudinal ...