Results 11 to 20 of about 1,540,872 (167)

NURSING ERRORS: A STUDY OF THE CURRENT LITERATURE [PDF]

open access: yesTexto & Contexto - Enfermagem, 2017
ABSTRACT Objective: to characterize what the current literature states about nursing errors, with a specific review on how these errors are communicated to society by the media. Method: a qualitative documental research, characterized as an integrative literature review, performed using four databases and guided by a formal protocol, in the period from
Forte, Elaine Cristina Novatzki   +3 more
openaire   +5 more sources

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

Investigations on STATCOM using current error space phasor based modified hysteresis current controller

open access: yesIET Generation, Transmission & Distribution, 2021
A STATCOM that employs a nearly constant switching frequency hysteresis current controlled VSI is presented in this paper. Hysteresis controller enhances the dynamic performance of STATCOM.
Athira Raju   +2 more
doaj   +1 more source

Influence of current error controller on commutation failures and system recovery

open access: yes电力工程技术, 2022
Constant extinction angle control based on prediction is a basic control strategy of inverter in line-commutated converter high-voltage direct current (HVDC) system.
SONG Xinfu   +5 more
doaj   +1 more source

Error Resilience in Current Distributed Video Coding Architectures

open access: yesEURASIP Journal on Image and Video Processing, 2009
In distributed video coding the signal prediction is shifted at the decoder side, giving therefore most of the computational complexity burden at the receiver.
Claudia Tonoli   +2 more
doaj   +2 more sources

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

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

ДОСЛІДЖЕННЯ ПОХИБОК ТРАНСФОРМАТОРІВ СТРУМУ У СИСТЕМАХ РЕЛЕЙНОГО ЗАХИСТУ В УСТАЛЕНИХ ТА ПЕРЕХІДНИХ РЕЖИМАХ ЕНЕРГОСИСТЕМИ

open access: yesElektrotehnìka ta Elektroenergetika, 2016
Мета роботи. Визначення максимальних величин струмових та кутових похибок трансформаторів струму та характеру їх зміни в усталених та перехідних режимах енергосистеми, за яких можливий вихід величин похибок за межі діапазону нормованих значень, а також у
V. V. Nitsenko   +2 more
doaj   +1 more source

Current Prediction Error Reduction Method of Predictive Current Control for Permanent Magnet Synchronous Motors

open access: yesIEEE Access, 2020
Predictive current control (PCC) has been widely investigated in motor drive field. The PCC is a model-based control method and the motor prediction model is quite sensitive to motor parameters which may be inaccurately measured and change under ...
Feng Niu   +6 more
doaj   +1 more source

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