Fully superconducting machine for electric aircraft propulsion: study of AC loss for HTS stator

@article{Weng2020FullySM,
  title={Fully superconducting machine for electric aircraft propulsion: study of AC loss for HTS stator},
  author={Fangjing Weng and Min Zhang and Tian Lan and Yawei Wang and Weijia Yuan},
  journal={Superconductor Science and Technology},
  year={2020},
  volume={33}
}
Fully superconducting machines provide the high power density required for future electric aircraft propulsion. However, superconducting windings generate AC losses in AC electrical machine environments. These AC losses are difficult to eliminate at low temperatures, and they add an extra burden to the aircraft cooling system. Due to the heavy cooling penalty, AC loss in the HTS stator is one of the key topics in HTS machine design. In order to evaluate the AC loss of superconducting stator… 
Transient Test and AC Loss Study of a Cryogenic Propulsion Unit for All Electric Aircraft
TLDR
The test shows AC loss performance of the HTS windings using calorimetric method during the short circuit event, indicating the importance of developing protection schemes for the cryogenic propulsion units to prevent damage to the H TS components.
Alternating Current Loss of Superconductors Applied to Superconducting Electrical Machines
TLDR
This article systematically reviews the qualitative and quantitative analysis methods of AC loss as well as its reduction techniques in superconductors applied to electrical machines for the first time to help deepen the understanding of AC Loss and deliver a helpful guideline for the future development of superconducting machines and applied superconductivity.
Characterization of HTS Coils for Superconducting Rotating Electric Machine Applications: Challenges, Material Selection, Winding Process, and Testing
The second-generation high-temperature superconducting tapes (2G-HTS) such as the REBCO coated conductors are known for their strong mechanical properties and high current carrying capacity with low
Magnetic Field Saturation of Non-Insulation High-Temperature Superconducting Coils during Overcurrent
Non-insulation high-temperature superconducting coils provide a much lower risk of burnout in fault/abnormal conditions, such as hot-spot quench and overcurrent. This study employs an equivalent
Numerical Modeling of AC Loss in HTS Coated Conductors and Roebel Cable Using T-A Formulation and Comparison With H Formulation
TLDR
The performance of the T-A formulation for calculating the AC loss of coated superconductors and cables were assessed and compared against the widely accepted H formulation, with benchmark model of a single REBCO tape in 2D/3D and a 14-strand Roebel cable.
Anatomy of a 20 MW Electrified Aircraft: Metrics and Technology Drivers
TLDR
Major technologies and design trades for various components and system architectures are presented to provide guidelines and framework to address this grand challenge of electric drivetrain (EDT) designs that would significantly improve fuel burn reduction, design flexibility, and operational improvements in next generation of aircrafts.
Intelligent design of large-size HTS magnets for SMES and high-field applications: using a self-programmed GUI tool
Different from many superconducting magnet designs based on the analytical algorithm and finite element method (FEM), this article presents an intelligent design of the SMES and high-field magnet
Perspectives and Development of Electrical Systems in More Electric Aircraft
On-board electrical systems are the key components of each modern aircraft. They enable its safer, more comfortable, and environmentally friendlier operation. The strict regulations to reduce
...
...

References

SHOWING 1-10 OF 55 REFERENCES
Thermal analysis for the HTS stator consisting of HTS armature windings and an iron core for a 2.5 kW HTS generator
Most present demonstrations of high-temperature superconducting (HTS) synchronous motors/generators are partially superconducting, only installing HTS coils on the rotor as excitation windings. The
AC Losses of Superconducting Racetrack Coil in Various Magnetic Conditions
High-temperature superconductors have created the opportunity for a step change in the technology of power applications. Racetrack superconducting coils made from YBCO coated conductors have been
Development and testing of a 2.5 kW synchronous generator with a high temperature superconducting stator and permanent magnet rotor
High temperature superconducting (HTS) armature windings have the potential for increasing the electric loading of a synchronous generator due to their high current transport capacity, which could
Modeling and Electrical Measurement of Transport AC Loss in HTS-Based Superconducting Coils for Electric Machines
AC loss can be a significant problem for any applications that utilize or produce an AC current or magnetic field, such as an electric machine. The authors are currently investigating the
Total AC loss study of 2G HTS coils for fully HTS machine applications
The application of HTS coils for fully HTS machines has become a new research focus. In the stator of an electrical machine, HTS coils are subjected to a combination of an AC applied current and AC
Design, Build and Test of an AC Coil Using $ \hbox{MgB}_{2}$ Wire for Use in a Superconducting Machine
Superconducting machines offer the significant advantage of smaller volume, lighter weight, and increased operating efficiencies compared with traditional electrical machines. To date,
Modeling and Dynamics of HTS Motors for Aircraft Electric Propulsion
In this paper, the methodology of how a dynamic model of a conventional permanent magnet synchronous motor (PMSM) may be modified to model the dynamics of a high-temperature superconductor (HTS)
An effective way to reduce AC loss of second-generation high temperature superconductors
Second-generation (2G) high temperature superconducting (HTS) devices have high power density and efficiency for energy applications. However, in alternative current conditions, the vortex movement
AC losses in coated conductors
Future use of coated conductors in electric power applications like transmission cables, transformers or fault current limiters is sensitive to the amount of dissipation in the AC regime. This paper
Superconducting Electromagnetic Launch System for Civil Aircraft
TLDR
This paper considers the feasibility of different superconducting technologies for electromagnetic launch (EML) to assist civil aircraft takeoff to reduce the required runway length by increasing aircraft acceleration and improves overall aircraft efficiency through reducing engine design constraints.
...
...