Results 51 to 60 of about 385,708 (355)
Electroactive Liquid Crystal Elastomers as Soft Actuators
Advanced Functional Materials, EarlyView.Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley +1 more source
Internal Short Circuit Protection for Rotor Winding of Variable Speed Pumped-Storage Generator-Motor
Zhongguo dianli, 2021 To provide a solution to the imperfect protection problem of variable speed pumped-storage units when the rotor winding has internal short circuit faults, a stator-side branch circulation current based protection method is proposed for internal short ...
Jun CHEN +5 more
doaj +1 more source
Variable Size Twin-Rotor Wind Turbine [PDF]
Energies, 2019 The paper presents a new concept of a vertical axis wind turbine. The idea is focused on small wind turbines, and therefore, the dominating quality is safety. Another important necessary feature is efficient operation at small winds. This implies an application of the drag driven solution such as the Savonius rotor.
Piotr Doerffer +3 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.Electrochemical abuse transforms thermal runaway behavior in lithium‐ion batteries. Through systematic decoupling of degradation mechanisms, this study reveals that lithium plating lowers the onset temperature by 10 °C, electrolyte consumption delays high‐temperature reactions, and capacity fade reduces total heat generation. These mechanistic insights
San Hwang +12 more
wiley +1 more source
IET Electrical Systems in Transportation, 2021 The high‐performance characteristics of brushless direct current (BLDC) motor has made them indispensable for electric vehicle (EV) applications. The physical replacement of rotor windings with the permanent magnets on the rotor, makes the BLDC motor ...
Adil Usman, Bharat Singh Rajpurohit
doaj +1 more source
Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications
Advanced Functional Materials, EarlyView.Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner +9 more
wiley +1 more source
Evaluation of Weakening Effect of Stator Parallel Branch Circuit on Main Field Asymmetry
Zhongguo dianliThe short circuit between turns of the rotor winding is a weak characteristic electrical fault of the turbine generator, which makes the fault detection difficult.
Bingbing CHEN +3 more
doaj +1 more source
MATEC Web of Conferences, 2018 The paper presents a traction induction motor with an innovative rotor winding design. The winding of the rotor is almost identical to the armature winding in the dc traction motors, with the exception of commutator. Winding is double layered.
Bernatt Jakub +3 more
doaj +1 more source
Controller for computer control of brushless dc motors [PDF]
, 1981 A motor speed and torque controller for brushless d.c. motors provides an unusually smooth torque control arrangement. The controller provides a means for controlling a current waveform in each winding of a brushless dc motor by synchronization of an ...
Hieda, L. S.
core +1 more source
Reduction of cogging torque in interior-magnet brushless machines [PDF]
, 2003 An investigation into the cogging torque in a four-pole interior-magnet brushless machines having either a six-slot stator and a short-pitched nonoverlapping winding or a 12-slot stator and a full-pitched overlapping winding is described.
Howe, D. +3 more
core +1 more source