Magneto-optical ac-current sensing with an annealed fiber coil and intrinsic temperature compensation

1994 ◽  
Author(s):  
Peter Menke ◽  
Thomas Bosselmann
Keyword(s):  
Temperature Compensation ◽  
Current Sensing ◽  
Ac Current ◽  
Fiber Coil

Interferometric Fiber-Optic Electric Current Sensor for Industrial Application

2010 ◽  
Vol 437 ◽  
pp. 314-318 ◽  
Author(s):  
Nikolay I. Starostin ◽  
Maksim V. Ryabko ◽  
Yurii K. Chamorovskii ◽  
Vladimir P. Gubin ◽  
Aleksandr I. Sazonov ◽  
...  
Keyword(s):  
Electric Current ◽  
Industrial Application ◽  
Temperature Compensation ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Current Sensor ◽  
Sensor Output ◽  
Optic Sensor ◽  
Spun Fiber ◽  
Fiber Coil

The interferometric electric current fiber-optic sensor for application in industry is presented. The modified spun fiber is used for sensitive fiber coil of sensor. The sensor has accuracy of 0.5% at temperature range from -40°C to 60°C without necessity of additional temperature compensation. The range of measured current is 15 – 250 kA. A frequency band is 0 – 5000 Hz and a nonlinearity of a sensor output is ±0.15%.

scholarly journals RFID AC Current Sensing Technique

2020 ◽  
Vol 20 (4) ◽  
pp. 2197-2204 ◽  
Author(s):  
Irfan Ullah ◽  
Robert Horne ◽  
Benito Sanz-Izquierdo ◽  
John C. Batchelor
Keyword(s):  
Current Sensing ◽  
Ac Current

Nanoscale capacitance imaging with attofarad resolution using ac current sensing atomic force microscopy

2006 ◽  
Vol 17 (18) ◽  
pp. 4581-4587 ◽  
Author(s):  
L Fumagalli ◽  
G Ferrari ◽  
M Sampietro ◽  
I Casuso ◽  
E Martínez ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Current Sensing ◽  
Force Microscopy ◽  
Atomic Force ◽  
Ac Current

scholarly journals Comparing Devices for Concurrent Measurement of AC Current and DC Injection during Electric Vehicle Charging

2020 ◽  
Vol 11 (3) ◽  
pp. 57
Author(s):  
Olga Mironenko ◽  
Willett Kempton
Keyword(s):  
Electric Vehicle ◽  
Current Transformer ◽  
Cost Comparison ◽  
Current Sensing ◽  
Vehicle To Grid ◽  
Electric Vehicle Charging ◽  
Ac Current ◽  
Supply Equipment ◽  
Safety Countermeasures ◽  
Power And Energy

Widespread adoption of electric vehicles (EVs) requires additional safety countermeasures to prevent DC injection from EVs into the AC grid via Electric Vehicle Supply Equipment (EVSE). Moreover, for energy purchase, and even more so for vehicle-to-grid (V2G) services, the EVSE must conduct high precision bidirectional power and energy measurements. This paper introduces operating principles, structure, performance, and cost comparison of three current sensing technologies—current transformer, shunt and fluxgate—for metering and protection within an EVSE, concluding with recommendations among those sensors for the most beneficial applications concerning EV charging.

scholarly journals A Temperature-Compensation Technique for Improving Resolver Accuracy

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6069
Author(s):  
Wandee Petchmaneelumka ◽  
Vanchai Riewruja ◽  
Kanoknuch Songsuwankit ◽  
Apinai Rerkratn
Keyword(s):  
Ambient Temperature ◽  
Temperature Compensation ◽  
Temperature Sensitive ◽  
Output Stage ◽  
Current Sensing ◽  
Temperature Variations ◽  
Class Ab ◽  
Experimental Implementation ◽  
Compensation Technique ◽  
Supply Current

Variation in the ambient temperature deteriorates the accuracy of a resolver. In this paper, a temperature-compensation technique is introduced to improve resolver accuracy. The ambient temperature causes deviations in the resolver signal; therefore, the disturbed signal is investigated through the change in current in the primary winding of the resolver. For the proposed technique, the primary winding of the resolver is driven by a class-AB output stage of an operational amplifier (opamp), where the primary winding current forms part of the supply current of the opamp. The opamp supply-current sensing technique is used to extract the primary winding current. The error of the resolver signal due to temperature variations is directly evaluated from the supply current of the opamp. Therefore, the proposed technique does not require a temperature-sensitive device. Using the proposed technique, the error of the resolver signal when the ambient temperature increases to 70 °C can be minimized from 1.463% without temperature compensation to 0.017% with temperature compensation. The performance of the proposed technique is discussed in detail and is confirmed by experimental implementation using commercial devices. The results show that the proposed circuit can compensate for wide variations in ambient temperature.

scholarly journals Tag Design for RFID AC Current Sensing System

2020 ◽  
Author(s):  
Irfan Ullah ◽  
Robert Horne ◽  
Benito Sanz-Izquierdo ◽  
John C Batchelor
Keyword(s):  
Current Sensing ◽  
Sensing System ◽  
Ac Current
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