Results 31 to 40 of about 485,302 (167)

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   +1 more source

Brushless Synchronous Machine With Dual-Frequency Inverter for High Torque and Low Ripple Operation

IEEE Access
In this paper, a novel brushless synchronous machine topology is introduced with the integration of a double-frequency inverter system, which plays a pivotal role in generating a sub-harmonic magnetomotive force (MMF) that significantly enhances torque ...
Hafiz Mudassir Munir, Qasim Ali, Jose Rodriguez, Mohamed Abdelrahem   +3 more
doaj   +1 more source

Brushless Field Excitation Scheme for Wound Field Synchronous Machines

Applied Sciences, 2020
A new harmonic field excitation technique for the brushless operation of wound field synchronous machines (WFSMs) is proposed in this paper. The proposed scheme involves conventional three-phase and single-phase inverters operating at different ...
Syed Sabir Hussain Bukhari, Ghulam Jawad Sirewal, Faheem Akhtar Chachar, Jong-Suk Ro   +3 more
doaj   +1 more source

Evolution and optimization of a brushless doubly‐fed machine with an asymmetrical reluctance and magductance rotor

IET Renewable Power Generation, 2023
The brushless doubly‐fed machine (BDFM) utilizes an asymmetric composite rotor featuring salient pole reluctance and magductance to effectively compensate for the phase shift in space, as well as enhance magnetic field modulation effects, and is ...
Dingbang Long, Honghui Wen, Zhikang Shuai, Zhengzhou Ma   +3 more
doaj   +1 more source

A Cable‐Driven Parallel Wire Robot for Probe Positioning and Tissue Palpation on Curved Phantoms

Advanced Intelligent Systems, EarlyView.
A wearable cable‐driven parallel robot is introduced for autonomous ultrasound probe positioning and soft tissue palpation on curved surfaces. By combining visual feedback with tension‐optimized control, the system achieves millimeter‐scale positioning accuracy while enforcing safety force constraints.
Christina Patterson, Dinesh K. Patel, Carmel Majidi   +2 more
wiley   +1 more source

Steady State Operating Points of the Doubly Fed Cascaded Induction Machine

Eletrônica de Potência, 2012
Doubly Fed Induction Machines (DFIM) have many industrial applications and are also used as Wind Power generators. The brushes, necessary to supply energy to the rotor, are the main drawback of these machines.
Fellipe. L. Neves, Carlos H. S. de Vasconcelos, Antonio C. Ferreira, Danilo. B. Lima, Richard. M. Stephan   +4 more
doaj   +1 more source

UAV‐Based Precision Seed Dropping for Automated Reforestation

Journal of Field Robotics, EarlyView.
ABSTRACT Wildfires and deforestation pose significant threats to forest ecosystems, motivating scalable methods for reforestation beyond labor‐intensive cultivation of native forest seedlings in nurseries. To enable large‐scale direct seeding of native species, this paper presents the design, analysis, and field evaluation of a UAV‐based seed‐dropping ...
Qi Rui Lee, Henrik Hesse, Khuanphirom Naruangsri, Worayut Takaew, Stephen Elliott, Dinesh Bhatia   +5 more
wiley   +1 more source

Influence of Temperature on Brushless Synchronous Machine Field Winding Interturn Fault Severity Estimation

Applied Sciences
There are numerous methods for detecting interturn faults (ITFs) in the field winding of synchronous machines (SMs). One effective approach is based on comparing theoretical and measured excitation currents. This method is unaffected by rotor temperature
Rubén Pascual, Eduardo Rivero, José M. Guerrero, Kumar Mahtani, Carlos A. Platero   +4 more
doaj   +1 more source

Design and Optimization of a Brushless Wound-Rotor Vernier Machine

Energies, 2018
In this paper, a permanent magnet (PM)-less, brushless, wound-rotor vernier machine (BL-WRVM) is proposed for variable speed applications such as electric vehicles and washing machines.
Qasim Ali, Asif Hussain, Noman Baloch, Byung il Kwon   +3 more
doaj   +1 more source

A High‐Resolution Self‐Powered Angular Displacement Sensor Based on Triboelectric Nanogenerator With Time‐Grating

Advanced Science, Volume 13, Issue 56, 9 October 2026.
A self‐powered phase‐encoding sensing paradigm enables direct motion‐to‐time information conversion, providing a compact and autonomous strategy for high resolution angular displacement measurement. ABSTRACT In modern manufacturing and engineering, angular displacement sensors are crucial for motion control and feedback systems in Electromechanical ...
Shuxian Wang, Donghang An, Shiyou Liu, Zhiyi Wu   +3 more
wiley   +1 more source