Design and realization of a PM linear synchronous motor with a very high thrust/normal force ratio

The permanent magnet linear synchronous motor (PMLSM) has a good application prospect due to many significant advantages such as high speed, high precision, high thrust force density, simple structure, energy saving and reliable operation etc., so the research and development are of great importance. This paper mainly focuses on the key design points of a double-sided water-cooled PMLSM. According to the required thrust force, the design is given out including the basic structure parameters, winding connection methods and water cooling system. Based on the erected finite-element model, the performances such as back-EMF, thrust force, normal force, power factor and efficiency are predicted. By comparing with a single-sided PMLSM with the same specifications, it is proved that this double-sided PMLSM has lower thrust force ripple and higher thrust force density. Moreover, the net normal force of its mover is almost zero. Finally, the predicted back-EMF is verified by measurement.

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A Study on the Structure of Linear Synchronous Motor for 600km/h Very High Speed Train

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.416-417.317 ◽

2013 ◽

Vol 416-417 ◽

pp. 317-321 ◽

Cited By ~ 2

Author(s):

Chan Bae Park ◽

Byung Song Lee ◽

Jae Hee Kim ◽

Jun Ho Lee ◽

Hyung Woo Lee

Keyword(s):

High Speed ◽

Type System ◽

Synchronous Motor ◽

Propulsion System ◽

Contact Method ◽

High Speed Train ◽

Maglev Train ◽

Railway Systems ◽

Linear Synchronous Motor ◽

Very High

Recently, an interest in a hybrid system combining only the merits of the conventional wheel-rail system and Maglev propulsion system is growing as an alternative to high-speed maglev train. This hybrid-type system is based on wheel-rail method, but it enables to overcome the speed limitation by adhesion because it is operated by a non-contact method using a linear motor as a propulsion system and reduce the overall construction costs by its compatibility with the conventional railway systems. Therefore, a comparative analysis on electromagnetic characteristics according to the structural combinations on the stator-mover of Linear Synchronous Motor (LSM) for Very High Speed Train (VHST) maintaining the conventional wheel-rail method is conducted, and the structure of coreless superconducting LSM suitable for 600 km/h VHST is finally proposed in this paper.

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Detent Force, Thrust, and Normal Force of the Short-Primary Double-Sided Permanent Magnet Linear Synchronous Motor With Slot-Shift Structure

IEEE Transactions on Energy Conversion ◽

10.1109/tec.2019.2915821 ◽

2019 ◽

Vol 34 (3) ◽

pp. 1411-1421 ◽

Cited By ~ 1

Author(s):

XuZhen Huang ◽

TianPeng Ji ◽

LiYi Li ◽

Bo Zhou ◽

ZhuoRan Zhang ◽

...

Keyword(s):

Permanent Magnet ◽

Normal Force ◽

Synchronous Motor ◽

Detent Force ◽

Linear Synchronous Motor

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Thrust Study of a Novel PM Linear Synchronous Motor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.764-765.408 ◽

2015 ◽

Vol 764-765 ◽

pp. 408-412

Author(s):

Wan Tsun Tseng ◽

Yi Chang Wu ◽

Li Iau Su

Keyword(s):

Synchronous Motor ◽

The Finite Element Method ◽

Linear Synchronous Motor ◽

Tooth Width ◽

New Findings ◽

New Type ◽

Core Sets ◽

Parameter Values ◽

High Thrust ◽

Novel Design

This paper presents an analysis of a new type of permanent magnet excited transverse flux linear synchronous motor (PMTFLSM). This linear motor achieves a high thrust from its novel design and fabric. Its translator consists of cross-shaped core sets. Considering parameters such as magnet dimension, pole pitch, and tooth width of the translator, the effected thrust is analyzed and simulated with a 2D model of our PMTFLSM using the finite element method. Extensive simulations were conducted to investigate how the motor performs under a variety of parameter settings. Accordingly, motor characteristics are identified whereby an optimal combination of parameter values can be found. The new findings are then fed back to our motor design to validate performance improvement.

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