Results 21 to 30 of about 2,992,959 (303)

Systems mutual loadings of traction asynchronous cars [PDF]

open access: yesMATEC Web of Conferences, 2019
The review of methods of post-repair tests of traction asynchronous motors under conditions of locomotive depot is carried out.The necessity of introducing special stands for post-repair tests is shown in order to improve their quality, reduce the number
Afanasov Andriy   +2 more
doaj   +1 more source

An extended winding function model for induction machine modelling considering saturation effect

open access: yesIET Electric Power Applications, 2021
Winding function (WF) method is one of the electric machines modelling methods, which is used to simulate electric machines under different conditions.
Mehrdad Gholami   +2 more
doaj   +1 more source

Asynchronized Synchronous Machines [PDF]

open access: yesElectronics and Power, 1964
This book provides a theoretical treatment of the operation, and the excitation systems, of “asynchronized” synchronized (AS) machines — that is, ac motors and generators which have their excitation supplied by an independent slip-frequency source. Such devices are usually called “doubly fed” machines in American practice.
  +4 more sources

Increasing the energy efficiency of auxiliary machines of AC electric locomotive

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2021
Currently, an asynchronous variable frequency drive based on semiconductor converters is widely used due to the relative simplicity and reliability of the design.
Yu. M. Kulinich   +2 more
doaj   +1 more source

Autonomous mode and parallel operation of an asynchronous generator with the electrical network [PDF]

open access: yesE3S Web of Conferences
This article explains that an asynchronous machine, like other electrical machines, can operate as a motor and generator due to the property of reciprocating motion and that an asynchronous generator is not different in design from an induction motor ...
Bekishev A.Y.   +4 more
doaj   +1 more source

Driving Asynchronous Induction Launchers: Design and Simulation of a Novel Power Conditioner with a Brief Review

open access: yesEnergies, 2022
The design and implementation of an asynchronous coilgun’s structure is relatively simple compared with other types of linear induction launchers.
Feyzullah Gulpinar, Abdulkadir Balikci
doaj   +1 more source

Hardware acceleration of number theoretic transform for zk‐SNARK

open access: yesEngineering Reports, EarlyView., 2023
An FPGA‐based hardware accelerator with a multi‐level pipeline is designed to support the large‐bitwidth and large‐scale NTT tasks in zk‐SNARK. It can be flexibly scaled to different scales of FPGAs and has been equipped in the heterogeneous acceleration system with the help of HLS and OpenCL.
Haixu Zhao   +6 more
wiley   +1 more source

Design methodology of the universal test system based on grouping of electric machines

open access: yesОмский научный вестник
To ensure the repair and production of asynchronous machines, the creation and development of unified testing systems is an urgent task. The methodology proposed in the article for designing unified test systems allows using efficient and economical ways
A. V. Bublik   +3 more
doaj   +1 more source

Automatic Pattern Identification Based on the Complex Empirical Mode Decomposition of the Startup Current for the Diagnosis of Rotor Asymmetries in Asynchronous Machines

open access: yesIEEE transactions on industrial electronics (1982. Print), 2014
This paper presents an advanced signal processing method applied to the diagnosis of rotor asymmetries in asynchronous machines. The approach is based on the application of complex empirical mode decomposition to the measured start-up current and on the ...
G. Georgoulas   +6 more
semanticscholar   +1 more source

Detection of the Stator Winding Inter-Turn Faults in Asynchronous and Synchronous Machines Through the Correlation Between Harmonics of the Voltage of Two Magnetic Flux Sensors

open access: yesIEEE transactions on industry applications, 2019
This paper presents a statistical methodology for detection of inter-turn short-circuit fault in asynchronous and synchronous machines. This methodology uses a correlation coefficient obtained from external magnetic field measured in the machine vicinity.
M. Irhoumah   +4 more
semanticscholar   +1 more source

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