Results 11 to 20 of about 782,524 (251)

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

IEEE 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, Junaid Ikram, Rabiah Badar, Syed Sabir Hussain Bukhari, Laiq Khan, Jongsuk Ro   +5 more
doaj   +2 more sources

Novel Winding Design and Analysis of Brushless Wound Rotor Synchronous Machines

IET Electric Power Applications
Synchronous machines are electric machines characterised by a rotating speed proportional to the AC supply and are independent of load. Traditional permanent magnet synchronous machines utilise rare earth minerals for rotor flux generation, posing ...
Ahsan Fayyaz, Faizan Mehmood, Ch. Muhammad Arbab Waheed, Zahid Ullah   +3 more
doaj   +2 more sources

A novel brushless de‐excitation system for synchronous generators using a buck chopper with a freewheeling discharge resistor

IET Electric Power Applications, 2023
A new de‐excitation system for advanced brushless excitation based on a synchronous generator is presented. The proposed system uses a discharge resistor in series with a freewheeling diode of a buck chopper.
Gildas Martial Ngaleu, Aurélien Tamtsia Yeremou, Charles Hubert Kom, Samuel Eke, Arnaud Nanfak   +4 more
doaj   +2 more sources

Smart Solutions: A New Direct Current Electric Machine Design to Reduce Weight and Enhance Efficiency. [PDF]

Glob Chall
This article introduces a smart solution for the design of a brush DC motor with a winding‐free rotor (DCFR). The proposed model simplifies manufacturing, reduces material costs, and enhances efficiency. Designed for variable speed and solar power applications, the DCFR achieves 91.8% efficiency and a 21% weight reduction compared to conventional ...
Ivliev D, Bashynska I, Kosenkov V, Boiko A, Niekrasova L, Chepovskyi I.   +5 more
europepmc   +2 more sources

Excitation Control of Brushless Induction Excited Synchronous Motor with Induction Machine Operating in Deep-Plugging Mode

Power Electronics and Drives
The popularity of electrified transportation is rising at a sharp pace due to environmental concerns over internal combustion (IC) engines. Researchers are nowadays looking for a brushless and permanent magnet (PM)-less solution for electric vehicle (EV)
Mondal Amit Kumar, Basak Saptarshi, Chakraborty Chandan   +2 more
doaj   +2 more sources

Multiobjective Optimization Design of a Brushless Excitation Synchronous Motor Based on the Taguchi Method

Journal of Physics: Conference Series, 2023
Considering the issue of significant total harmonic distortion in the no-load back electromotive force (EMF) and torque ripple of a brushless excitation synchronous motor (BESM) used in a compressor, a multiobjective optimization design method of a BESM ...
Chuanhui Sun, Yu-fa Xu
semanticscholar   +1 more source

Observations of Field Current and Field Winding Temperature in Electrically Excited Synchronous Machines with Brushless Excitation

International Conference on Electrical Machines, 2022
Electrically excited synchronous machines have become an alternative in electrification of transportations and renewable power generations. To reduce the extra effort in the maintenance of sliprings and brushes for field excitation, brushless excitation ...
Junfei Tang, B. Jiang, Luca Boscaglia, Hao Chen, Yujing Liu   +4 more
semanticscholar   +1 more source

Improving ungated steady-state cardiac perfusion using transition bands. [PDF]

Magn Reson Med
Abstract Purpose Although gated first‐pass contrast‐enhanced sequences are the clinical standard for cardiovascular MR perfusion, some patient conditions necessitate using ungated steady‐state sequences. However, through‐plane cardiac motion and blood flow into the left ventricle can disrupt the magnetization steady state of the tissue, and perfusion ...
Mendes JK, Le JV, Arai AE, Ranjan R, DiBella EVR, Adluru G.   +5 more
europepmc   +2 more sources

Electromagnetic Design and Flux Regulation Analysis of New Hybrid Excitation Generator for Electric Vehicle Range Extender

Journal of Electrical and Computer Engineering, 2021
Aiming at the problem of uncontrollable magnetic field of permanent magnet generators, a new hybrid excitation generator (HEG) with parallel magnetic circuit is proposed.
Wenjing Hu, Xueyi Zhang, Huihui Geng, Ting Gao, Liwei Shi, Di You   +5 more
doaj   +1 more source

PM fractional machines adopting bonded magnets: effect of different magnetizations on the energetic performance [PDF]

, 2012
The adoption of Permanent Magnets in small brushless machines for automotive applications is becoming frequent. Some research on bonded magnets is being carried on to substitute the ferrites.
Ferraris, Luca, Ferraris, Paolo, Pošković, E., Tenconi, Alberto   +3 more
core   +1 more source