Results 1 to 10 of about 22,099 (116)

Brushless Excitation Principle and Experimental Verification of Hybrid Excitation Synchronous Generator Based on Harmonic Magnetic Field

open access: yesIEEE Access, 2022
It is well known that the air-gap magnetic field of the permanent magnet synchronous generator (PMSG) is difficult to adjust. To overcome this challenge while maintaining the brushless feature of PMSGs, a hybrid excitation synchronous generator (HESG ...
Yonghong Xia   +4 more
doaj   +3 more sources

Performance Analysis of Brushless Wound Rotor Vernier Machine by Utilizing Third Harmonic Field Excitation

open access: yesIEEE Access, 2023
In this paper, a self-excited topology by utilizing third harmonic field excitation is proposed for realizing the brushless operation of the Wound Rotor Vernier Machine (WRVM).
Sheikh Yasir Hammad   +5 more
doaj   +3 more sources

High-Harmonic Injection-Based Brushless Wound Field Synchronous Machine Topology

open access: yesMathematics, 2021
This paper discusses the design and analysis of a high-harmonic injection-based field excitation scheme for the brushless operation of wound field synchronous machines (WFSMs) in order to achieve a higher efficiency.
Syed Sabir Hussain Bukhari   +4 more
doaj   +3 more sources

High-Efficient Brushless Wound Rotor Synchronous Machine Topology Based on Sub-Harmonic Field-Excitation Technique

open access: yesEnergies, 2021
This paper presents a new high-efficient three-phase brushless wound rotor synchronous machine (BL-WRSM) based on a sub-harmonic field excitation technique. In the proposed machine topology, the stator is equipped with two different three-phase windings:
Syed Sabir Hussain Bukhari   +3 more
doaj   +3 more sources

An harmonic equivalent excitation method for random vibration response

open access: yesAdvances in Mechanical Engineering, 2022
Many loads on engineering structures had obvious randomness, such as earthquakes, wind, sea waves, uneven pavement, etc. The calculation and analysis of random vibration were complicated and inefficient, which has perplexed the development of engineering
Kaiwei Wu, Chuanbo Ren, Lianzheng Li
doaj   +1 more source

Novel Single Inverter-Controlled Brushless Wound Field Synchronous Machine Topology

open access: yesMathematics, 2021
This paper proposes a novel brushless excitation topology for a three-phase synchronous machine based on a customary current-controlled voltage source inverter (VSI).
Syed Sabir Hussain Bukhari   +5 more
doaj   +1 more source

Research on the Orthogonal Fundamental Mode Fluxgate Sensor Circuit

open access: yesIEEE Access, 2020
Currently, magnetic fluxgate circuits used for magnetic field measurements mostly adopt parallel excitation second harmonic generation. The magnetic fluxgate developed by this method cannot possess both low noise and high bandwidth at the same time.
Zhenzhong Yuan   +4 more
doaj   +1 more source

Loss characteristics investigation of FSCW-PMSM under SVPWM inverter supply

open access: yes电力工程技术, 2023
To investigate the effects of time-harmonic current introduced by inverter on loss characteristics of fractional-slot concentrated-winding permanent magnet synchronous machine (FSCW-PMSM), a method is proposed to analyze the harmonic characteristics of ...
CHEN Zhenfei   +4 more
doaj   +1 more source

Dual-Inverter-Controlled Brushless Operation of Wound Rotor Synchronous Machines Based on an Open-Winding Pattern

open access: yesEnergies, 2020
In an open-winding machine, three-phase stator currents can be controlled such that the input armature currents may contain the third-harmonic current component in addition to the fundamental.
Syed Sabir Hussain Bukhari   +3 more
doaj   +1 more source

Application of square-wave inverter in excitation system for magnetic nanoparticle tomography

open access: yesAIP Advances, 2022
To collect the signals of magnetic nanoparticles (MNPs) at a distance from a magnetic nanoparticle tomography, a strong ac magnetic field should be generated by applying a high current to the excitation coil.
Kohta Higashino   +3 more
doaj   +1 more source

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