Results 101 to 110 of about 175,294 (335)

Different options for multi-rotor wind turbine grid connection

open access: yesThe Journal of Engineering, 2019
Here, different options for integration of the multi-rotor wind turbine (MRWT) concept are investigated. The intra-turbine collection network of the MRWT can be designed in either AC or DC. The reliability and costs associated with each connection option
Kamyab Givaki
doaj   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

open access: yesAdvanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi   +4 more
wiley   +1 more source

Natural Frequency of Rotor with Rotor Core.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1991
A rotor core of induction motors consists of many multilayered steel sheets for core which are fixed to a shaft with a shrinkage fit. A bending vibration of rotors with such a rotor core is investigated experimentally. It is shown that the rotor can be modelized by an opening of the multilayered steel sheets and a equivalent Young's modulus of the ...
Yoshio IWATA   +2 more
openaire   +2 more sources

Novel Winding Design and Analysis of Brushless Wound Rotor Synchronous Machines

open access: yesIET 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   +3 more
doaj   +1 more source

Control strategy of doubly-fed induction generator during the grid voltage swell

open access: yesThe Journal of Engineering, 2018
This study firstly derives the relationship between the grid voltage and the rotor current of doubly-fed induction generator (DFIG) during the grid voltage swell.
Zou Le   +5 more
doaj   +1 more source

Effect of rotor stiffness and lift offset on the aeroacoustics of a coaxial rotor in level flight [PDF]

open access: yes, 2009
The acoustic characteristics of a twin contra-rotating coaxial rotor configuration with significant flapwise stiffness are investigated in steady forward flight.
Brown, Richard   +2 more
core  

FiN‐Kiri: Fabric‐Based Inflatable Kirigami Actuator for Multimodal Soft Robots

open access: yesAdvanced Robotics Research, EarlyView.
This study introduces a type of inflatable fabric‐based kirigami actuator capable of performing bending motion. The actuator is utilized as soft grippers, a crawling robot and a swimming robot. The crawling robot demonstrated extraordinary motion capabilities, such as moving forward, turning and navigating a narrow tunnel.
Yang Yu   +12 more
wiley   +1 more source

Hybrid algorithm for rotor angle security assessment in power systems

open access: yesThe Journal of Engineering, 2015
Transient rotor angle stability assessment and oscillatory rotor angle stability assessment subsequent to a contingency are integral components of dynamic security assessment (DSA) in power systems.
D. Prasad Wadduwage   +2 more
doaj   +1 more source

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