Results 11 to 20 of about 2,572,717 (328)

Feedforward-loop phase-locked loop based estimation scheme for sensorless IPMSM drive system

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy, 2023
The existence of mechanical speed sensors brings challenges of system reliability. Therefore, drives without speed and position sensors attract much popularity in interior permanent-magnet synchronous motor (IPMSM) drive system. This paper provides a new
Wang Li, Jixiong Jiang, Junwen Mu
doaj   +1 more source

Transformer-Based Power Conversion System with Synchronous Adjustment of Modulated Inverters [PDF]

open access: yesProblems of the Regional Energetics, 2018
Purpose of this work – dissemination of specialized schemes of space-vector modulation for synchronous adjustment of multi-inverter system with power transformer.
Oleschuk V.
doaj   +1 more source

Evaluation Model of Loop Stray Parameters for Energy Storage Converter of Hybrid Electric Locomotive

open access: yesIEEE Access, 2020
When the silicon carbide (SiC) power module is applied to the energy storage converter of a hybrid locomotive, under the action of di/dt and loop stray inductance, it is easy to produce excessively high voltage overshoot, which affects the battery life ...
Yunxin Fan   +6 more
doaj   +1 more source

DC–AC Converter-Fed Induction Motor Drive With Fault-Tolerant Capability Under Open- and Short-Circuit Switch Failures [PDF]

open access: yesIEEE transactions on power electronics, 2018
In this paper, a new fault tolerant dc–ac converter-fed induction motor drive is proposed to maintain motor as close as possible to its desired normal operation under open- and short-circuit switch failures. The operational principles for fault detection
Masoud Farhadi   +3 more
semanticscholar   +1 more source

Assessment of dynamics of asynchronous drive by nonlinear transfer function. Correction of nonlinearity of asynchronous electric drive [PDF]

open access: yesОмский научный вестник, 2019
The article describes methods for analyzing dynamic processes in structures that form a mechanical moment in asynchronous electric motors with frequency control. For the first time, the nonlinearity of the mechanical characteristics of an asynchronous
A. A. Baldenkov   +2 more
doaj   +1 more source

Virtual Energy Storage: Converting an AC Drive to a Smart Load

open access: yesIEEE transactions on energy conversion, 2018
This paper proposes a new smart-load concept using ac drives. The concept is based on a secondary control layer coordinated with the network and the load to provide active power support. The general smart-load concept is developed and synthesized for its
J. Carmona-Sánchez   +2 more
semanticscholar   +1 more source

Investigation of Acoustic Properties on Wideband Sound-Absorber Composed of Hollow Perforated Spherical Structure with Extended Tubes and Porous Materials

open access: yesApplied Sciences, 2020
Traditional porous media such as melamine foam absorb sound due to their three-dimensional porous struts. However, the acoustic properties at low frequencies are greatly related to its thickness.
Dengke Li   +5 more
doaj   +1 more source

Temperature and ac Effects on Charge Transport in Metallic Arrays of Dots [PDF]

open access: yes, 2003
We investigate the effects of finite temperature, dc pulse, and ac drives on the charge transport in metallic arrays using numerical simulations. For finite temperatures there is a finite conduction threshold which decreases linearly with temperature ...
A. Bezryadin   +23 more
core   +1 more source

Model reference adaptive system based sensorless vector control scheme for a 36‐pulse ac–dc converter fed 9‐level cascaded H‐bridge‐inverter driven induction motor drive

open access: yesIET Power Electronics, 2021
A new modular transformer based 36‐pulse ac–dc converter for a cascaded H‐bridge‐inverter fed medium voltage induction motor drive is proposed in this work.
Piyush Kant, Bhim Singh
doaj   +1 more source

Dynamic induced softening in frictional granular material investigated by DEM simulation [PDF]

open access: yes, 2017
A granular system composed of frictional glass beads is simulated using the Discrete Element Method. The inter-grain forces are based on the Hertz contact law in the normal direction with frictional tangential force.
Carmeliet, Jan   +4 more
core   +3 more sources

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