A test rig for thrust force measurements of an all HTS linear synchronous motor

Pina, João Murta; Pereira, Pedro; Valtchev, Stanimir; Neves, Mário Ventim; Álvarez, Alfredo; Rodrigues, Luís Monteiro

doi:10.1088/1742-6596/97/1/012220

Cited by 9 publications

(7 citation statements)

References 4 publications

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“…This is intended to generate high flux densities in the surrounding medium, in order to eliminate iron, thus implementing a light device. The first approach, described elsewhere [17], [18], is built by a single stator's topology, which lead to strong magnetic flux density components perpendicular to the tape surface, thus severely degrading its superconducting performance; and to the development of vertical and thrust forces of comparable amplitude, thus degrading its mechanic and control performance. The double stator's topology, as shown later, eliminates those restrictions.…”

Section: All Superconducting Linear Synchronous Motormentioning

confidence: 99%

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Research and Development of Alternative Concepts in HTS Machines

Pina¹,

Inácio²,

Luis

et al. 2011

IEEE Trans. Appl. Supercond.

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High temperature superconducting (HTS) machines are recognized to offer several advantageous features when comparing to conventional ones. Amongst these, highlights the decrease in weight and volume of the machines, due to increased current density in conductors or the absence of iron slots' teeth; or the decrease in AC losses and consequent higher efficiency of the machines, even accounting for cryogenics. These concepts have been already demonstrated and some machines have even achieved commercial stage. In this paper, several alternative approaches are applied to electrical motors employing HTS materials. The first one is an all superconducting linear motor, where copper conductors and permanent magnets are replaced by Bi-2223 windings and trapped flux magnets, taking advantage of stable levitation due to flux pinning, higher current densities and higher excitation field. The second is an induction disk motor with Bi-2223 armature, where iron, ironless and hybrid approaches are compared. Finally, an innovative command strategy, consisting of an electronically variable pole pairs' number approach, is applied to a superconducting hysteresis disk motor. All these concepts are being investigated and simulation and experimental results are presented.

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Section: All Superconducting Linear Synchronous Motormentioning

confidence: 99%

“…The forces are plotted in Fig. 7, and with the current topology, no vertical forces are developed, leading to a better performance when comparing with the single stator topology [17], [18]. The position of the mover where thrust is maximized is numerically found as , i.e.,…”

Section: Numerical Determination Of the Developed Forcesmentioning

confidence: 99%

Research and Development of Alternative Concepts in HTS Machines

Pina¹,

Inácio²,

Luis

et al. 2011

IEEE Trans. Appl. Supercond.

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“…The researchers in Portugal developed a fully HTS linear synchronous motor. The primary coils are developed by using first generation HTS wires; whereas the secondary is composed of two single-domain YBCO bulks [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Status and research progress of the linear rail transit system in China

Zhang

et al. 2016

Transportation systems and technology

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Abstract:The linear rail transit system (LRTS) has the advantages such as high performance, low construction cost, easy maintenance, friendly with the environment, the researchers all over the world therefore has focused their interests on the LRTS. Despite its late start, China is marking a rapid progress on the study of the linear rail transit system. The LRTS in China can be divided into two types: maglev train system and the linear metro system. This article will revolve around the two aspects above to address the develop status and the newly research progress of the LRST in China. Meanwhile, the article also presents the research progress of the high-temperature superconducting (HTS) linear motors used for LRTS.

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“…Kim et al used BSSCO windings instead of copper windings as the armature of a linear synchronous motor [5]. Pina et al designed a linear synchronous motor with BSSCO windings as the armature and YBCO bulk magnets as the excitation system [6]. The volume of the motor has been reduced in the designs.…”

Section: Introductionmentioning

confidence: 99%