Hall-Effect Current Sensors Susceptibility to EMI: Experimental Study

Aiello, Orazio

doi:10.3390/electronics8111310

Cited by 23 publications

(14 citation statements)

References 14 publications

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“…Finally, the Hall effect sensors were assessed. While these sensors are often used as current sensors [ 10 ], using them in conjunction with permanent magnets allows them to be used as displacement sensors. Hall effect sensors are available in small, Integrated Circuit (IC) based formats and can be easily installed within a brick, with magnets of appropriate strength mounted in the opposing brick.…”

Section: Sensor Selectionmentioning

confidence: 99%

Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column

Oddbjornsson¹,

Kloukinas

Gökçe

et al. 2021

Sensors

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This paper presents the design, development and evaluation of a unique non-contact instrumentation system that can accurately measure the interface displacement between two rigid components in six degrees of freedom. The system was developed to allow measurement of the relative displacements between interfaces within a stacked column of brick-like components, with an accuracy of 0.05 mm and 0.1 degrees. The columns comprised up to 14 components, with each component being a scale model of a graphite brick within an Advanced Gas-cooled Reactor core. A set of 585 of these columns makes up the Multi Layer Array, which was designed to investigate the response of the reactor core to seismic inputs, with excitation levels up to 1 g from 0 to 100 Hz. The nature of the application required a compact and robust design capable of accurately recording fully coupled motion in all six degrees of freedom during dynamic testing. The novel design implemented 12 Hall effect sensors with a calibration procedure based on system identification techniques. The measurement uncertainty was ±0.050 mm for displacement and ±0.052 degrees for rotation, and the system can tolerate loss of data from two sensors with the uncertainly increasing to only 0.061 mm in translation and 0.088 degrees in rotation. The system has been deployed in a research programme that has enabled EDF to present seismic safety cases to the Office for Nuclear Regulation, resulting in life extension approvals for several reactors. The measurement system developed could be readily applied to other situations where the imposed level of stress at the interface causes negligible material strain, and accurate non-contact six-degree-of-freedom interface measurement is required.

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Section: Sensor Selectionmentioning

confidence: 99%

Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column

Oddbjornsson¹,

Kloukinas

Gökçe

et al. 2021

Sensors

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show abstract

“…The understanding of sensor fault types is studied in aerospace applications and large scale wind turbine bearings [4], [5]. The susceptibility of Halleffect current sensors to EMI is analyzed in [6] using the bulk current injection, transverse electromagnetic cell, and direct power injection methods in an experimental setup. Although this approach is effective, it does not take fully into account the peripheral components, the driving circuits, and the amplifying stages of a voltage or current sensor.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Sensor Faults in Power Electronics Inverters and Impact Assessment on Power Quality

Mehmood

Papadopoulos

Hadjidemetriou

et al. 2021

2021 IEEE Madrid PowerTech

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Sensors are crucial for the operation of power electronics converters. Voltage and current sensors, widely used in power electronic converter systems, are prone to malfunction or failure mainly due to varying environmental conditions, broken connectors, and ageing of electronic circuit components. Therefore, it is important to characterize the behavior of these sensors under a number of possible faulty conditions and study their impact on the performance of the system. Further, the distinct behavior of such sensors, under different fault types, encourages us to correlate them with the generic fault models. In this paper, a root cause analysis for each type of sensor fault is presented and experimental validation for five fault models is performed, where the parameters of key components in the power electronics voltage and current sensor are intentionally modified to emulate a specific type of fault. Moreover, the impact of each fault on the power quality of Grid Side Converter (GSC) under various types and magnitudes of sensor faults are assessed and validated experimentally. The results of this work are useful to ensure the design for the reliability approach in power electronics converters and provide an assessment of the impact of a sensor failure in the overall operation of power electronics converters. Further, the impact of sensor faults in the overall operation of a power electronics converters give some directions to design algorithms that can improve the reliability and robustness of the power electronics converters.Index Terms-Circuit faults, DC-AC power converters, fault models, power quality, sensor systems.

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“…Contactless current sensors such as Hall-type current sensors are composed of integrated circuits, so EMI countermeasures against radio frequency are required (Refs. [13][14][15][16][17]). In addition, as well as Hall-type current sensors, research using a current transformer (CT) or shunt to measure current accurately at low cost is one example of design [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

A Precise Current Detection Method Using a Single Shunt and FET Rds(on) of a Low-Voltage Three-Phase Inverter

et al. 2021

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In this study, a low-voltage three-phase inverter was used alongside a shunt resistor to measure the current. However, it is known that this type of inverter and shunt resistor system has a region where the measurement of current is impossible due to structural limitations. As a result, many studies have focused on this region through the use of additional algorithms. Most studies measured current by forcibly adjusting the PWM duty in order to measure the current at the region where it could not be sensed. However, unfortunately, the total harmonic distortion (THD) increases in the current due to PWM adjustment. This causes an increase in torque ripple and inverter control instability. Therefore, in this paper, current was measured using the Rds(on) value between the drain source resistor when MOSFET was turned on and the Kalman filter in a low-voltage three-phase inverter with a single shunt. Additionally, the value was verified via comparison with the values achieved when a Hall-type current sensor and single shunt were used. As a result, this study confirmed that the inverter with a single shunt performs the same as a Hall-type sensor at the region where current cannot be detected.

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Hall-Effect Current Sensors Susceptibility to EMI: Experimental Study

Cited by 23 publications

References 14 publications

Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column

Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column

Modeling of Sensor Faults in Power Electronics Inverters and Impact Assessment on Power Quality

A Precise Current Detection Method Using a Single Shunt and FET Rds(on) of a Low-Voltage Three-Phase Inverter

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