A Novel Model of Electromechanical Contactors for Predicting Dynamic Characteristics

Gongrun Wang, Yongxing Wang, Lifan Zhang, Shutian Xue, Enyuan Dong and Jiyan Zou
Additional contact information
Gongrun Wang: School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
Yongxing Wang: School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
Lifan Zhang: School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
Shutian Xue: State Grid Shenyang Electric Power Supply Company Ltd., Shenyang 110811, China
Enyuan Dong: School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
Jiyan Zou: School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China

Energies, 2021, vol. 14, issue 22, 1-15

Abstract: To ensure the reliability of power supply, a dual power supply structure appears in the power distribution system. Power supply switching is a complex physical process. This paper presents a novel model of electromechanical contactors. This model can simulate the multi-physics process of power switching. This article completes the simulation framework for power switching through contactors for the first time. Among them, the structural topology for contactors is also proposed. On the basis of the novel structure topology, an equivalent magnetic circuit model is established to calculate the relationship between driving force, flux linkage, current, and displacement. Then, a co-simulation model is established between the above equations and Adams to obtain the speed characteristics and flight time of the contactor. Subsequently, through the use of Fluent and its secondary development, a magnetohydrodynamic model is established, and the above-mentioned velocity characteristics are imported into it to analyze the arcing characteristics of the contacts under the conditions of the transverse magnetic field and the insulating grid. The effectiveness of power switching is judged by comparing the flight time of the electromechanical model and the arcing time of the magnetohydrodynamic model. The prototype is manufactured and tested on the basis of simulation. Through experimental waveforms and high-speed photography, the accuracy of the simulation model and the practicability of the contactor are verified.

Keywords: contactor; co-simulation; actuator; computational electromagnetics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/22/7466/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/22/7466/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:22:p:7466-:d:675060

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().