Faster than a Speeding Bullet: An Overview of Japanese High-Speed Rail Technology and Electrification

Uzuka, Tetsuo

doi:10.1109/mele.2013.2271839

Cited by 29 publications

(15 citation statements)

References 1 publication

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“…However, the SCMs can conduct electricity during power failure. The Japanese MLX01 vehicle uses this levitation technology [15,16].…”

Section: Electro-dynamic Suspension System (Eds)mentioning

confidence: 99%

“…4b [13,14]. Unlike a conventional EDS system, this system does not require any super-cooled magnets, neutralizing any cryogenic requirements [15,16]. However, the system requires auxiliary wheels to accelerate the vehicle until it acquires some initial take-off speed, after which it starts levitating.…”

Section: Permanent Magnet Electro-dynamic Suspension System (Pm-eds)mentioning

confidence: 99%

“…Since an ideal Halbach array does not exist, the magnetic field produced by such an array is not purely sinusoidal [13]. Thus, for smaller levitation air gaps, irregularity in the magnetic field produces higher-order harmonics in the system [15]. These harmonics result in oscillations in the system even without external disturbances.…”

Section: Permanent Magnet Electro-dynamic Suspension System (Pm-eds)mentioning

confidence: 99%

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Electrical Components of Maglev Systems: Emerging Trends

2019

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Consistently rising environmental concerns and depleting petroleum resources have accentuated the need of sustainable, energy efficient and clean means of transport. This has provided the impetus to the research and development of clean alternatives for existing public transportation systems. Development of linear motor-propelled, contact-less maglev systems is considered a promising alternative to conventional on-wheel rail transport technology. Maglev technology primarily focuses on improving the performance, speed, fuel economy, driving range and operating cost of the transit system. These parameters vary with the design and efficiency of the electrical system used in maglev-based transportation systems. To present this study, firstly, a detailed survey of the important constituents of a maglev electrical system has been carried out with techno-economic perspectives. Contemporary maglev technologies have then explored along with their respective advantages and limitations. Electrical systems form the heart of maglev systems and, therefore, this paper presents the components of a standard electrical system together with the comparative analysis in terms of present trends, ongoing technological advancements and future challenges.

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“…However, the SCMs can conduct electricity during power failure. The Japanese MLX01 vehicle uses this levitation technology [15,16].…”

Section: Electro-dynamic Suspension System (Eds)mentioning

confidence: 99%

Section: Permanent Magnet Electro-dynamic Suspension System (Pm-eds)mentioning

confidence: 99%

Section: Permanent Magnet Electro-dynamic Suspension System (Pm-eds)mentioning

confidence: 99%

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Electrical Components of Maglev Systems: Emerging Trends

2019

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“…The coupling system of the TPSS and the locomotive is modeled through Matlab/Simulink. The locomotive model, 2 The extremum value of the ratio vp(j!) v ab (j!)…”

Section: A Comparative Simulation Studymentioning

confidence: 99%

Windowed SHE-PWM of Interleaved Four-Quadrant Converters for Resonance Suppression in Traction Power Supply Systems

Song

Konstantinou

Wang

et al. 2017

IEEE Trans. Power Electron.

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AC electric locomotives that use a number of interleaved four-quadrant converters (4QCs) generate high frequency switching harmonics which may stimulate certain resonances in traction power supply systems (TPSSs). A windowed selective harmonic elimination pulse-width modulation (SHE-PWM) method is proposed to suppress such resonances. Owing to the windowed design and the precalculated solutions, the proposed method covers the wide potential resonant frequency range and addresses the resonant frequency variation while keeping the low switching frequency of the traction converters. The proposed windowed SHE-PWM is fully tested with a closedloop controller in a simulation model with the TPSS and the ac electric locomotive. Comparative simulation results show that the windowed SHE-PWM is an effective alternative that overcomes the resonance suppression limitations of the conventional phase-shifted PWM (PS-PWM). The performance of proposed windowed SHE-PWM on an experimental equivalent resonant circuit is further evaluated and compared with PS-PWM. Both simulation and experimental results verify the effectiveness and feasibility of the proposed method.

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“…In recent years, high-speed electrified railway has reached a rapid development and has been considered as one of the economic booster indicators, granting the most secure land transportation mode in terms of freight and passenger transport [1]. However, and unfortunately, many power quality problems are caused by electric trains.…”

Section: Introductionmentioning

confidence: 99%

Topologies and Operation Modes of Rail Power Conditioners in AC Traction Grids: Review and Comprehensive Comparison

et al. 2020

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Electric locomotives in AC traction power systems represent a huge single-phase non-linear load and, detrimentally, affect the power quality and the efficiency of the three-phase power grid. Nevertheless, along the last decades, power electronics are being used to mitigate power quality problems in the three-phase power grid. In particular, Rail Power Conditioner (RPC) helps to increase the loading capacity of traction substations and improve the power quality of three-phase power grids. As the main characteristics, an RPC can supply reactive power, suppress current harmonics and overcome currents imbalance of the three-phase power grid. On the other hand, the traction substations may be constituted by different types of power transformers. For instance, single-phase power transformers and open-delta (V/V) power transformers are widely used, while Scott power transformers are less frequently used, since they are more complex and expensive. In this framework, this work presents a review study of RPC topologies, including their operation modes, and a comprehensive comparison between the characteristics of the RPC topologies when using different types of AC traction substations and power transformers. This helps to ensure the correct selection of the RPC topology for a specific application, according to the main structure of the traction substation. Consequently, and based on the established review, it is possible to sort and allocate each RPC topology for limited or wider applications.

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Faster than a Speeding Bullet: An Overview of Japanese High-Speed Rail Technology and Electrification

Cited by 29 publications

References 1 publication

Electrical Components of Maglev Systems: Emerging Trends

Electrical Components of Maglev Systems: Emerging Trends

Windowed SHE-PWM of Interleaved Four-Quadrant Converters for Resonance Suppression in Traction Power Supply Systems

Topologies and Operation Modes of Rail Power Conditioners in AC Traction Grids: Review and Comprehensive Comparison

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