Study on dynamic coupling characteristics of thrust and levitation force of long stator linear synchronous motor for maglev train

Rao, Jian; Wang, Ke

doi:10.1109/icems.2017.8055995

Cited by 11 publications

(3 citation statements)

References 9 publications

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“…Literature [7] on the basis of analyzing the air gap magnetic field distribution of linear motor, the influence of linear motor on the surface magnetic field distribution of the vehicle body is studied by the joint simulation method of Simplorer and Maxwell. In the aspect of dynamic cross-coupling of thrust and levitation force, the coupling effect of armature reaction of linear motor and excitation current fluctuation of running train is studied [8]. In order to study the influence of eddy current effect on maglev train, the control model is established by linearization method and PD control algorithm, and the attenuation effect of eddy current effect on levitation force is analyzed [9].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis and Optimization of High-speed Maglev Linear Synchronous Motor Based on Field-circuit Coupling

Cao

Deng

et al. 2022

Trans. Electr. Mach. Syst.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis and Optimization of High-speed Maglev Linear Synchronous Motor Based on Field-circuit Coupling

Cao

Deng

et al. 2022

Trans. Electr. Mach. Syst.

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“…The thrust and levitation force control of the LSLSM is a key point in evaluating the performance of the maglev train [4]. Therefore, high-performance decoupling control between the thrust and normal forces in LSLSMs for maglev systems is required [5], and when it is satisfied, the safety The associate editor coordinating the review of this manuscript and approving it for publication was Pietro Savazzi .…”

Section: Introductionmentioning

confidence: 99%

A Position Estimator Using Kalman Filter With a Data Rejection Filter for a Long-Stator Linear Synchronous Motor of Maglev

Lee

et al. 2020

IEEE Access

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As a maglev levitates with a small air gap and runs very fast, securing the levitation system's stability is crucial. Thus, the high-performance decoupling control between the propulsion control system and the levitation system is of critical importance. The study described in this paper focuses on a high-performance position estimator that minimizes the dynamic coupling between the levitation system and propulsion system in a maglev's propulsion control system using a long-stator linear synchronous motor. To that end, a position estimator using a Kalman filter was designed. Then the stability of the designed filter and its characteristics and problems that result from the change in the measurement covariance value were identified through a stability analysis of the Kalman filter. Moreover, in an attempt to improve it, a Kalman filter with a data rejection filter was proposed. Afterward, to verify the performance of the proposed position estimator, a maglev train model was fabricated and for each Kalman filter measurement covariance value, the dynamic coupling between the propulsion control system and the levitation system was identified through the test. For the Kalman filter using a data rejection filter, it was confirmed that the propulsion control system could minimize the influence on the levitation system when an inaccurate position of the vehicle is renewed. INDEX TERMS Influence of electromagnetic suspension system, Kalman filter, long stator linear synchronous motor, maglev, position estimation techniques.

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“…Maglev system utilizing long stator linear synchronous motor (LSLSM) propulsion and electromagnetic suspension has been applied in normal commercial operation [1][2][3]. The electromagnetic force that makes the train suspend upon the track is produced by the excitation magnetic field.…”

Section: Introductionmentioning

confidence: 99%

A special excitation system for analysis of coupling characteristics of thrust and levitation force of maglev train

Rao

Wang

et al. 2018

Transportation Systems and Technology

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Background: In the maglev train propelled by long stator linear synchronous motor (LSLSM), the thrust characteristics are one of important points to evaluate the performance of the system. However, coupling effect exists between the propulsion and levitation system. Therefore, the interference from the levitation system must be considered when the propulsion system is designed. Aim: The article focus on the analysis of coupling characteristics of thrust and levitation force of maglev train, and a special excitation system is designed for the study. Methods: In order to study the thrust performance under the fluctuating air gap field under laboratory conditions, a rotating synchronous motor has been designed to imitate the long stator linear synchronous motor applied in high speed maglev train. And a special excitation system is designed for the rotating synchronous motor, which can simulate the fluctuation of the exciting current during the actual operation of maglev train. The air gap of the rotating synchronous motor is kept as constant, and the fluctuating excitation current is added to the excitation winding of the rotating synchronous motor, thus the simulation of air gap magnetic field variation is achieved. Results: The special excitation system of the experimental motor is introduced in detail. Conclusion: The relationship between thrust and levitation force of long stator linear synchronous motor (LSLSM) in maglev train is strong coupling, non-linear, and dynamic. Complete decoupling of thrust and levitation force is not easy to be achieved. The experimental platform has been built to study the coupling characteristics of thrust and levitation force of maglev train.

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Study on dynamic coupling characteristics of thrust and levitation force of long stator linear synchronous motor for maglev train

Cited by 11 publications

References 9 publications

Electromagnetic Analysis and Optimization of High-speed Maglev Linear Synchronous Motor Based on Field-circuit Coupling

Electromagnetic Analysis and Optimization of High-speed Maglev Linear Synchronous Motor Based on Field-circuit Coupling

A Position Estimator Using Kalman Filter With a Data Rejection Filter for a Long-Stator Linear Synchronous Motor of Maglev

A special excitation system for analysis of coupling characteristics of thrust and levitation force of maglev train

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