This paper proposes a dual-stator high-temperature-superconducting modular linear vernier motor (DS-HTS-MLVM), suitable for long stroke applications. The dual stators are two pure slotted-cores and staggered by half the stator pole-pitch. The mover adopts a modular structure, installed with HTS excitation windings and copper armature windings. The cryostats for HTS windings also adopt a...
The electrically excited high temperature superconducting (HTS) coils can replace the mover of the linear synchronous motor (LSM) for electromagnetic launching with an expectation of improving the motor’s efficiency. In this paper, three stators with different core and winding structures are designed for the LSMs with the movers made by HTS coils. The electromagnetic parameters of these three...
Marine energy power generation fits the concept of Sustainable Development Goals: SDGs because it is renewable, safe and widely available energy source. It is expected to be developed as a predictable energy resource in island nations and countries facing the sea since the force generated by seawater is persistent. Conventional generators are good for high-speed and low-torque fluid, so we...
As the efficiency of ordinary linear motors for electromagnetic launching is not high enough, the high temperature superconducting linear synchronous motor (HTS-LSM) is proposed with an expectation to improve the efficiency. This research focuses on a unilateral type HTS-LSM which mover is made up of closing coils pre-excited. In the research, the motor’s electromagnetic thrust characteristics...
No-insulation (NI) high temperature superconducting (HTS) machine is a kind of synchronous semi-superconducting machine with high power density and enhanced thermal stability. This technique has a great potential for electric aircraft propulsion systems, in which the NI HTS coils are used as rotor windings. However, NI HTS coils suffer from eddy currents flowing through turn-to-turn contacts...
Electrodynamic suspension (EDS) system is promised to be the ideal option for high speed magnetic levitation transportation. The electromagnetic forces for levitation and guidance of the EDS system are based on the relative motion of onboard superconducting magnets and the null-flux coils fixed on the ground. This unique working principle requires an auxiliary device to suspend the vehicle at...
Generally, the double sided linear HTS induction motor has higher propulsive force and higher efficiency because the HTS windings can carry higher current with lower loss. In this paper, the primary side of the proposed linear motor is made from silicon steel sheet, and ReBCO HTS tapes are used to wind the armature windings which are settled into the iron core. The secondary sides are made...
This paper presents calculation results of time-varying behavior of no-insulation (NI) high temperature superconductor (HTS) field coil for synchronous motor considering armature reaction and slotting effect. Despite the direct current (DC) operation in synchronous motor with HTS field winding, NI field coils are under time-varying conditions caused by rotor field harmonics depending on...
Development of High Temperature Superconductors (HTS) electrical machines results in applications of various fields, (linear machine, axial field machine), as they have higher efficiency and power density. Numerical modeling of superconducting electrical machines is usually performed by finite element method based on their electrical behavior. H-formulation of the Maxwell’s equations, is one...
Full superconducting generator uses superconducting magnets wound with HTS tapes to replace copper wires to form a strong magnetic field. As far as superconducting magnets are concerned, stabilization is the guarantee of reliable operation of superconducting magnets, because in the operation of superconducting magnets, small changes in temperature, magnetic field or current will cause magnetic...
A Linear synchronous motor (LSM) is more electrically and mechanically efficient as compared to a linear induction motor (LIM) when it is running at high speed. Therefore, LSM is especially suitable for maglev which is usually operated over 400 km/h. To acquire stronger thrust force, high-temperature superconducting (HTS) magnets are proposed to replace traditional permanent magnets or...
One of the biggest weaknesses of superconducting coils is that the coil burns out when quick action is not taken at the moment of quench. It is known that the no insulation (NI) technology of the high temperature superconducting (HTS) coil almost solved the problem of burning the coil by this quench. In HTS coil applications, the larger coil sizes and higher generated magnetic field strengths...
