A linearization method for commercial Hall-effect current transducers

Cristaldi, L.; Ferrero, Alessandro; Lazzaroni, M.; Ottoboni, R.

doi:10.1109/19.963175

Cited by 58 publications

(26 citation statements)

References 2 publications

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“…Some technologies based on Hall sensors have been proposed for current measurement, called Hall-effect transducers [24,26]. However, these transducers still strongly depend on iron cores, so the problem of core saturation cannot be avoided.…”

Section: Hall-based Electronic Current Transformermentioning

confidence: 99%

A Redundancy Mechanism Design for Hall-Based Electronic Current Transformers

et al. 2017

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Abstract:Traditional current transformers (CTs) suffer from DC and AC saturation and remanent magnetization in many industrial applications. Moreover, the drawbacks of traditional CTs, such as closed iron cores, bulky volume, and heavy weight, further limit the development of an intelligent power protection system. In order to compensate for these drawbacks, we proposed a novel current measurement method by using Hall sensors, which is called the Hall-effect current transformer (HCT). The existing commercial Hall sensors are electronic components, so the reliability of the HCT is normally worse than that of the traditional CT. Therefore, our study proposes a redundancy mechanism for the HCT to strengthen its reliability. With multiple sensor modules, the method has the ability to improve the accuracy of the HCT as well. Additionally, the proposed redundancy mechanism monitoring system provides a condition-based maintenance for the HCT. We verify our method with both simulations and an experimental test. The results demonstrate that the proposed HCT with a redundancy mechanism can almost achieve Class 0.2 for measuring CTs according to IEC Standard 60044-8.

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Section: Hall-based Electronic Current Transformermentioning

confidence: 99%

A Redundancy Mechanism Design for Hall-Based Electronic Current Transformers

et al. 2017

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“…This type of sensor has good accuracy, a wide input range and is not sensitive to over-currents and external interference [19,20]. The sensors allow for a ±450 A and ±600 A measurement range, with galvanic insulation up to 2500 V. For voltage sensing, an isolated amplifier, amc1200 [21], was chosen, which has a ±250 mV input range.…”

Section: Choice Of Key Componentsmentioning

confidence: 99%

Offshore Measurement System for Wave Power—Using Current Loop Feedback

Ulvgård¹,

Kamf²,

Leijon³

2016

Electronics

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This paper presents the design and testing of a measurement system for wave power generators. The work is part of a project to build a robust and cheap measurement system for offshore monitoring of wave power farms. Due to the harsh offshore environment, low accessibility and high cost for installation and maintenance, it is of key importance to minimize power consumption, complexity and cost of each measurement unit. For the first prototype, the objective was to measure voltage, current and translator position inside the linear wave power generator. For this, two printed circuit boards (PCBs) were developed, using a two wire current loop transmitter setup. They were tested separately and in a three phase setup inside a wave power generator during onshore tests. To ensure stability, speed and accuracy in the signal transfer, the PCBs were tested for linearity, frequency response and step response. In addition, power consumption was measured, for operational time evaluation. Results show good agreement between expected and measured performance, with an input range of ±1560 V and ±420 A for alternating current measurements and a bandwidth of 10 kHz and 7 kHz, for voltage and current measurements, respectively. The power consumption was measured to 0.5 W for each measurement unit, at 24 V feed.

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“…Different compensation techniques were developed for closed loop Hall Effect transducers to improve linearity [2]. Such techniques can be combined with the proposed calibration method to improve overall sensor linearity.…”

Section: Introductionmentioning

confidence: 98%

“…Such techniques can be combined with the proposed calibration method to improve overall sensor linearity. However, the methods developed in [2] are limited to sensors with a hole for the primary winding and are optimized to decrease total harmonic distortion (THD).…”

Section: Introductionmentioning

confidence: 99%

A New Calibration Method for Current and Voltage Sensors Used in Power Quality Measurements

Ramos

Brás

Serra

2006

2006 IEEE Instrumentation and Measurement Technology Conference Proceedings

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Sensor calibration plays an important role in instrument development and accuracy. This paper presents a method to calibrate current and voltage sensors specially dedicated to power quality measurements which can significantly reduce the distortions introduced by the sensors. The first approach to sensor calibration is based on the response of sensors to DC values imposed by a calibrator. The second method is an AC calibration, where a 50 Hz power signal is applied to the sensors also through a calibrator. The calibration coefficients are obtained by minimizing the output distortion. The minimized output distortion is assessed by the signal to noise and distortion ratio (SINAD) at the output of the sensor correction module.

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A linearization method for commercial Hall-effect current transducers

Cited by 58 publications

References 2 publications

A Redundancy Mechanism Design for Hall-Based Electronic Current Transformers

A Redundancy Mechanism Design for Hall-Based Electronic Current Transformers

Offshore Measurement System for Wave Power—Using Current Loop Feedback

A New Calibration Method for Current and Voltage Sensors Used in Power Quality Measurements

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