Results 21 to 30 of about 21,043 (160)

Design and Analysis of Single Inverter-Fed Brushless Wound Rotor Vernier Machine

open access: yesIEEE Access, 2022
In this paper, a brushless wound rotor vernier machine (Bl-WRVM) with a single inverter configuration is proposed to achieve the brushless operation.
Sara Tariq   +5 more
doaj   +1 more source

Simplified Brushless Wound Field Synchronous Machine Topology Based on a Three-Phase Rectifier

open access: yesIEEE Access, 2021
This paper proposes a novel simplified brushless wound field synchronous machine (BL-WFSM) topology based on an uncontrolled three-phase rectifier. The output of the rectifier is injected into the common point of the star-connected three-phase armature ...
Syed Sabir Hussain Bukhari   +3 more
doaj   +1 more source

Excitation of second harmonic terahertz surface magnetoplasmons over a rippled surface of n-InSb

open access: yesResults in Optics, 2023
We analyzed the excitation of second harmonic (SH) terahertz (THz) surface magnetoplasmons (SMPs) over a n-type semiconductor (n-InSb)-free space interface.
Rohit Kumar Srivastav, A. Panwar
doaj   +1 more source

Field in a complex cylindrical/coaxial cavity subject to time‐harmonic and transient excitation [PDF]

open access: yesRadio Science, 2004
A coupled integral‐equation method for calculating fields in complex cavities is developed and is applied to cavities comprising multiple cascaded and overlapping coaxial and circular‐cylindrical regions or sections. The field in a section is related to the fields in apertures of planar conducting surfaces, which bound the section.
Charles L. Bopp, Chalmers M. Butler
openaire   +1 more source

Iron Loss Analysis and Efficiency Calculation of Double Stator HTS Machine With Stationary Seal

open access: yesIEEE Access, 2022
This paper mainly analyzes the iron loss of a double stator high-temperature superconducting (HTS) machine with stationary seal and calculates its efficiency. Firstly, according to the field-modulation theory, the air-gap flux density harmonic components
Wenzhong Ma   +4 more
doaj   +1 more source

Optimum design and research on novel vehicle hybrid excitation synchronous generator

open access: yesMATEC Web of Conferences, 2017
Hybrid excitation is an organic combination of permanent magnet excitation and electric excitation. Hybrid excitation synchronous generator (HESG) both has the advantages of light quality, less losses and high efficiency like permanent magnet generator ...
Liu Zhong-Shu
doaj   +1 more source

Analysis and Design of a Brushless WRSM with Harmonic Excitation Based on Electromagnetic Induction Power Transfer Optimization

open access: yesMagnetism
This paper proposes a method to analyze the effect of the rotor’s harmonic winding design and the output of a brushless wound rotor synchronous machine (WRSM) for optimal excitation power transfer.
Arsalan Arif   +6 more
doaj   +1 more source

Influence of Parameters on the Excitation Power of Third Harmonic Brushless Hybrid Excitation Generator

open access: yesEnergies
Hybrid-excited generators have a wide voltage regulation capability or a wide range of variable-speed constant-voltage output capability, providing a significant advantage in the new energy power generation field.
Yonghong Xia   +5 more
doaj   +1 more source

Biomaterial Real Cracks Evaluation by Eddy Current Testing Method

open access: yesCommunications, 2015
The paper deals with identification of real biomaterial`s cracks using electromagnetic non-destructive sensing. Advanced types of the magnetic field sensors are used for this purpose. New modular eddy current probe is used for the evaluation.
Milan Smetana, Klara Capova
doaj   +1 more source

Minimization of Voltage Harmonic Distortion of Synchronous Generators under Non-Linear Loading via Modulated Field Current

open access: yesEnergies, 2023
The synchronous generators (SGs) supplying non-linear loads have harmonically distorted terminal voltages. Hence, these distorted terminal voltages adversely affect the performance parameters of the supplied loads such as the power factor, current ...
Oktay Karakaya   +2 more
doaj   +1 more source

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