We are developing an advanced electric propulsion system as a promising solution to achieve carbon-neutral growth in the aviation sector. In a previous study, we successfully developed and tested a 400 kW-class fully superconducting synchronous machine using REBCO racetrack-shaped coils for both the field and armature. The cooling system utilized sub-cooled liquid nitrogen for the armature...
The field of electrified aircraft propulsion is undergoing a transformative evolution, driven by breakthrough advancements in superconducting electrical machines. Significant interest exists in the development of closed-loop, rotor-mounted cryocooler superconducting rotors, with several projects pursuing this innovative approach. This design simplifies the cryogenic requirements of...
Most conventional wind power generators need a high amount of rare-earth permanent magnet material (RE-PM).
Gearless low-speed solutions (โ10 rpm) require โ0.5 ton/MW of RE-PMs. Most work on High-Temperature Superconductors (HTS) in wind power generators has been focused on this type so far and requires high amounts of HTS tapes.
Geared mid-speed solutions (400โฆ600 rpm) need only โ50 kg/MW...
Hyper Tech Research will report on progress that has been made on developing high purity aluminum (HPAL) and magnesium diboride superconductor wires, cables and coils with significantly lower AC losses. The use of HPAL low AC loss stands will enable high power density motors and generators in the 35-45 kW/kg range, with efficiencies in the range of 99%. HPAL low AC loss coils for stators can...
Higher field, much lighter-weight and more efficient ac magnets that can operate at affordably cooled temperatures above 12 K require HTS. Stator coils for example operate in fast AC modes where HTS tapes cannot be used due to excessive induction-driven losses, requiring instead HTS as small cross-sectioned, fine-filament, axially twisted wires in transposed cable forms. An approach has been...
Offshore wind power generation is pivotal for the decarbonization of the energy sector, with projections indicating that installed capacity could exceed 200 GW by 2030. As turbine size and power ratings increase, the industry encounters challenges concerning components such as blades, structures, and generators. Partially superconducting generators (SCGs) (superconducting field, normally...
Recently, due to the electrification of mobility systems such as aircraft and ships, the development of high power density propulsion systems has been actively researched. In conventional electric machines based on permanent magnets and copper, the power density is limited due to constraints in current density and magnetic field. As an alternative, high-temperature superconducting (HTS)...
Bi:2212 is a well-known high current superconductor which can be made in round wire form. It has usually been of interest for DC or low ramp applications because of both filament bridging and also a high Ag content which encourages large coupling and eddy current losses. However, a new low loss Bi:2212 has been under development which both attempts to suppress the bridging as well as eddy and...
