This paper presents a different technique for the online stator resistance estimation using particle swarm optimization (PSO) based algorithm rotor flux oriented control schemes of induction motor drives without speed sensor. First, conventional proportional-integral controller-based is used sensorless scheme with two model reference adaptive system (MRAS) concepts. Finally, novel method on PSO...

We present observations of 86 meteor radio afterglows (MRAs) using the new broadband imager at Long Wavelength Array Sevilleta (LWA-SV) station. The MRAs were detected all-sky images with a bandwidth up to 20 MHz. fit spectra both power law and log-normal function. When law, varied from flat steep derived spectral index distribution peaked -1.73. function, exhibits turnovers frequencies between...

In this paper a Model Reference Adaptive System (MRAS) is presented as the speed estimation technique in which the error speed is estimated by comparing reference model and adaptive model and further the error speed is used to obtain the rotor speed. Proportional Integral (PI) is designed for controlling purpose. A non-linear fuzzy-PI controller is used to optimize the speed error value. The Pr...

RESUMO O organismo materno sofre alterações fisiológicas e biomecânicas durante a gestação, dentre elas o afastamento dos músculos retos do abdome (MRAs). Os objetivos deste estudo transversal foram: comparar distância entre os MRAs primíparas treinadas sedentárias que realizaram parto vaginal cesárea; correlacionar com variáveis materno-infantis; essas sem diástase MRAs. Foram avaliadas 56 mul...

A growth in cultural ideologies concerned with men and masculinities in contemporary American society has recently emerged. Men’s rights activist (MRA) groups embody a movement emphasizing the crisis of masculinity. Despite men’s privileged societal status, MRAs seek to establish resources for men to utilize in elevating their perceived subordinated position in society in relation to women and ...

The growth of unruptured intracranial aneurysms (UIAs) is a predictor rupture. Therefore, for further imaging surveillance and treatment planning, it important to be able predict if an UIA likely grow based on initial baseline Time-of-Flight MRA (TOF-MRA). It known that the size shape UIAs are predictors aneurysm and/or We perform feasibility study using mesh convolutional neural network future...

Mineralocorticoid receptor antagonists (MRAs) and sodium glucose co-transporter 2 inhibitors favorably influence the clinical course of patients with heart failure reduced ejection fraction. This study sought to mutual empagliflozin MRAs in EMPEROR-Reduced (Empagliflozin Outcome Trial Patients With Chronic Heart Failure Reduced Ejection Fraction). Secondary analysis that compared effects versus...

The presence of an integrator in a reference model rotor flux-based adaptive system (RF-MRAS) and non-linearity the inverter output voltage degrade speed response sensorless operation electric drive terms DC drift, initial value issues, inaccurate acquisition. To improve response, compensating component is supplemented by amending integrator. coalition drift offset voltages, reduces issues. Dur...

This paper presents the review of the Doubly fed Induction Generator (DFIG) based Wind Energy Conversion System (WECS). Basically the various challenges of the grid connected DFIG based wind turbine has been highlighted in this review. Nonlinear model of wind turbine with DFIG configuration are explained and a 1.2 MW, 50 Hz, 6 pole DFIG simulated using MATLAB/SIMULINK. Some important control is...

Vector field oriented control (VFOC) of permanent magnet synchronous motor (PMSM) drive requires accurate velocity information sensed by a speed or position sensor attached to the rotor. Nowadays, sensorless control is adopted in many industrial applications for reasons of robustness, cost, cabling and reliability. This paper presents a novel sensorless control strategy and initial rotor positi...