Results 1 to 10 of about 2,304,730 (298)

Current Measurement Offset Error Compensation Scheme Considering Saturation of Current Controller in SPMSM Drives

open access: yesIEEE Access, 2023
A current measurement offset error compensation method for surface-mounted permanent magnet synchronous motor (SPMSM) drives that shows stable operating characteristics under the saturation of the current controller is proposed.
Sang-Il Kim   +2 more
doaj   +2 more sources

Ångström exponent errors prevent accurate visibility measurement [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
Visibility is an indicator of atmospheric transparency, and it is widely used in many research fields, including air pollution, climate change, ground transportation, and aviation.
H. Guo   +6 more
doaj   +1 more source

A Novel Modulation-Based Current Harmonic Control Strategy for PMSM Considering Current Measurement Error and Asymmetric Impedance

open access: yesIEEE Access, 2022
The permanent magnet synchronous machines system includes various harmonics caused by asymmetric impedance, current measurement errors, spatial harmonics, and inverter nonlinearity. The asymmetric impedance and the current measurement scaling error cause
Hao Lin   +4 more
doaj   +1 more source

An impact-insensitive fiber optic current transformer based on polarization maintaining photonic crystal fiber delay coil

open access: yesFrontiers in Physics, 2023
When the polarization-maintaining fiber (PMF) delay coil of a fiber optic current transformer (FOCT) is impacted, external forces on the optical fibers and change of their birefringence may lead to extra phase errors during the propagation of optical ...
Hongze Gao   +7 more
doaj   +1 more source

A Statistical Investigation of PMU Errors in Current Measurements

open access: yes2023 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2023
Phasor Measurement Units (PMUs) are becoming widespread in power systems monitoring. Applications relying on synchrophasor measurements ask for models of measurement er-rors that can be integrated to describe the uncertainty of the data. In this paper, an assessment of PMU magnitude and phase-angle errors for current measurements is performed for the ...
Castello, Paolo   +5 more
openaire   +1 more source

A Simple Method for Compensating Harmonic Distortion in Current Transformers: Experimental Validation

open access: yesSensors, 2021
Conventional current transformers (CTs) suffer from nonlinearities due to their ferromagnetic cores. On one hand, it is well-known that severe core saturation may occur because of large overcurrents or unidirectional transient components: this may ...
Christian Laurano   +2 more
doaj   +1 more source

Application of single Hall chip in short circuit current detection of DC system

open access: yesEnergy Reports, 2022
For the short circuit current test requirement of copper platoon at the entrance of a hybrid current-limiting fuse, the magnetic field distribution simulation model of copper platoon in both steady and transient current state were built. The influence of
Haibo Yue   +6 more
doaj   +1 more source

Accuracy and Error Analysis of Vector Measurement of Ocean Surface Current by Multi-Aperture Along-Track Interferometric SAR

open access: yesIEEE Access, 2020
The ocean surface current vector contains velocity and direction information, and its acquisition method has important research value in marine applications.
Yan Li   +4 more
doaj   +1 more source

High-accuracy current measurement with low-cost shunts by means of dynamic error correction [PDF]

open access: yesJournal of Sensors and Sensor Systems, 2016
Measurement of electrical current is often performed by using shunt resistors. Thermal effects due to self-heating and ambient temperature variation limit the achievable accuracy, especially if low-cost shunt resistors with increased temperature ...
P. Weßkamp, J. Melbert
doaj   +1 more source

Automated Precision Amplitudes and Phases Measurement of Polyharmonic Eddy Current Signals of Non-destructive Testing

open access: yesVìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ, 2023
The development of electronic systems like Field-Programmable Gate Array (FPGA) made them available for mass commercial use. This created conditions for the development and application of software and technical tools implemented on FPGA algorithms for ...
V. G. Bazhenov   +3 more
doaj   +1 more source

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