LOW VOLTAGE APPARATUS ›› 2022, Vol. 0 ›› Issue (11): 9-13.doi: 10.16628/j.cnki.2095-8188.2022.11.002

• Research & Analysis • Previous Articles     Next Articles

Characteristics and Application of Permanent Magnet Loop Return Magnetic System

LIU Guilin1, XIE Yong2, LIANG Huimin1, KEZHANG Hongda3, XIE Yuanhao2, CAI Zhaowen2   

  1. 1. Institute of Reliability in Electrical Apparatus and Electronics,Harbin Institute of Technology,Harbin 150001, China
    2. Guilin Aerospace Electronics Co.,Ltd., Guilin 541000, China
    3. Shenyang Railway Signal Co.,Ltd., Shenyang 110026, China
  • Received:2022-05-21 Online:2022-11-30 Published:2023-01-04

Abstract:

Aiming at the permanent magnet loop return magnetic system,its typical structure,equivalent magnetic circuit and mathematical model are comprehensively analyzed from the perspective of magnetic pressure and magnetic flux,and its main characteristics are obtained.Based on the traditional snap-fit magnetic system,a new type of permanent magnet loop return type magnetic system is constructed.Its working principle is analyzed from the perspective of magnetic flux,and a finite element simulation model is constructed to obtain its suction characteristics.Finally,the new permanent magnet loop returning magnetic system structure is simulated and verified,so as to expand the application field of the permanent magnet loop return magnetic system and meet the needs of users to reduce the pull-in voltage and increase the release voltage.

Key words: permanent magnet loop return magnetic system, magnetic pressure, magnetic flux, suction characteristic, simulation

CLC Number: