Study of a Null-Flux Suspension System Using Permanent Magnet Halbach Arrays

2020 ◽  
Author(s):  
Thais Nascimento Franca ◽  
Hongfu Shi ◽  
Zigang Deng ◽  
Richard Magdalena Stephan
Keyword(s):  
Permanent Magnet ◽  
Suspension System ◽  
Halbach Arrays

scholarly journals Improvement of Zero Suspension Force Performance Using a Special Magnet for a Magnetic Suspension Device

2011 ◽  
Vol 2-3 ◽  
pp. 1099-1104
Author(s):  
Feng Sun ◽  
Koichi Oka ◽  
Jun Jie Jin
Keyword(s):  
Permanent Magnet ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Attractive Force ◽  
Special Shape ◽  
Comparison Results ◽  
Improvement Method ◽  
Magnetic Suspension System

This paper proposes an improvement method of zero suspension force performance using a special permanent magnet for a magnetic suspension device. The zero suspension force of a permanent magnetic suspension device is indispensable for floating off when the suspended object is stuck on accidentally. Generally, the magnetic suspension system using permanent magnet is difficult to realize the zero suspension force, since the permanent magnet cannot make its attractive force zero. However, the proposed magnetic suspension device has realized the semi-zero power suspension and semi-zero suspension force, which mainly consists of a disk-shape permanent magnet, two “F” shape iron cores, a suspended object, and an actuator. In the magnetic suspension device, since there is magnetic leakage, the suspension force could not be made exact zero. Therefore, in this paper, the zero suspension force will be improved using a special shape permanent magnet. The comparison results indicate that the zero suspension force is decreased about 80 percent.

Permanent Magnet Tubular Generator with Quasi-Halbach Array for Free-Piston Generator System

2017 ◽  
Vol 8 (4) ◽  
pp. 1663
Author(s):  
Behrooz Rezaeealam
Keyword(s):  
Permanent Magnet ◽  
Single Phase ◽  
Optimization Technique ◽  
Imperialist Competitive Algorithm ◽  
Fe Model ◽  
Generator System ◽  
Free Piston ◽  
Halbach Array ◽  
Nonlinear Transient ◽  
Halbach Arrays

In this paper, the performance of a free-piston generator system with tubular single-phase stator winding is investigated for three different configurations of permanent magnet arrays on the mover: radial, rectangular quasi-Halbach and trapezoidal quasi-Halbach arrays. The optimal shape of the rectangular quasi-Halbach magnetization is obtained by employing an optimization technique called Imperialist Competitive Algorithm (ICA), and the results are compared with the previously developed permanent magnet linear generator (PMLG) with magnets of radial magnetization. Then, the resultant design of rectangular quasi-Halbach array, is changed to trapezoidal quasi-Halbach array and its performance is compared with other types of magnet arrays. The employed ICA is based on the analytical model of the magnetic flux distribution in air-gap, and is further verified by a nonlinear transient finite element (FE) model. The FE model has been developed to study the performance of the reciprocating PMLG. The accuracy of the proposed FE model is exemplified by comparing the calculated results with the experimental ones regarding the PMLG with radial magnetization.

Analysis of End Pole Sizing Effects in Linear Permanent Magnet Synchronous Actuators with quasi-Halbach Arrays

2019 ◽  
Author(s):  
Ben Hur B. Boff ◽  
Rodrigo B. Tavares ◽  
Aly F. Flores Filho ◽  
Paulo R. Eckert
Keyword(s):  
Permanent Magnet ◽  
Halbach Arrays

Dvelopment for 2 d.o.f. suspension system using permanent magnet

2003 ◽  
Vol 2003.41 (0) ◽  
pp. 287-288
Author(s):  
Keiji Masaki ◽  
Koichi Oka
Keyword(s):  
Permanent Magnet ◽  
Suspension System

Magnetic Force for 2 DOF Suspension System Using Permanent Magnet

2002 ◽  
Vol 2002.40 (0) ◽  
pp. 343-344
Author(s):  
Keiji Masaki ◽  
Koichi Oka
Keyword(s):  
Permanent Magnet ◽  
Magnetic Force ◽  
Suspension System
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