Electromagnetic Design of Ironless Permanent Magnet Synchronous Linear Motor

Ferková, Želmíra; Franko, Marek; Kuchta, Jozef; Rafajdus, Pavol

doi:10.1109/speedham.2008.4581085

Cited by 26 publications

(12 citation statements)

References 4 publications

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“…Investigated performances are in accordance with analytical design that was described in [4,5]. In generally, the most know position system is a cascade structure including several superimposed control loops for force, speed and position.…”

Section: Motor Loading Characteristicssupporting

confidence: 62%

Experimental verification of drive with segment slotless synchronous motor with permanent magnet

Franko

Grman

Hrasko

et al. 2009

2009 35th Annual Conference of IEEE Industrial Electronics

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A series of measurements like measurement of moment characteristics, moment of inertia and loading characteristics and also measurements of servo drive performances are presented in this paper. The first part of measurement should to confirm agreement with calculated electrical parameters. Second part of measurements should to confirm drive performance (quality) such as accuracy, repeatability, stabilization test and etc. A comparison between measurement results and final specified parameters are given in the last.

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Section: Motor Loading Characteristicssupporting

confidence: 62%

Experimental verification of drive with segment slotless synchronous motor with permanent magnet

Franko

Grman

Hrasko

et al. 2009

2009 35th Annual Conference of IEEE Industrial Electronics

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show abstract

“…Bring the (7) and (8) into the formula (13) and (14), flux density in region I and region II can be acquired by…”

Section: Theory Foundation Of Single Sided Ipmlsmmentioning

confidence: 99%

“…Furthermore, this novel medium-speed maglev train adopt U-shaped electromagnet levitation make sure the advantages of simple structure and low cost, the propulsion and levitation systems are independent of each other. Compared with single-sided ironless PMLSM, many researchers focus on double-sided ironless PMLSM [13][14][15][16][17][18][19], it N has advantages of low thrust fluctuation, high positioning precise, high dynamic performance, etc. The structure as fig.2 shows, it includes long stationary secondary and short motive primary usually, there is no normal force between primary and secondary because of ironless coil.…”

mentioning

confidence: 99%

“…Researches mainly focus on analytical and finite element method or combined two methods, Literature [18] base on magnetic vector potential equation and boundary conditions, flux density distribution induced by the permanent magnet array is analysed analytically, thrust characteristics are obtained analytically and compared with the finite element simulation results. Paper [13,19] deals with the electromagnetic design of double-sided ironless PMLSM for various geometrical configurations of primary and secondary parts by means of Finite Element method in 2D and 3D, the results are in very good coincidence. The main drawback to short primary double-sided doublesided ironless PMLSM is mover cannot travel too far owing to the moving supply cable.…”

mentioning

confidence: 99%

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Characteristics investigation of single-sided ironless pmlsm based on halbach array for medium-speed Maglev train

Zhang

Shi

Wang

et al. 2017

Trans. Electr. Mach. Syst.

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This paper investigates characteristics of ironless permanent magnet linear synchronous motor (PMLSM) based on Halbach array used for medium-speed (200km/h) maglev train. Long primary ironless coil is laid in the middle of track and the Halbach permanent magnet array is attached to the bottom of each bogie as a source of traction, U-shape electromagnets at the both sides of the train for levitation. Two dimensional analytical model of single-sided ironless PMLSM based on Halbach array is established, using linear overlay method, the no-load air gap magnetic field is calculated firstly, winding current density distribution is obtained for calculating the characteristics of thrust and normal force against power angle, including force characteristics with equal and unequal pole pitch, the influence of steel sleeper, etc. Besides, the mathematical model for this type motor is built by 3D finite element method, the traction characteristics of medium-speed maglev under maximum speed 200km/h are calculated. The characteristics of this type motor are satisfactory owing to there is no detent force in the motor and thrust force reach maximum meanwhile normal force can be eliminated. Calculation method is verified by comparing finite element results, experimental result on a 200kW type motor further validates the accuracy of calculation and some important conclusions are obtained. Index Terms-Fore characteristics, Halbach array, medium-speed Maglev, Single-sided ironless PMLSM. I. INTRODUCTION OWADAYS, maglev train has successful commercial operation in the world [1-12]. It is represented by Shanghai high-speed (430km/h) maglev train and Nagoya low-speed (100km/h) HSST. Shanghai maglev train adopts normal conducting magnetic levitation technology of Germany, which adopts long primary linear synchronous motor (LSM) as traction power, the maglev vehicles are suspended by the attractive force between the electromagnets and primary core (EMS), this type maglev train is more suitable for high speed operation due to long primary LSM and additional guidance electromagnets. Other high-speed maglev train, such as the Japanese MLX utilizes superconducting electro-dynamic

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“…Vector's potential driven by thin current turn can be written as (10) For better explanation of (10), see [1]. Magnetic flux of two round wires are shown in (fig.…”

Section: Mathematical Calculationmentioning

confidence: 99%

Verification of a mutual inductance calculation between two helical coils

Piri

Jaros

Frivaldský

2015

2015 16th International Scientific Conference on Electric Power Engineering (EPE)

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This paper deals about verification process of calculation of a mutual inductance between two helical coils. Nowadays, there are many procedures how to compute mutual inductance between two coils. The main approach of proposed paper is exact specification of the formula, which may be used for the determination of the mutual inductance.First the overview of mathematical derivation is described, and final formula for computation is being determined. Based on this formula, mutual inductance for two physical helical coils for wireless energy transfer is defined. The confirmation of validity of proposed formula is consequently verified with measurement.

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Electromagnetic Design of Ironless Permanent Magnet Synchronous Linear Motor

Cited by 26 publications

References 4 publications

Experimental verification of drive with segment slotless synchronous motor with permanent magnet

Experimental verification of drive with segment slotless synchronous motor with permanent magnet

Characteristics investigation of single-sided ironless pmlsm based on halbach array for medium-speed Maglev train

Verification of a mutual inductance calculation between two helical coils

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