Simple-Box-9 Coil System: A Novel Approach to Design of a Square Coil System for Producing Uniform Magnetic Fields

Abstract

This paper presents a novel approach for the design of square coil system, through considerations of a conventional square coil system. This simple approach allows us to design a coil system which contains a greater number of coils. From this design method, we introduce a new structure system of same-sized square coils, Simple-Box-9. The constant coil spacing is a fourth-part of the side length of the coil, and the number of windings is 2/1/1/1/1/1/1/1/2. From numerical calculations and experiments, it is shown that Simple-Box-9 can achieve the best uniformity compared with conventional square coil systems.

Estimation of Effective Permeability for Dumbbell-Shaped Magnetic Cores

“…3 shows the schematic diagram of the experimental setup. An uniform magnetic field with magnetic flux density of 1 µT at 60 Hz was generated by Simple-Cubic-3 coil system [13]. The measured value of µeff was calculated from the following equations:…”

Desktop Magnetic Shielding System for the Calibration of High-Sensitivity Magnetometers

“…3 shows the configuration of the experimental setup for the measurement of the shielding factor. For the measurement, we used our developed Simple-Cubic-3 coil system (SC3) [13]. SC3 consists of three square coils connected in series, with a distance of half the side length of the coil.…”

Leakage Flux Recovery Coil for Energy Harvesting Using Magnetoplated Wire

“…The Qf of the leakage flux recovery coil using COW and MPW at frequency f = 250 kHz was 30.3 MHz and 33.9 MHz, respectively; thus, Qf of MPW increased by 11.9 % compared with that of COW. Figure 6 shows the output voltage and power vs. magnetic flux density characteristics of the energy harvesting circuit in a uniform magnetic flux at frequency f = 250 kHz [6]. We measured the output voltage and power when magnetic flux density B is changed in the range of 0.5 to 5 �T at the frequency f = 250 kHz.…”