Motional Eddy Currents Analysis in moving solid iron using magnetic equivalent circuits method

Gholizad, H.; Mirsalim, Mojtaba; Mirzayee, M.; Tsukerman, Igor

doi:10.1109/wcacem.2005.1469642

Cited by 12 publications

(2 citation statements)

References 2 publications

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“…In [15], a solenoid (magnetic) valve system is modelled, for brakes employed in the automotive industry; in particular, the lumped parameter modelling of the electrical, electromechanical and mechanical subsystems is shown. Moreover, the motional Eddy-currents modelling is achieved through the Magnetic Equivalent Circuits method, based on an analytical description of the phenomenon [16]. In [17], the analytical model of an electromagnetic massive core brake actuator is based on magnetic and electric equivalent circuits of iron core, for which the lumped parameters are used for the evaluation of reluctances.…”

Section: Introductionmentioning

confidence: 99%

Development of efficient models of Magnetic Braking Systems of railway vehicles

Galardi

Meli

Nocciolini

et al. 2015

International Journal of Rail Transportation

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In modern railway vehicles, the use of Magnetic Braking Systems is continuously increasing, because they are characterized by high braking performances and low energy consumptions. Hence, the study and the accurate modelling of Magnetic Braking Systems is a very important issue, because they significantly affect the dynamics of vehicle and electrical supply circuit. Usually, the performances of Magnetic Braking Systems are evaluated on test-rigs in order to reduce times and costs of testing phases. For this reason, the authors focus on the development of a complete 3D model of Magnetic Brake System test-rig (built in COMSOL), including all the electromagnetic, circuital and mechanical parts. These parts are often studied separately in the literature; however, a combined analysis is crucial to correctly describe the behaviour of the whole system. The proposed model is highly modular (to describe different Magnetic Brake System test-rig layouts characterized by a different number of magnetic polar expansions) and aims at obtaining a compromise between accuracy and numerical efficiency. Subsequently, a second simplified lumped parameter model derived from the complete one and built in MATLAB is developed, to further reduce the computational load without decreasing the results accuracy. In this work, both the models have been developed and validated in collaboration Ferrovie dello Stato and compared with other simplified models present in the literature.

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Section: Introductionmentioning

confidence: 99%

Development of efficient models of Magnetic Braking Systems of railway vehicles

Galardi

Meli

Nocciolini

et al. 2015

International Journal of Rail Transportation

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“…In Document [3], it conducts analysis and comparison of magnetic circuit arrangement in plain structure and it points out to select relevant parameters to effectively control the amount of eddy current loss. In Document [4], it sets up the 3D finite element model of eddy current field for plain structure, calculates electromagnetic field distribution and summarizes the principle of selecting major parameters. In Document [5], it sets up 3D moving eddy current field's mathematical model for plain permanent eddy current coupler, analyzes the distribution of magnetic flux in conductor and distribution of eddy current and finishes the optimized design for relevant parameters of magnetic circuit.…”

Section: Introductionmentioning

confidence: 99%

Characteristic Analysis of Adjustable Permanent Magnetic Coupler with Slotted Conductor Disk

Gao¹,

Wang²,

Lin³

2015

IJSH

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It is essential to optimize the conductor surface vortex path because the efficiency of Permanent magnet governor depends on the excitation level of the induced current. In order to further improve efficiency, this article focuses on a permanent magnet governor with slotted conductor disk. The 2D and 3D dynamic simulation model are established and the characteristics of slotted and plain structure are analyzed. The results are shown that the vortex path of the permanent magnet governor with slotted structure is optimized, the magnetic flux leakage is reduced, and the thermal capacity is higher. The transmission torque mathematical model with temperature parameters is established considering the transmission torque. The transmission torque is affected by conductivity changing with the conductor disk heating. The effects of temperature changing and relative speed on torque transmission are analyzed. Finally, the torque characteristics of slotted and plain structure were compared by the experimental test under different conditions. It is proved that the slotted structure can improve the transmission efficiency and reduce the vortex field impact due to the temperature of conductor disk rising. And it is verified that the mathematical model is valid.

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Modeling and analysis of permanent magnetic driver with notched conductive plate

Gao

Lin

2014

The 26th Chinese Control and Decision Conference (2014 CCDC)

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Motional Eddy Currents Analysis in moving solid iron using magnetic equivalent circuits method

Cited by 12 publications

References 2 publications

Development of efficient models of Magnetic Braking Systems of railway vehicles

Development of efficient models of Magnetic Braking Systems of railway vehicles

Characteristic Analysis of Adjustable Permanent Magnetic Coupler with Slotted Conductor Disk

Modeling and analysis of permanent magnetic driver with notched conductive plate

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