Results 31 to 40 of about 1,417,989 (292)

An Experimental Study on the Darrieus-Savonius Turbine for the Tidal Current Power Generation

Journal of Fluid Science and Technology, 2008
The Darrieus turbine is popular for tidal current power generation in Japan. It is simple in structure with straight wings rotating around a vertical axis, so that it has no directionality against the motion of tidal flow which changes its direction ...
Yusaku KYOZUKA
doaj   +1 more source

Design and Analysis of a Low-Speed and High-Torque Dual-Stator Permanent Magnet Motor With Inner Enhanced Torque

IEEE Access, 2020
Given the problem that the drive system of the traditional mine transportation winch outputs a large traction force through the cooperation of an induction motor and reducer to meet the needs of a large traffic volume and heavy-load starting, this paper ...
Jiaxu Zhang, Bingyi Zhang, Guihong Feng, Baoping Gan   +3 more
doaj   +1 more source

Numerical Investigation of Aerodynamic Performance and Structural Analysis of a 3D J-Shaped Based Small-Scale Vertical Axis Wind Turbine

Energies, 2023
Small vertical axis wind turbines (VAWTs) are often considered suitable for use in urban areas due to their compact design. However, they are also well known to offer poor performance at low wind speeds, which is a common situation in such environments ...
Oriol Bel Laveda, Marie-Alix Roche, Mohit Phadtare, Louise Sauge, Keerthana Jonnafer Xavier, Grishma Bhat, Divya Saxena, Jagmeet Singh Saini, Patrick G. Verdin   +8 more
doaj   +1 more source

Start-up torque improvement of permanent magnet synchronous motors [PDF]

Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting, 2002
The transient behavior of a permanent magnet synchronous motor is analyzed, and a method is proposed to improve its starting performance. Three banks of capacitors are connected in series between the three-phase source and the motor. A stability analysis is performed to demonstrate that a range of capacitance exists that is useful for improving the ...
Consoli A, Pillay P, RACITI, Angelo
openaire   +2 more sources

Investigation of torque characteristics in a novel permanent magnet flux switching machine with an outer-rotor configuration [PDF]

, 2014
This paper comprehensively investigates the torque characteristics of a novel permanent magnet flux switching machine with outer-rotor configuration.
Miao, Dong-Min, Shen, Jian-Xin, Luk, Patrick Chi-Kwong, Fei, Wei-Zhong   +3 more
core   +1 more source

Wind Tunnel Experiment: Temperature And Starting Torque Affect PMSG Generator When Connected To Vertical Axis Wind Turbine Blade

Journal of Applied Science and Engineering, 2022
Renewable energy sources are critical to reduce the use of fossil fuels that cause atmospheric Carbon dioxide (CO2) emissions. Wind power can be used to generate electricity as a green energy source.
Mintra Trongtorkarn, Thanansak Theppaya, Montri Luengchavanon, Shahariar Chowdhry   +3 more
doaj   +1 more source

Assessment of torque components in brushless permanent-magnet machines through numerical analysis of the electromagnetic field [PDF]

, 2005
For the calculation of torque in brushless (BL) alternating current motors a local method is proposed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air gap.
Dellinger, S.J., McGilp, M.I., Miller, T.J.E., Ionel, D.M., Popescu, M.   +4 more
core   +1 more source

Experimental Study of Self-starting Characteristics for H-Type Wind Turbine

Journal of Applied Fluid Mechanics, 2021
In order to study self-starting characteristics for H-type wind turbine, firstly, the effect of low Reynolds number and large separated flow on aerodynamic characteristics of airfoil were analyzed in detail, then two H-type wind turbines with different ...
J. Y. Zhu, P. Q. Liu
doaj  

MODELS OF SPIN TORQUE USING SELF-CONSISTENT SOLUTIONS OF THE MAGNETISATION AND SPIN ACCUMULATION [PDF]

, 2013
A model of spin accumulation (m) is proposed to develop theoretical approaches to calculate the m in any arbitrary magnetic structure. The model is based on generalising the approach of Zhang, Levy and Fert (PRL 88, 236601, 2002).
Chureemart, Phanwadee
core   +6 more sources

New Approach to Improve Starting Performance of Induction Motor Based on Optimal Starting Frequency

IEEE Access
The starting performance of induction motor (IM) has a prominent influence on the redundancy design and cost control of motor drivers. To make the starting torque as high as possible under the special setting of starting current, a new approach for ...
Haixu Chen, Chao Bi, Sen Li, Zhen Peng, Zhongxian Chen   +4 more
doaj   +1 more source