Performance of Linear Motor Type Rail Brake Using Roller Rig Test Bench

Sakamoto, Yasuaki; Kashiwagi, Takayuki; Hasegawa, Hitoshi; Sasakawa, Takashi; Karino, Yasushi

doi:10.2219/rtriqr.53.41

Cited by 6 publications

(11 citation statements)

References 2 publications

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“…Figure 8 shows the braking force characteristics corresponding to the slip-frequency. Although a measured value is in the slip-frequency range lower than the practical use Type A 30 km/h range, the measured value agrees with the designed value and the estimated value from bench tests [2] [4]. This shows that the LIM-type rail brake would be able to generate the target braking force of 5 kN in future practical use.…”

Section: Excitation Systemsupporting

confidence: 60%

“…Stationary tests on a roller rig were carried out to determine the new design's thermal and electromagnetic characteristics for speeds up to 300 km/h, to confirm the excitation system and its control method. The results demonstrated that in practice it met with design criteria [2]. In the subsequent study presented in this report, results of trials carried out on a prototype of the linear-motor-type (LIM-type) rail brake fitted to an actual railway vehiclebogie and subjected to braking tests on tracks in a yard are described, and design considerations for practical use are discussed.…”

Section: Introductionmentioning

confidence: 87%

“…A control method for an excitation system shown in reference [2] was improved for practical use. These were installed in the test vehicle R291 [3], which was subjected to braking tests on yard tracks and the characteristics were evaluated.…”

Section: Introductionmentioning

confidence: 99%

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Development of a Rail Brake Derived from Linear Motor Technology

Sakamoto

Kashiwagi

Yoneyama³

et al. 2014

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Section: Excitation Systemsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 87%

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Development of a Rail Brake Derived from Linear Motor Technology

Sakamoto

Kashiwagi

Yoneyama³

et al. 2014

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“…To evaluate the braking performance of the LIM-ECB system and verify the stability of the generating power control by changing the excitation frequency as shown above, roller-rig bench tests were conducted [1,3] using an arcshape armature as shown in Fig. 5.…”

Section: Achievements From Past Developmentsmentioning

confidence: 99%

“…The disadvantage of this braking system however, is that tracks can heat up because of the Joule-heating effect of the eddy current that is equal to the deceleration energy of the vehicle. To offset this disadvantage, a LIM-type eddy-current rail brake system (LIM-ECB) was developed that has an armature excited by three phase AC instead of a DC electromagnet [1][2][3][4]. This system operates as a liner induction motor (LIM) and generates the excitation power itself by using braking energy.…”

Section: Introductionmentioning

confidence: 99%

<b>Study on Miniaturization and Weight Reduction for the Application of LIM-type Eddy-current Rail Brakes to High-speed Trains</b>

et al. 2017

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Takashi SASAKAWA Maglev Systems Technology DivisionTo apply LIM-type eddy-current rail brakes to high-speed trains, it is necessary to miniaturize and reduce the weight of their armature mounted on bogies. This paper therefore considers reducing the volume of the iron core, taking into account the need to maintain braking performance at high speed, which has a great effect on braking distance. Electromagnetic field analysis was then used to verify the braking performance of the miniaturized armature by comparing it with armatures developed to perform well at low speed.

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Analyses of an AC Linear Actuator for Cross-Wind Stabilisation and Rail Stress Reduction

Holtmann

2018

2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles &Amp; Interna

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High-speed trains in light weight design require an actuator for crosswind stabilisation. Also rail stresses due to heat generation by linear eddy current brakes (LECB) are still in discussion. This paper deals with the concept and design method of an AC linear actuator for crosswind stabilisation and the reduction of rail heating. The linear actuator analysed in this work is first optimized for a maximum normal force for a given installation space and different pole pair numbers using an analytical approach. In a second step the brake force is analysed for different pole pair numbers with a harmonic 2-D-FEM analyses. To demonstrate the potential reduction of the rail temperature compared by using the linear eddy current brake of the ICE-3, a transient thermal 1-D-simulation of the rail head is done by using the heat generation rate of the harmonic 2-D-FEM analyses. The results show that the required normal force for crosswind stabilization determined in the previous work can be achieved. With the constraints that two ICE-3 units passes the rail at maximum speed and braking force, the rail temperature can be reduced by 55 • C compared to using the LECB of the high speed train ICE-3 of the German Railway (Deutsche Bahn).

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Performance of Linear Motor Type Rail Brake Using Roller Rig Test Bench

Cited by 6 publications

References 2 publications

Development of a Rail Brake Derived from Linear Motor Technology

Development of a Rail Brake Derived from Linear Motor Technology

<b>Study on Miniaturization and Weight Reduction for the Application of LIM-type Eddy-current Rail Brakes to High-speed Trains</b>

Analyses of an AC Linear Actuator for Cross-Wind Stabilisation and Rail Stress Reduction

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