Modeling and Research of Magnetic Flux Generator

Sokerov, Blagoy Petkov; Arnaudov, Dimitar

doi:10.1109/et.2018.8549596

Cited by 2 publications

(2 citation statements)

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“…Evaluating the first two partial derivatives (∂R4 and ∂R3) and replacing the R i with (13), the relationship shown in (15) holds if an identical temperature variation occurs in both resistors and assuming their TCR is the same.…”

Section: B Hcs Stability Due To R 2b Temperaturementioning

confidence: 99%

“…It is also worth mentioning that most of similar Helmholtz coil works in the literature either do not discuss the current source [5], or uses custom-built solutions based on switching inverting topologies [3], [15], or end up using commercial sources [6], which can also be expensive and might not strictly comply with the system's requirements. Additionally, most of these works do not present or discuss their current sources capabilities, performance, or limitations in detail.…”

Section: Introductionmentioning

confidence: 99%

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Howland Current Source Applied to Magnetic Field Generation in a Tri-Axial Helmholtz Coil

et al. 2019

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This work describes the design and testing of a power Voltage-Controlled Current Source (VCCS) based on the Howland Current Source (HCS) topology. This source is part of a system that contains a three-axial Helmholtz coil and is used to generate a controlled magnetic field environment for aerospace applications. Initially, the paper presents the HCS theory and practical limitations on the premise that the system must be built using low-cost off-the-shelf components. The paper also carefully address on how to design and plan the VCCS matching physical and electrical parameters/limitations of a specific Helmholtz coil. All project details as well as the built VCCS electronics and its results are shown. These include linearity and a first order calibration test, stability and low-frequency error measurement, step response and a frequency limitation analysis. The built source is capable of sourcing up to ±1.5 A at ±25 V, maintaining its linearity and achieving an error smaller than 0.5% with a first order calibration. The final HCS prototype together with the Helmholtz coil allows an excellent capability regarding magnetic field generation for both open and closed-loop applications.

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Section: B Hcs Stability Due To R 2b Temperaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%