Analysis and Improvement of Modeling of Electromagnetic Actuator for Medium Voltage Gas Insulated Switchgear

作者：Tseng Kuo Hsiung^*; Shiao Yong Fong; Cheng Pei Yu; Xu Zon Zhi

来源：Electric Power Components and Systems, 2014, 42(14): 1576-1586.

DOI：10.1080/15325008.2014.943438

• finite element method
• electromagnetic actuator
• magnetic field
• trip coil

This study aimed to improve the acting magnetic force of an electromagnetic actuator for medium voltage gas insulated switchgear. First, a mathematical model was constructed based on the physical phenomena of an electromagnetic actuator in the fields of electric, magnetic, and mechanical energy. Then, ANSYS finite element software was used to calculate changes in the distribution of the magnetic field intensity and magnetic flux density of the electromagnetic actuator. The ANSYS simulation results were validated by numerical values derived from Matlab and experimentation. The factors influencing normal thrust were determined, including setting different working clearances, changing the size of the iron yoke of the electromagnetic actuator, magnetic material ratio, and the configuration of the movable axle center. The optimal characteristics were obtained by integrating the improved design. The integrated simulation of the improved iron yoke, silicon steel, and coil position was compared with the original model. The results suggested that the magnetic force significantly improved at a working clearance of 19.1, 10, and 2mm, respectively, which nearly doubled the magnetic force of the original design.

• 出版日期2014-10-26