Current derivative measurement using closed‐loop hall‐effect current sensor

Anuchin, Alecksey; Zharkov, Alexandr; Shpak, Dmitry; Aliamkin, Dmitry; Vagapov, Yuriy

doi:10.1049/joe.2018.8101

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…In [11] the current derivative is measured as a voltage drop across the inductor at the secondary side of the closedloop Hall-effect sensor. High resistance of the inductor has significant impact to the measured current derivative and the obtained signal requires an additional correction.…”

Section: Current Derivative Measurement Circuit Withmentioning

confidence: 99%

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Direct Measurement of the Current Derivative Using a Delta-Sigma Modulator for Sensorless Traction Motor Control

Anuchin

Zharkov

Aliamkin

et al. 2018

2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles &Amp; Interna

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This paper discusses a new method of direct measurement of the current derivative applied to determine an electric motor inductance required for efficient and reliable control of sensorless AC electric drives. The method is based on the measurement of the voltage drop across a calibrated inductor implemented into the power circuit of the motor drive inverter. In order to increase accuracy and reduce transients and oscillations the measured voltage drop is processed using a delta-sigma modulator. The data stream generated by the modulator is then transferred to a microcontroller supported demodulation for further processing and filtering. The paper also presents the results of experimental investigations of three different shunt inductors. The results demonstrate a high accuracy and noise immunity of the proposed method.

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Section: Current Derivative Measurement Circuit Withmentioning

confidence: 99%

“…A new method of the direct sensing of current derivative is suggested in [11]. This utilises the ability of a closed-loop Hall-effect sensor to transform current from primary to the secondary side.…”

Section: Introductionmentioning

confidence: 99%

Direct Measurement of the Current Derivative Using a Delta-Sigma Modulator for Sensorless Traction Motor Control

Anuchin

Zharkov

Aliamkin

et al. 2018

2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles &Amp; Interna

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“…The Hall voltage ( V H ) results from the Hall effect generated by electrical current in a conductor, where the magnetic field is formed and is orthogonal to the electrical current. The most popular use of the Hall effect is in sensing (Alpert et al, 2019; Anuchin, Zharkov, Shpak, Aliamkin, & Vagapov, 2019; Ramsden, 2006). Sun et al (2016) have designed a wireless electrical current sensor, which consists of a wireless module, Hall sensor, and energy harvester.…”

Section: Introductionmentioning

confidence: 99%

Hall effect sensors using polarized electron cloud spin orientation control

Arumona

Garhwal

Youplao

et al. 2020

Microscopy Res & Technique

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A silicon microring circuit embedded gold film with unique characteristics is proposed for Hall effect, current, and temperature sensing applications. The microring circuit is operated by the input polarized laser sources, in which the space–time distortion control can be employed. A gold film is embedded at the microring center. The whispering gallery mode (WGM) is generated and applied for plasmonic waves, from which the trapped electron cloud oscillation is formed. Through the input port, the input polarized light of 1.55 μm wavelength fed into the space–time control circuit. Spin‐up |↑〉(|0〉) and spin‐down |↓〉(|1〉) of polarized electrons result when the gold film is illuminated by the WGM. The electric current passing through the gold film generates a magnetic field (B), which is orthogonal to the electric field. Hall voltage is obtained at the output of the circuit, from which the microring space–time circuit can operate for Hall's effect, current, and temperature sensing device. The simulation results obtained have shown that when the input power of 100–500 mW is applied, the optimum Hall effect, current, and temperature sensitivities are 0.12 μVT−1, 0.9 μVA−1, and 6.0 × 10−2 μVK−1, respectively. The Hall effects, current, and temperature sensors have an optimum response time of 1.9 fs.

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