Results 1 to 10 of about 5,036,500 (147)

Algorithmic Error Mitigation Scheme for Current Quantum Processors [PDF]

open access: yesQuantum, 2021
We present a hardware agnostic error mitigation algorithm for near term quantum processors inspired by the classical Lanczos method. This technique can reduce the impact of different sources of noise at the sole cost of an increase in the number of ...
Philippe Suchsland   +5 more
doaj   +1 more source

The Method to Determine the Turns Ratio Correction of the Inductive Current Transformer

open access: yesEnergies, 2021
This paper presents the method for evaluation of the turns ratio correction of the inductive current transformer using the magnetization curves determined at the non-load state and in the load conditions.
Ernest Stano
doaj   +1 more source

The Influence of the 3rd Harmonic of the Distorted Primary Current on the Self-Generation of the Inductive Current Transformers

open access: yesIEEE Access, 2022
This paper investigates for transformation of the distorted current the low order higher harmonic self-generation phenomenon of tested inductive current transformers.
Michal Kaczmarek, Ernest Stano
doaj   +1 more source

Evaluation of the Current Shunt Influence on the Determined Wideband Accuracy of Inductive Current Transformers

open access: yesEnergies, 2022
This manuscript presents performed laboratory studies and the analysis of the impact of current shunt values used in the differential connection on the wideband metrological performance of inductive current transformers.
Michal Kaczmarek   +2 more
doaj   +1 more source

The Effect of the Load Power Factor of the Inductive CT’s Secondary Winding on Its Distorted Current’s Harmonics Transformation Accuracy

open access: yesEnergies, 2022
In this paper, we present an investigation into the influence of the load power factor of secondary winding on the metrological performance of inductive CTs with frequencies from 50 Hz to 5 kHz of the harmonic of a transformed distorted current.
Michal Kaczmarek   +2 more
doaj   +1 more source

Why Should We Test the Wideband Transformation Accuracy of Inductive Current Transformers?

open access: yesEnergies, 2022
Inductive current transformers are characterized by different transformation accuracies for higher harmonics of distorted primary currents. Therefore, it is highly required to perform the tests of their metrological properties to choose the best unit ...
Ernest Stano   +2 more
doaj   +1 more source

Understanding the Frequency Characteristics of Current Error and Phase Displacement of the Corrected Inductive Current Transformer

open access: yesEnergies, 2022
The paper presents investigations and analysis of the parameters of the magnetic part of the equivalent circuit of the inductive CT in the frequencies range from 50 Hz to 5 kHz.
Ernest Stano   +2 more
doaj   +1 more source

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   +1 more source

An Improved Model Free Predictive Current Control for PMSM With Current Prediction Error Variations

open access: yesIEEE Access, 2022
The conventional model predictive current control is a model-based control method, and the accuracy of the predicted currents is affected by motor parameters such as flux linkage, inductance, and resistance. To get rid of model parameters dependencies, a
Peng Wang, Xin Yuan, Chengning Zhang
doaj   +1 more source

Improved current-regulated delta modulator for reducing switching frequency and low-frequency current error in permanent magnet brushless AC drives [PDF]

open access: yes, 2005
The conventional current-regulated delta modulator (CRDM) results in a high current ripple and a high switching frequency at low rotational speeds, and in low-frequency current harmonics, including a fundamental current error, at high rotational speeds ...
Howe, D., Wipasuramonton, P., Zhu, Z.Q.
core   +1 more source

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