scholarly journals Comparison of Electromagnetic Force Characteristics and Experiment of Pitching Moment in Permanent Magnet Linear Synchronous Motor According to the Moving Iron Core and Stator Topology

2015 ◽  
Vol 64 (12) ◽  
pp. 1695-1702
Author(s):  
Seung-Han Lee ◽  
Han-Wook Cho ◽  
Gyungho Khim ◽  
Jeong-Seok Oh
Keyword(s):  
Permanent Magnet ◽  
Electromagnetic Force ◽  
Synchronous Motor ◽  
Iron Core ◽  
Pitching Moment ◽  
Linear Synchronous Motor ◽  
Force Characteristics

Detent Force Modeling and Analysis for Vertical Permanent-Magnet Linear Synchronous Motor Using Equivalent Magnetic Network Method

2011 ◽  
Vol 143-144 ◽  
pp. 148-153 ◽  
Author(s):  
Xiao Zhuo Xu ◽  
Xu Dong Wang ◽  
Hai Chao Feng ◽  
Ji Kai Si
Keyword(s):  
Permanent Magnet ◽  
Equivalent Circuit Model ◽  
Synchronous Motor ◽  
Iron Core ◽  
Modeling And Analysis ◽  
Force Modeling ◽  
Detent Force ◽  
Linear Synchronous Motor ◽  
Calculation Results ◽  
Magnetic Network

This paper investigates the detent force modeling of a slotted iron core type vertical permanent magnet linear synchronous motor (PMLSM) for ropeless elevator applications. Variable network non-linear magnetic equivalent circuit model is established to predict the detent force of PMLSM. The topology structure of equivalent magnetic circuit is developed and the permeances are derived and calculated. The end effect of two end teeth is essential for analysis of detent force and it is focused in the modeling. Magnetic saturation of primary iron-core also be taken into account. In final some 3-D finite-element numerical calculation results are used to validate the feasibility of the proposed method.

Optimal Design of a Double-Sided Permanent Magnet Linear Synchronous Motor for Ropeless Elevator System

2013 ◽  
Vol 416-417 ◽  
pp. 99-103
Author(s):  
Li Ren Huang ◽  
Ji Wei Dong ◽  
Qin Fen Lu ◽  
Yun Yue Ye ◽  
Yi Chen
Keyword(s):  
Permanent Magnet ◽  
Low Cost ◽  
Element Model ◽  
Synchronous Motor ◽  
Underground Mines ◽  
Force Density ◽  
Iron Core ◽  
Linear Synchronous Motor ◽  
Deep Underground ◽  
Force Ripple

The ropeless elevator driven by linear motor is expected to be a new solution to vertical transportation of skyscrapers and the deep underground mines. Due to high thrust force density, low force ripple and low cost etc., a double-sided permanent magnet linear synchronous motor (DPMLSM) with slotted iron core and multi-segment primary is proposed and designed. Based on the erected 2D finite element model, the structure is optimized in order to reduce the detent force. Moreover, the influence of manufacture error on force performance is also investigated. It is shown the proposed DPMLSM is suitable for the ropeless elevator.

Analysis on the Pitching Moment in Permanent-Magnet Linear Synchronous Motor for Linear Motion Stage Systems

2016 ◽  
Vol 52 (7) ◽  
pp. 1-4 ◽  
Author(s):  
Kyung-Hun Shin ◽  
Seung-Han Lee ◽  
Han-Wook Cho ◽  
Cheol-Hoon Park ◽  
Jang-Young Choi ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Synchronous Motor ◽  
Pitching Moment ◽  
Linear Motion ◽  
Linear Synchronous Motor ◽  
Motion Stage

Analysis and Calculation of the Normal Force Fluctuations of Permanent Magnet Linear Synchronous Motor

2012 ◽  
Vol 588-589 ◽  
pp. 513-517
Author(s):  
Li Shen ◽  
Jian Rong Ning ◽  
Jia Kuan Xia ◽  
Jing Quan Cao
Keyword(s):  
Permanent Magnet ◽  
Electromagnetic Force ◽  
Normal Force ◽  
Synchronous Motor ◽  
Cnc Machine Tools ◽  
Feeding System ◽  
Magnetomotive Force ◽  
Analytical Expression ◽  
Force Fluctuation ◽  
Linear Synchronous Motor

Permanent Magnet linear synchronous motor (PMLSM) exist the problem of normal force fluctuation, especially in the servo feeding system of high-precision CNC machine tools. The normal force fluctuation can cause the feeding table in vibration and produce resonance with other moving components of the servo feeding system. It is produced by normal electromagnetic force wave acting on iron cores of PMLSM. In this paper, the analytical expression of normal electromagnetic force wave of single-side PMLSM is deduced with the method of MMF (magnetomotive force) magnetic permeance. And based on this, analyze composition and classification of the force wave component; the further study of the influences to the force wave order and amplitude when the coefficients of the electric machine are changed is done. Then, base on a PMLSM with 6 poles and 36 slots, the results of analytic calculation are accordant with the FEM simulation ones. These results prove the analytical expression is correct and accurate.

Development of High-Force-Density Iron-Core Linear Synchronous Motor

2012 ◽  
Vol 132 (4) ◽  
pp. 480-486 ◽  
Author(s):  
Masanobu Kakihara ◽  
Toshiyuki Hoshi ◽  
Toru Shikayama ◽  
Motomichi Ohto
Keyword(s):  
Synchronous Motor ◽  
Force Density ◽  
Iron Core ◽  
Linear Synchronous Motor

scholarly journals Research on the Non-Magnetic Conductor of a PMSM Based on the Principle of Variable Exciting Magnetic Reluctance

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 318
Author(s):  
Chunyan Li ◽  
Fei Guo ◽  
Baoquan Kou ◽  
Tao Meng
Keyword(s):  
Permanent Magnet ◽  
Electromagnetic Force ◽  
Electromotive Force ◽  
Permanent Magnets ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Magnetic Conductor ◽  
Critical Speeds ◽  
Motor Structure ◽  
Test Result

A permanent magnet synchronous motor (PMSM) based on the principle of variable exciting magnetic reluctance (VMRPMSM) is presented. The motor is equipped with symmetrical non-magnetic conductors on both sides of the tangential magnetized permanent magnets (PMs). By placing the non-magnetic conductor (NMC), the magnetic reluctance in the exciting circuit is adjusted, and the flux weakening (FW) of the motor is realized. Hence, the NMC is studied comprehensively. On the basis of introducing the motor structure, the FW principle of this PMSM is described. The shape of the NMC is determined by analyzing and calculating the electromagnetic force (EF) acting on the PMs. We calculate the magnetic reluctance of the NMC and research on the effects of the NMC on electromagnetic force, d-axis and q-axis inductance and FW performance. The critical speeds from the test of the no-load back electromotive force (EMF) verify the correctness of the NMC design. The analysis is corresponding to the test result which lays the foundation of design for this kind of new PMSM.

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