Design of a 10 kW Superconducting Homopolar Inductor Machine Based on HTS REBCO Magnet

Ma, Jun; Pan, Yuanhang; Luo, Xuezhi; Xiao, Huaqian; Yang, Jiangtao; Simpson, Nick; Mellor, Phil

doi:10.1109/tasc.2023.3345289

Cited by 3 publications

(1 citation statement)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The authors in [14] studied the loss and temperature rise distribution characteristics of each component of the hub motor under different air gap lengths. The authors in [15][16][17] studied the temperature rise characteristics caused by heat loss due to internal factors such as the iron core, winding, and permanent magnet in the hub motor. The authors in [18] noted that under the influence of external factors such as ambient temperature, altitude, and road excitation, the temperature of the iron core, winding, and permanent magnet inside the hub motor will further increase.…”

Section: Introductionmentioning

confidence: 99%

Research on Torque Characteristics of Vehicle Motor under Multisource Excitation

Yang,

Bao,

Huang

et al. 2024

Electronics

View full text Add to dashboard Cite

A hub motor is integrated into an electric wheel. The external excitation is complex and the heat dissipation conditions are poor. The working temperature of the hub motor easily becomes too high, resulting in large fluctuations in the output torque, which affect its service life. Taking a four-wheel hub-driven electric vehicle as the research object and aiming to resolve the issue of inaccurate prediction of the output torque of the hub motor in the real operating environment of the vehicle, a method for analyzing the temperature rise and torque characteristics of the hub motor considering multisource excitation and magnetic–thermal bidirectional coupling is proposed. First, the multisource excitation transmission path of the hub motor and the coupling principle of the road-electric wheel-vehicle body suspension system are analyzed from three aspects: the electromagnetic effect of the hub motor itself, the tire-ground effect, and the interaction between suspension (body) and electric wheel. We concluded that the load torque and air gap change in the motor are the key factors of its torque characteristics. On this basis, a dynamic model of the road-electric wheel-suspension-vehicle body system, an electromagnetic field model of the hub motor, and a temperature field model are established, and the influence of load torque and air gap change on the loss of in-wheel motor under multisource excitation is analyzed. Furthermore, based on the magnetic–thermal bidirectional coupling method, the motor loss under the combined action of load torque and air gap change is introduced into the temperature field model, and combined with the electromagnetic field model of the hub motor, the temperature distribution law and torque characteristics of the hub motor are accurately predicted. Finally, the accuracy and effectiveness of the calculation results of the temperature and torque characteristics of the hub motor are verified via an electric wheel bench test.

show abstract

Section: Introductionmentioning

confidence: 99%

Research on Torque Characteristics of Vehicle Motor under Multisource Excitation

Yang,

Bao,

Huang

et al. 2024

Electronics

View full text Add to dashboard Cite

show abstract

Dynamic resistance of a REBCO tape carrying direct current under a mixture magnetic field of AC field with DC-biased field

Xiao,

Ma,

Luo

et al. 2024

Supercond. Sci. Technol.

View full text Add to dashboard Cite

When the REBCO coated conductor tape carries a direct current(DC) transport current whilst exposed to the alternating current(AC) magnetic field, a DC electrical resistance can be observed, which is called “dynamic resistance”. The High Temperature Superconducting(HTS) magnet wound by the REBCO tapes is located in the HTS electrical machine as field winding carrying DC transport current. The operational environment of the HTS electrical machine involves a complex magnetic field, encompassing both AC and DC components. The interaction between the AC magnetic field and the DC transport current induces dynamic resistance and dynamic loss in the REBCO tape which is a distinctive trait of REBCO tape. Additionally, the presence of an extra DC-biased magnetic field can decrease the critical current of the REBCO tape, thereby altering its electromagnetic properties and potentially compromising its safety. As the basis of superconducting magnets, it is particularly important to study the dynamic resistance and loss distribution of the single REBCO tape under a mixture of magnetic field backgrounds, according to the real working environments in various applications. In this paper, the electromagnetic-thermal coupling model of multilayer REBCO tape based on H-formulation is built in COMSOL Multiphysics. The electromagnetic characteristics and dynamic resistance of the tape are presented when the tape is applied AC magnetic field and carries DC transport current. The effects of perpendicular and parallel DC-biased magnetic fields on the dynamic resistance and loss distribution of the REBCO tape are investigated in the paper. And the DC transport current safety margin will be observed in different applied DC-biased magnetic fields. This study comprehensively demonstrates the variation of dynamic resistance and loss distribution under a complex background magnetic field, which is significant for exploring the electromagnetic characteristics and calculating the loss of the HTS magnets in the HTS electrical machine.

show abstract

Design of HTS Excitation Coil for Homopolar Inductor Machine Considering Critical Current Reduction of Local Turn

Pan,

Yang,

et al. 2024

IEEE Trans. on Ind. Applicat.

View full text Add to dashboard Cite

Design of a 10 kW Superconducting Homopolar Inductor Machine Based on HTS REBCO Magnet

Cited by 3 publications

References 41 publications

Research on Torque Characteristics of Vehicle Motor under Multisource Excitation

Research on Torque Characteristics of Vehicle Motor under Multisource Excitation

Dynamic resistance of a REBCO tape carrying direct current under a mixture magnetic field of AC field with DC-biased field

Design of HTS Excitation Coil for Homopolar Inductor Machine Considering Critical Current Reduction of Local Turn

Contact Info

Product

Resources

About