Low-power self-oscillating fluxgate current sensor based on Mn-Zn ferrite cores

Ponjavic, Milan; Veinović, Slavko

doi:10.1016/j.jmmm.2020.167368

Cited by 11 publications

(5 citation statements)

References 15 publications

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“…Electronics 2020, 9, x FOR PEER REVIEW 5 of 14 Apart to dissipation on R, there is, in reality, an additional dissipation caused by power demands of used electronic components. This dissipation, modeled as current sources I0 in Figure 4, is usually small and negligibly affects the compensation of negative ID1 or ID2 [15,16].…”

Section: Analysis Of a Passive Bp Suppression And Impact On Power Con...mentioning

confidence: 99%

“…A class-D output stage in half-bridge (HB) configuration is one of the most used output stages in general-purpose power conversion, especially when the load is in single-ended form. Apart to audio amplifiers [1][2][3][4][5][6][7], it can be found in many other applications, including power electronic converters [7][8][9][10][11], power amplifier in grid testing equipment [12,13], as a compensation amplifier in feedback systems [14][15][16][17], etc. As a power amplifier, class-D HB is a simple, portable, and space and energy-efficient replacement for a linear class-AB amplifier.…”

Section: Introductionmentioning

confidence: 99%

“…However, for a class-D amplifier supplied by front-end switching power supply, HB is still more used, due to simple circuit architecture, especially for multi-channel amplification [9,10,12,13,18,19]. Additionally, FB is limited to applications in which the load can be differentially driven [1,16].…”

Section: Introductionmentioning

confidence: 99%

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Switched Capacitor Compensation of Supply Distortion in Class-D Amplifiers

Ponjavic

Milić

2020

Electronics

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This paper presents a switched capacitor technique for bus-pumping compensation in a half-bridge class-D amplifier. The proposed approach, in addition to the almost complete reduction of the bus-pumping effect, allows the half-bridge class-D amplifier to preserve maximum energy efficiency. The studied hardware implementation of the proposed technique demonstrates its advantages of high efficiency, simple circuit, and low cost. The principal design and operating principles are analyzed and described. The experimental static characteristics and time-domain waveforms for the proposed technique are shown to verify its feasibility.

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Section: Analysis Of a Passive Bp Suppression And Impact On Power Con...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Switched Capacitor Compensation of Supply Distortion in Class-D Amplifiers

Ponjavic

Milić

2020

Electronics

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“…Fluxgate sensor is the device that converts measured current into secondary voltage or current signal for easy measurement, which plays an significant role in metering and detection beacause of its high accuracy [1], low cost, simple structure [2] and mature technology [3]. Its accuracy and stability directly affect the accuracy of power metering and the results of relay protection [4,5].…”

Section: Introductionmentioning

confidence: 99%

Simulation modeling and measurement performance research of fluxgate sensor based on Ansys and Multisim

Chen,

2024

Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023)

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Fluxgate sensor is widely used in new power system due to the advantages of high accuracy and high stability. To facilitate the design of fluxgate sensor structure and analyze its measurement performance, this article builds an electromagnetic cosimulation model based on Ansys and Multisim by designing and simulating fluxgate probe, excitation circuit, and signal processing circuit. Based on the simulation model, sensitivity, linearity and transient response of fluxgate sensor are calculated. Simulation results show that the simulation model can effectively and accurately reflect the performance of fluxgate sensor, which lays a foundation for the actual design and parameter optimization of fluxgate sensor.

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“…The pulse excitation mode and excitation tuning method are commonly used to reduce fluxgate power consumption. Kubik et al, (4) Drljaca et al, (5) Ripka et al, (6) Kubik et al, (7) and Ponjavic and Veinovic (8) studied the pulse excitation technology of the fluxgate from different aspects. Through the use of this technology, the peak of the excitation current is kept constant and the width of the excitation pulse is reduced.…”

Section: Introductionmentioning

confidence: 99%

Optimum Excitation Current of Fluxgate Based on Striped Array Iron Core

Cui¹,

Liu²

2023

Sensors and Materials

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To reduce the power consumption of a micro-fluxgate, we propose the use of a striped array iron core, which reduces the demagnetization coefficient, to reduce the optimum excitation current of the micro-fluxgate. The power consumption is reduced since it is mainly determined by the optimum excitation current. The finite-element electromagnetic simulation software Magnet and the computing software MATLAB are used to jointly establish the fluxgate model to analyze the effect of the striped array iron core on the optimum excitation current of the micro-fluxgate, and the relationship between the structure of the striped array iron core and the optimum excitation current is obtained. Striped array iron cores with different structures are designed by micro-electromechanical technology. Finally, by comparing the experimental results with the simulation results, the validity of the simulation relationship is verified, which provides a theoretical and experimental basis for reducing the power consumption of the microfluxgate by changing the structure of the iron core.

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Low-power self-oscillating fluxgate current sensor based on Mn-Zn ferrite cores

Cited by 11 publications

References 15 publications

Switched Capacitor Compensation of Supply Distortion in Class-D Amplifiers

Switched Capacitor Compensation of Supply Distortion in Class-D Amplifiers

Simulation modeling and measurement performance research of fluxgate sensor based on Ansys and Multisim

Optimum Excitation Current of Fluxgate Based on Striped Array Iron Core

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