Maglev-cobra: an urban transportation system For highly populated cityes

Stephan, R.M.; Magdalena, Stephan Richard; Andrade, R. de; Rubens, de Andrade Junior; Ferreira, A.C.; Carlos, Ferreira Antonio; Costa, Fábio Moraes da; Santos, Costa Felipe; Machado, Ocione José; José, Machado Ocione

doi:10.17816/transsyst20151216-25

Cited by 5 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Both trains run on segregated tracks, like undergrounds or, more commonly, elevated tracks and don't interfere on local traffic. The levitation systems distribute the load on the support structure, which reduces the civil engineering costs and provides lighter and compact infrastructure [70,71]. The vehicle operating speeds of 50 km/h to 60 km/h, and maximum gradients close to 10 % of both suspension systems are equivalent and even superior to light rail vehicles (LRV) [72].…”

Section: __________________________________________________mentioning

confidence: 99%

“…The main Hovair ® and MiniMetro ® limitation is the track distance, that doesn't must be superior to 5 km to maintain its economic feasibility [73], while MagLevs don't have track length restriction. The radius curves are also a restriction factor for the ACV vehicles, while, for instance, the EML MagLev HSST [74], in Japan, or the SML MagLev-Cobra [70], in Brazil, can accept minimum curves of 50 meters.…”

Section: __________________________________________________mentioning

confidence: 99%

See 1 more Smart Citation

Air Cushion Vehicle (ACV): History Development and Maglev Comparison

Ferreira

Pelle

Stephan

et al. 2019

Transportation Systems and Technology

Self Cite

View full text Add to dashboard Cite

This paper will present the ACV working principle and a review of the past research developments of high-speed ACV trains and their efforts in countries like, Brazil, France, Germany, Italy, United Kingdom, and United States, and the low-speed ACV trains, revealing why the former did not match the expectations and failed, while the latter have been prospered and purchase a well-established market niche in short distance paths. Finally, this study will promote a direct comparison between the two technologies, ACV and MagLev, with advantages and disadvantages of each one. The ACV development will bring important insights to the research of MagLev trains from a technical and economic perspective, learning with errors of the ACV, that did not enable any high-speed projects to flourish, and, on other hand, the comparative success of the urban ACV, as a complete commercial solution, like the MagLev trains. LEM Linear Electric Motor LIM Linear Induction Motor LIMRV Linear Induction Motor Research Vehicle LRV Light Rail Vehicle LSM Linear Synchronous Motor MagLev Magnetic Levitation OHSGT Office of High Speed Ground Transportation PRT Personal Rapid Transit PTACV Prototype Tracked Air Cushion Vehicle RTV Research Test Vehicle

show abstract

Section: __________________________________________________mentioning

confidence: 99%

Section: __________________________________________________mentioning

confidence: 99%

Air Cushion Vehicle (ACV): History Development and Maglev Comparison

Ferreira

Pelle

Stephan

et al. 2019

Transportation Systems and Technology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Известно сверхпроводниковое магнитостатическое левитационное устройство, примененное в проекте «Кобра» [1]. Данное устройство содержит магнитный рельс в виде набора полюсов из постоянных магнитов, расположенных стационарно на путевой структуре, и криостатов…”

Section: постановка задачиunclassified

Levitation and Lateral Stabilization Device Based on a Second-Generation High-Temperature Superconductor

Antonov

Федорович²

2019

Transportation Systems and Technology

View full text Add to dashboard Cite

The superconducting levitation device comprises a stationary magnetic rail of permanent magnets and a cryostat on a vehicle with a second-generation high-temperature tape superconductor placed in the cryostat, folded in a stack or wound by a coil on a non-magnetic frame without electrical connection of the ends and the transport current. Cool tape high-temperature superconductor of the second generation, folded in a stack or wound on a non magnetic frame in the form of axisymmetric or track coil, without electric connections of the ends and a transport current, behaves as a massive sample of a superconductor and the Meissner Oxenfeld effect, the magnetic field created by the magnetic rail is displaced from the volume of the superconductor, causing the power of levitation and the vehicle hangs over the track structure. The high critical parameters of the second-generation high-temperature superconductor belt ensure efficient operation of the superconducting levitation device. Aim: To demonstration the technical feasibility and efficiency of creating a levitation unit based on the use of a second-generation high-temperature superconductor and permanent magnets made of rare earth metals. Methods: Calculations of the magnetic field distribution in the combination of a magnetic rail and a massive superconductor, preliminary design of the levitation unit and experimental studies on the model. Results: Experiments on a model of a superconducting levitation device confirmed the efficiency of this technical solution and its effectiveness. Conclusion: an original technical solution is proposed that allows to significantly improve the energy characteristics of the levitation node by using a second-generation high-temperature superconductor operating in a passive mode without a transport current, using the partial Meissner-Oxenfeld effect and the engagement of quantized magnetic flux strands at the pinning centers.

show abstract

“…Currently, three magnetic levitation techniques are employed for Maglev transportation: high-temperature superconducting (HTS) flux pinning suspension, electromagnetic suspension (EMS), and electrodynamic suspension (EDS) [2]. HTS relies on the non-ideal diamagnetism and flux-pinning properties of the type-II superconductors to achieve stable electromagnetic forces between permanent magnet guideways and superconductors [3,4]. EMS utilizes the interaction between ferromagnetic materials and electromagnets, requiring a closed control loop, due to the unstable nature of the attractive force [5,6].…”

Section: Introductionmentioning

confidence: 99%

Electrical Circuits Simulator in Null-Flux Electrodynamic Suspension Analysis

Franca

Zhu

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

This paper employed an electrical circuit simulator to investigate an electrodynamic suspension system (EDS) for passenger rail transport applications. Focusing on a null-flux suspension system utilizing figure-eight-shaped coils (8-shaped coils), the aim was to characterize the three primary electromagnetic forces generated in an EDS and to compare the findings with existing literature. The dynamic circuit theory (DCT) approach was utilized to model the system as an electrical circuit with lumped parameters, and mutual inductance values between the superconducting (SC) coil and the upper and lower loops of the 8-shaped coil were calculated and inputted into the simulator. The results were compared with experimental data obtained from the Yamanashi test track. The comparison demonstrated close alignment between the theoretical expectations and the obtained experimental curves, validating the accuracy of the proposed model. The study highlights the advantages of this new approach, including faster computation times and efficient implementation of modifications. Overall, this work contributes to the ongoing development and optimization of null-flux suspension Maglev systems.

show abstract

Maglev-cobra: an urban transportation system For highly populated cityes

Cited by 5 publications

References 7 publications

Air Cushion Vehicle (ACV): History Development and Maglev Comparison

Air Cushion Vehicle (ACV): History Development and Maglev Comparison

Levitation and Lateral Stabilization Device Based on a Second-Generation High-Temperature Superconductor

Electrical Circuits Simulator in Null-Flux Electrodynamic Suspension Analysis

Contact Info

Product

Resources

About