Results 111 to 120 of about 37,496 (307)
Improved MOGIFO-Based Flux Observation Strategy for PMSM Sensorless Drives
IEEE AccessDue to parameter variations, measurement errors, and converter non-linearities of for permanent magnet synchronous machine (PMSM) system, traditional rotor flux observers suffer from the dc drift and harmonics.
Renjun Dian, Junhe Zhang, Yajie Jiang
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An Adaptive Frequency Phase-Locked Loop Based on a Third Order Generalized Integral
Energies, 2019 In this paper, the basic principle and characteristics of a phase-locked loop (PLL) in a single phase grid-connected system are analyzed, and this paper introduces one type virtual orthogonal voltage vector method based on a third order generalized ...
Heng Du +4 more
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Advanced Functional Materials, EarlyView.Ferroelectric domain variants that are energetically equivalent are expected to remain preserved during polarization reversal. However, phase‐field simulations reveal that inclined domain walls in relaxor ferroelectrics can undergo irreversible elimination during alternating current poling through a proximity effect driven by long‐range elastic ...
Yuan‐Jie Sun +2 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler +4 more
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Effect of DC Offset on the T-Wave Residuum Parameter
, 2006 The T-wave residuum (TWR) is a relatively new 12-lead ECG parameter that may reflect cardiac repolarization heterogeneity. TWR shows clinical promise and may become an important diagnostic tool if accurate, consistent, and convenient methods for its ...
Schlegel, Todd T. +2 more
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A 0.8-μW window SAR ADC with offset cancellation for digital DC–DC converters
, 2011 This letter presents the design of a window successive approximation (SAR) analog-to-digital converter (ADC) using an ultra-fast, offset-cancelled auto-zero comparator for digital DC–DC converters. It is designed in a standard CMOS 0.18 μm process.
Meng Tong Tan +5 more
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An Algorithm for Induction Motor Stator Flux Estimation
Advances in Electrical and Computer Engineering, 2012 A new method for the induction motor stator flux estimation used in the sensorless IM drive applications is presented in this paper. Proposed algorithm advantageously solves problems associated with the pure integration, commonly used for the stator ...
STOJIC, D. M.
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Polymer‐Redox Interactions Enhance Ferro/Ferricyanide Thermogalvanic Cells
Advanced Functional Materials, EarlyView.Polyelectrolyte could modify the hydration structure of the redox couple in solution and improve the output performance of thermogalvanic cells, providing new fundamental insight into how electrostatic interactions can be exploited to tailor thermoelectric properties.
Pedro Santos Candiotto de Oliveira +6 more
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, 2010 DC injection limits into the AC network are an important power quality control requirement for gridconnected photovoltaic systems. Most publications on DC offset controllers focus only on their steady state performance.
Bowtell, L. A., Ahfock, A. L.
core
Advanced Functional Materials, EarlyView.Electrochemical etching provides an eco‐friendly alternative to hazardous HF methods for MXene production. This approach facilitates the selective isolation of the A‐layer from MAX phases with tunable surface terminations. Controlling voltage, electrolytes, temperature, and duration enables the optimal structural integrity. Nevertheless, existing scale
Jagdeep Singh +4 more
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