Optimum Design of Square Air-Core Electromagnetic Coil System

Abstract

Designs of electromagnetic (EM) coil have attracted a lot of attention in the research community due to its applications in several areas of human endeavours. However, the optimal selection of coil wire size and current in the design of Square Air-Core Multi-turn Multilayer Electromagnetic Coil (SAMMEC) with significant wire diameter for both safe and cost-effective products has not been given enough research attention. Therefore, the equation for the flux density produced by a rectangular loop of wire was adopted in the modelling of SAMMEC with significant wire diameter. A coil design chart was constructed based on the developed model and design specifications. Both the feasible and non-feasible design regions and the line of optimum magnetic flux density were identified on the constructed chart. The appropriate wire size and current for the coil were both determined from the design-chart. The diameter, length, resistance, copper loss, and weight of the selected wire for the generation of 0.06 T flux density were found to be 0.00326 m, 267.01 m, 0.5502 Ω, 263.87 W, and 19.86 kg respectively. The selected wire can produce an optimum flux density of 0.066 T with current of 24 Amp and associated copper loss of 316.92 W. Keywords—Air core, Electromagnetic coil, Magnetic flux density, Multilayer, Multi-turn

Effect of Magnetic Field Pre-treatment on the Fibre Content of Sweet Pepper and Fluted Pumpkin Leaves

“…The guidelines given on the acceptable limits of exposure of different parts of human beings to magnetic field are 2 -8T for head, trunk and limbs, and 400 mT for any part of the body (ICNIRP, 2009). Ajiboye et al (2021) worked on the optimal selection of wire size for the coil and current required to design an electromagnetic component (which is capable of being used for different applied purposes). The optimum flux density and current obtained were 0.066T and 24A respectively.…”