Application of HTS BSCCO Tapes in an Ironless Axial Flux Superconductor Motor

González-Parada, Adrián; Espinosa-Loza, Francisco; Castañeda-Miranda, Alejandro; Bosch-Tous, R.; Granados-Garcia, X.

doi:10.1109/tasc.2011.2178372

Cited by 18 publications

(6 citation statements)

References 6 publications

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“…6, the 8-poles HTS stator on axial flux configuration is shown. The geometry was obtained from the construction method described previously; the welded joints on each tape are clearly visible where this joint is the point of reduction [9].…”

Section: B Stator Evaluationmentioning

confidence: 99%

Inductive Method for the Determination of the Critical Current $I_{c}$ of HTS Stators in Axial Flux Configuration

González-Parada

Espinosa-Loza

Bosch-Tous

2012

IEEE Trans. Appl. Supercond.

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This work presents the evaluation and determination of the critical current of HTS stators in axial flux configuration. The stator construction was done considering the previously definite and optimized geometry, by cutting and soldering the sections of HTS tape in order to get the axial flux poles configuration. By this reason and due to the construction method, a reduction value of the initial critical current was presented. This reduction increases because of the stator pole numbers or the number of the welded joints. If the method of the four-lead is used, this one can introduce an additional error to the measurement of , which can present confusion.The inductive sensors used in the present work are based on the use of a Rogowski coil placed at the terminal end in order to observe the behavior of the circulating current in the superconductor stator. When the current flows through a superconductive tape and this one is increased, the behavior of the tension of the third harmonic also increases and it is induced in the coil. By this reason the tension value of the critical state can be determined and it is proportional to the amplitude of the driven current .Due to the characteristics of the signal to measure, it is necessary to make a signal conditioning. This conditioning was obtained using a filtering circuit and an integrator, connected to a data acquisition system (DAQS). The design of the filtrate parameters and the circuit of integration are presented altogether with the comparative results of the inductive measurement method and the four-lead method on tapes and stator.Index Terms-BSCCO-2223 tape, inductive measurement, ironless superconductor motors.

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Section: B Stator Evaluationmentioning

confidence: 99%

Inductive Method for the Determination of the Critical Current $I_{c}$ of HTS Stators in Axial Flux Configuration

González-Parada

Espinosa-Loza

Bosch-Tous

2012

IEEE Trans. Appl. Supercond.

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“…In Ref. [18], a miniature AFIM with a coreless stator including high temperature superconducting conductors is manufactured. In this article, several different designs for the rotor including rotor with aluminium winding and rotor with superconducting winding is examined.…”

Section: Introductionmentioning

confidence: 99%

Design and modelling of a two‐degrees‐of‐freedom dual‐rotor axial‐flux squirrel cage induction motor

Soheili,

Darabi,

Pourmirzaei Deylami

2023

IET Electric Power Appl

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A two‐degrees‐of‐freedom (2DOF) dual‐rotor axial‐flux induction motor (2DOF‐DRAFIM) is proposed with independent movement capability of rotors and its performance is evaluated in detail. First, using the analytical equations, the steady‐state model of the motor is presented and the electrical equivalent circuit is extracted along with an electromagnetic design algorithm for the proposed motor. In the next step, using two‐dimensional and three‐dimensional finite element modelling (FEM), the performance of the proposed motor is investigated. The results of the experimental measurements on the manufactured prototype confirm the validity of the results of theoretical modelling and finite element simulations. The proposed structure provides some unique features. One of the fascinating behaviours of the proposed 2DOF‐DRAFIM is that the higher‐speed rotor produces higher output torque and the lower‐speed rotor has lower torque. In this regard, the 2DOF structure can be considered a potential concept for electric vehicles (EVs) without needing a conventional mechanical differential.

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“…Accordingly, by the spread of AFIM applications, several papers have been published recently, related to these motors. References [3,[5][6][7][8][9][10][11] dealt with AFIM design and [4,[12][13][14][15][16][17][18] analysed their performance by various modelling methods; though most of them addressed AFIMs with solid iron rotors. The electromagnetic performance of solid iron rotor is notably weaker than the laminated one, while it is superior in high-speed applications due to its more mechanical robustness [9].…”

Section: Introductionmentioning

confidence: 99%

Various skewing arrangements and relative position of dual rotor of an axial fluxinduction motor, modelling and performance evaluation

Nobahari

Darabi

Hassannia

2018

IET Electric Power Applications

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Using a dual air-gap structure in a disc-type motor is an effective solution to eliminate undesirable axial force between stator and rotor, by which higher power density can be achieved, too. Furthermore, some of the performance characteristics such as pulsating torque may be improved greatly by adjusting the existing extra selective design parameters in a dual air-gap motor. Accordingly, in this study, a widespread design consideration is carried out on rotor skewing arrangements of a dual rotor (DR) axial flux induction motor with the aim of pulsating torque reduction. The studied scenarios include when the slots of both rotors are skewed exactly similar with different skew angles, the slots of both rotors are skewed similarly but in the opposite directions and the slots of both rotors are not skewed but one rotor is mounted on the shaft by some shift angle relative to the other. The last one is introduced as an alternative to skewed rotors, which is easily executable in small and large size motors with DR topology. Moreover, an algorithm is proposed to determine the appropriate shift angle. Three-dimensional time stepping finite element analysis is employed in all cases for verification. Fig. 12 Torque waveforms at 20% slip for the initial design, skewed rotors and non-skewed shifted rotors

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Application of HTS BSCCO Tapes in an Ironless Axial Flux Superconductor Motor

Cited by 18 publications

References 6 publications

Inductive Method for the Determination of the Critical Current $I_{c}$ of HTS Stators in Axial Flux Configuration

Inductive Method for the Determination of the Critical Current $I_{c}$ of HTS Stators in Axial Flux Configuration

Design and modelling of a two‐degrees‐of‐freedom dual‐rotor axial‐flux squirrel cage induction motor

Various skewing arrangements and relative position of dual rotor of an axial fluxinduction motor, modelling and performance evaluation

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