Results 91 to 100 of about 9,074 (311)

DC AC motors switching controller [PDF]

open access: yes, 2009
This project is about controlling the switching of DC and AC motors. The DC motor has large starting torque compare to AC motors and therefore they always used as starting motor to move the electric vehicle.
Ahmad Zhafir, Ahmad Wahid
core  

Dynamic model tracking design for low inertia, high speed permanent magnet ac motors

open access: yes, 2007
Permanent magnet ac (PMAC) motors have existed in various configurations for many years. The advent of rare-earth magnets and their associated highly elevated levels of magnetic flux makes the permanent magnet motor attractive for many high performance ...
Stewart, Paul, Kadirkamanathan, Visakan
core   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

DIAGNOSTIC FEATURES RESEARCH OF AC ELECTRIC POINT MOTORS

open access: yesNauka ta progres transportu, 2014
Purpose.Considerable responsibility for safety of operation rests on signal telephone and telegraph department of railway. One of the most attackable nodes (both automation systems, and railway in whole) is track switches.
S. YU. Buryak   +3 more
doaj   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

A squirrel cage rotor position control using control vector and current control.

open access: yesRevista Tecnologia, 2009
The principle of vector control of AC machine enables the dynamic control of AC motors, and induction motors in particular to a level comparable to that of a DC machine.
Eber de Castro Diniz   +2 more
doaj  

Study of the asynchronous traction drive's operating modes by computer simulation. Part 1: Problem formulation and computer model [PDF]

open access: yesTransport Problems, 2015
In this paper, the problems arising from the design of electric locomotives with asynchronous traction drive (with three-phase AC induction motors) are considered as including the debugging of control algorithms.
Pavel KOLPAHCHYAN, Alexander ZARIFYAN Jr
doaj  

Line-start permanent-magnet motor: single-phase starting performance analysis [PDF]

open access: yes, 2002
This paper presents a detailed quasi-steady-state approach to different torque components (average and pulsating) for a single-phase capacitor-run permanent-magnet (PM) motor.
McGilp, M.I.   +11 more
core   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

Improved DTC of Induction Motor with Fuzzy Controller [PDF]

open access: yesE3S Web of Conferences
DTC, also known as Direct Torque Control, is a technique employed in variable frequency drives for regulating the torque and speed of three-phase AC electric motors. This method entails determining an approximation of the motor’s magnetic flux and torque
Manivasagam   +3 more
doaj   +1 more source

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