Temperature Field Analysis of Primary Permanent Magnet Linear Motor with Magnetic Barrier Coupling

Objective: Ironless, permanent magnet, synchronous linear (IPMSL) motors are applied widely in precision servo control for the nonexistence of cogging forces and comparatively small fluctuations in thrust and speed. Method: The air and water cooling structures are designed by assuming the heat loss in the motor operations is the source for the distribution of the temperature field in the analysis under natural cooling. Conclusion: The temperature fields of the linear motor under the two cooling modes are compared and analyzed, which helps monitor the temperature of linear motors during development and operations.

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Dynamic Simulation of a Direct Drive Reversing Valve Based on the Hydraulic Die Forging Hammer

Volume 7: Fluids Engineering ◽

10.1115/imece2016-66024 ◽

2016 ◽

Author(s):

Muzhi Zhu ◽

Shengdun Zhao

Keyword(s):

Permanent Magnet ◽

Control Volume ◽

Linear Motor ◽

Field Analysis ◽

Magnetic Flux Density ◽

Direct Drive ◽

Force Analysis ◽

Fluid Force ◽

Die Forging ◽

Permanent Magnet Linear Motor

The direct drive reversing valve is designed in this paper to replace the main reversing valve of the hydraulic die forging hammer system, and a new drive method based on TPMLM (tubular permanent magnet linear motor) is suggested. To verify the feasibility of the drive method, the fluid force suffered by valve core is calculated by using control volume method. After that, force analysis is carried out on the valve core. Based on FLUENT, the flow field analysis inside the valve is conducted. And then theoretical calculation and simulation on the fluid force analysis are discussed. TPMLM (tubular permanent magnet linear motor) is selected as the driving device and it is analyzed by Maxwell 2D. The simulation results of TPMLM show that the magnetic flux density, back electromotive force and output force satisfy the requirement of the reversing valve.

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Presentation of E-core transverse-flux permanent magnet linear motor and its no-load magnetic field analysis based on Schwarz-Christoffel transformation

2016 IEEE Conference on Electromagnetic Field Computation (CEFC) ◽

10.1109/cefc.2016.7816036 ◽

2016 ◽

Author(s):

Dongshan Fu ◽

Yanliang Xu ◽

Jinlin Gong

Keyword(s):

Magnetic Field ◽

Permanent Magnet ◽

Linear Motor ◽

Field Analysis ◽

Magnetic Field Analysis ◽

Permanent Magnet Linear Motor ◽

Transverse Flux ◽

Christoffel Transformation

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Permanent Magnets Design and Magnetic Field Analysis of a Novel Permanent Magnet Linear Motor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.569.356 ◽

2012 ◽

Vol 569 ◽

pp. 356-362

Author(s):

Gong Zhang ◽

Zhan Gong Xie ◽

Xian Shuai Chen ◽

Xue Feng Zhou

Keyword(s):

Magnetic Field ◽

Permanent Magnet ◽

Permanent Magnets ◽

Linear Motor ◽

Field Analysis ◽

Air Gaps ◽

Magnetic Field Analysis ◽

Output Force ◽

Array Structures ◽

Permanent Magnet Linear Motor

In order to improve the output force characteristics of permanent magnet linear motor (PMLM), studied from permanent magnets (PMs) structure that is the key component of PMLM, different magnetization methods of single PM and different array structures of multiple PMs are compared, and a novel PMLM magnetized alone the external field force lines using 8 pieces tegular Halbach magnet array with air gaps is proposed as well. The analysis on magnetic field of PMLM shows that the force between the coil and the single PM increases by more than 40%, and the average magnetic induction in coil centre generated by the 8 pieces Halbach magnet array arrives at the maximum value, 10% higher than that of 1 piece structure.

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