LOW VOLTAGE APPARATUS ›› 2023, Vol. 0 ›› Issue (10): 44-48.doi: 10.16628/j.cnki.2095-8188.2023.10.007

• Detection & Experiment • Previous Articles     Next Articles

Design on Testing System for Pull-in Characteristics of AC Electromagnet

GU Zhihao1, GUO Jing2, ZHANG Chao1, DU Qingfeng1, REN Wanbin1   

  1. 1. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
    2. Unit 92727,PLA,Changzhi 046000,China
  • Received:2023-06-21 Online:2023-10-30 Published:2023-11-23

Abstract:

The pull-in action of AC electromagnet directly determines its work performance and electrical on-off control performance.The novel testing system for the pull-in characteristics of AC electromagnet is designed. The highlights include the adjustable magnetic gap, the controllable closing phase angle and the simultaneous measurement of coil voltage, coil current and dynamic force. Finally, taking the electromagnetic system of AC contactor as an example, the typical waveforms of the pull-in process of AC electromagnet are recorded and analyzed, and the effects of the point-on-wave on collision force and pull-in time are investigated.

Key words: AC electromagnet, pull-in characteristics, collision force, pull-in time, closing phase angle

CLC Number: