Results 61 to 70 of about 135,349 (273)
Adaptive frequency support control strategy for wind farms based on rotor kinetic energy
电力工程技术With the large-scale integration of wind power into the grid, the inertia and disturbance resistance of the power system are gradually declining, leading to an increasingly prominent frequency stability issue.
YU Jingyi +5 more
doaj +1 more source
Advances in Electrical and Electronic Engineering, 2021 This paper develops a mathematical model for analyzing the steady-state performance of the Slip Power Recovery Induction Motor Drive System (SPRIMDS) which operates under unbalance supply voltage conditions.
Hilmi Fadhil Ameen, Fadhil Toufick Aula
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Influence of process parameters on flexural rigidity and elastic recovery of polyester OE rotor-spun yarns [PDF]
, 2002 44-47Fibre cross-section is an important factor in determining flexural rigidity and elastic recovery of OE rotor-spun yarns. The level of spin finish, tex twist factor, draw-off nozzle profile, rotor speed and opening roller speed have profound ...
Patnaik, A, Tyagi, G K, Ishtiaque, S M
core
Advanced Science, EarlyView.A biotin‐modified artificial insertion peptide functionalized three‐dimensional high‐curvature‐TiO2 nano‐interface was engineered in a microfluidic chip to improve the isolation efficiency of small extracellular vesicles (sEVs). This chip balanced affinity, releasability, and extendibility, enabling high‐throughput recovery of sEVs for downstream ...
Le Wang +7 more
wiley +1 more source
Chemical Engineering Transactions, 2017 The impact of crowbar resistance on low voltage ride through (LVRT) of doubly-Fed induction generator (DFIG) is researched. The relationship between the crowbar resistance and the rotor transient current and the attenuation rate of stator rotor transient
Wenjuan Zhang, Haomiao Ma, Feige Zhang
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Sensorless Speed Control of Salient Rotor PM Synchronous Motor Based on High Frequency Signal Injection and Kalman Filter [PDF]
, 2002 The paper presents an approach to sensor-less speed control of salient rotor permanent magnet synchronous motor, based on a high frequency signal injection scheme improved by the use of Kalman filtering.
TURSINI, M. +5 more
core +1 more source
Advanced Science, EarlyView.A rotational energy harvesting device that successfully reconciles high power density with mechanical durability through a hybrid sliding‐and‐bouncing kinematic mechanism is reported. The success reported in our paper includes addressing a dilemma where enhanced electrical output comes at the cost of increased friction and wear, limiting the practical ...
Yihong Lin +12 more
wiley +1 more source
Effect of rotor tip speed on flotation cell performance [PDF]
, 2019 Energy consumption of a mechanical flotation cell comprises of the level of rotor tip speed and air supply. According to previous studies, there is evidence that reduction of rotation speed may not lead into significant losses in flotation rate in regard
Kauppila, Katariina
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An Energy Autonomous Microneedle Array‐Based Sensing System for Continuous Biomarker Monitoring
Advanced Science, EarlyView.This work presents an innovative self‐powered wearable biosensor system for real‐time monitoring of multiple biomarkers in interstitial fluid. The device integrates stainless steel‐based minimally invasive microneedles with ion‐selective membranes, enabling simultaneous Na+, K+, Ca2+, pH, and glucose detection.
Arnab Pal +9 more
wiley +1 more source
Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC
Energies, 2022 Voltage source converter based high voltage DC system (VSC-HVDC) has become a very promising solution to integrate offshore wind farm. However, the equivalent inertia of the modern power system with large renewable energy integration becomes small, which
Rui Zeng, Yizhen Wang
doaj +1 more source