Characteristics of a bistable permanent magnet linear actuator with soft magnetic mover

2008 ◽  
Vol 27 (1-2) ◽  
pp. 43-52 ◽  
Author(s):  
Ivan Yatchev ◽  
Krastyo Hinov ◽  
Nikola Trifonov
Keyword(s):  
Permanent Magnet ◽  
Linear Actuator ◽  
Soft Magnetic

scholarly journals Simulation of the dynamic behaviour of a permanent magnet linear actuator

2010 ◽  
Vol 23 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Ivan Yatchev ◽  
Vultchan Gueorgiev ◽  
Racho Ivanov ◽  
Krastio Hinov
Keyword(s):  
Permanent Magnet ◽  
Dynamic Behaviour ◽  
Electric Circuit ◽  
Linear Actuator ◽  
Soft Magnetic ◽  
Mechanical Motion ◽  
Field Problem ◽  
Motion Problems ◽  
Long Stroke ◽  
The Magnetic Field

The paper presents simulation of the dynamics of a permanent magnet linear actuator with soft magnetic mover and relatively long stroke 60 mm. The simulation is carried out using decoupled approach where the magnetic field problem is solved separately from the electric circuit and mechanical motion problems. The obtained results are compared with experiment. .

A Novel Flux-Weakening Structure of High-Speed Permanent Magnet Motor Based on the Soft Ferrite

2013 ◽  
Vol 694-697 ◽  
pp. 1508-1511
Author(s):  
Xing Hua Wang ◽  
Xue Yuan Lin ◽  
Ming Hui Li ◽  
Yu Chen ◽  
Cheng Hui Zhang
Keyword(s):  
Permanent Magnet ◽  
High Speed ◽  
High Resistivity ◽  
Permanent Magnet Motor ◽  
Soft Magnetic ◽  
Low Loss ◽  
Magnetic Resistance ◽  
The Magnetic Field ◽  
Soft Ferrite ◽  
Flux Weakening

Soft ferrite has the characteristics of high permeability, high resistivity, low loss. Based on this, a new flux-weakening structure of high-speed permanent magnet motor was presented. The structure relies on changing the saturation of soft magnetic ferrite to change the equivalent magnetic resistance of permanent magnet magnetic circuit in the motor, so the main flux of the permanent magnet motor can be reduced. By the 3D Finite Element analyses, the magnetic field distribution characters in the air gap can be pointed out. The analysis results prove the flux-weakening method is presented in this paper is correct and feasible. It can provide a practical flux-weakening method of the high-speed PM motor.

scholarly journals Incremental Linear Switched Reluctance Actuator

2021 ◽  
Author(s):  
Aymen Lachheb ◽  
Lilia El Amraoui
Keyword(s):  
Permanent Magnet ◽  
Analytical Model ◽  
Special Interest ◽  
Magnetic Circuit ◽  
Force Density ◽  
Linear Actuator ◽  
Permanent Magnet Synchronous Motors ◽  
Switched Reluctance ◽  
Synchronous Motors ◽  
Electromagnetic Structure

Linear switched reluctance actuators are a focus of study for many applications because of their simple and robust electromagnetic structure, despite their lower thrust force density when compared with linear permanent magnet synchronous motors. This chapter deals with incremental linear actuator have switched reluctance structure. First, the different topologies of linear incremental actuators are mentioned. Furthermore, a special interest is focused on the switched reluctance linear actuator then the operating principal is explained. In addition, an analytical model of the proposed actuator is developed without taking account of the saturation in magnetic circuit. Finally, the control techniques that can be applied to the studied actuator are presented.

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