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On the Development of Offshore Wind Turbine Technology: An Assessment of Reliability Rates and Fault Detection Methods in a Changing Market

open access: yesEnergies, 2022
Offshore wind turbine drive train technology is evolving as developers increase size, aim to maximise availability and adapt to changing electricity grid requirements.
Alan Turnbull   +3 more
doaj   +1 more source

Design and Implementation of Embedded Direct Drive SCARA Robot Controller with Resolved Motion Rate Control Method [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2020
Most of SCARA (Selective Compliance Articulated Robot Arm) direct drive robots today are equipped with a circular feedback system. The Resolved Motion Rate Control (RMRC) method increases the accuracy and compensates the lack of movement transmission ...
Shahram Dashti   +2 more
doaj   +1 more source

Direct Drive Servovalves Actuated by Amplified Piezo-Stacks: Assessment through a Detailed Numerical Analysis

open access: yesActuators, 2021
This paper presents a feasibility study using commercially available amplified piezo-stacks for the direct actuation of four-way three-position (4/3) direct drive servovalves.
Paolo Tamburrano   +5 more
doaj   +1 more source

Comparison of designs of synchronous machines with integrated torque transformer for renewable energy

open access: yesVestnik MGTU, 2023
Increasing the specific torque of electric machines is an urgent problem for a number of low-speed power electromechanical systems, one of such systems is a wind power plant.
Koniushenko E. V.   +2 more
doaj   +1 more source

Scaling direct drive robots [PDF]

open access: yesProceedings of 1995 IEEE International Conference on Robotics and Automation, 2002
Recent experimental and analytical evidence indicates that direct drive robots become very practical and economical at miniature and microscopic scales, so it is interesting to understand quantitatively the properties of direct drive robots under scaling transformations.
R.S. Wallace, J.M. Selig
openaire   +1 more source

Wind turbine technology battles: Gearbox versus direct drive - opening up the black box of technology characteristics

open access: yes, 2020
This paper studies the battle between two types of wind turbines, the gearbox wind turbine and the direct drive wind turbine. Applicable determinants that affect technological dominance for the wind turbine drive trains case are identified.
G. Kaa   +3 more
semanticscholar   +1 more source

Analysis of the PM Motor with External Rotor for Direct Drive of Electric Wheelchair

open access: yesCommunications, 2019
The paper deals with analysis of properties of synchronous motor with external permanent magnets rotor. The mathematical analysis and equivalent circuit of permanent magnet synchronous motor (SMPM) is presented.
Jan Kanuch, Peter Girovsky
doaj   +1 more source

PD Plus Dynamic Pressure Feedback Control for a Direct Drive Stewart Manipulator

open access: yesEnergies, 2020
In order to ensure good dynamic characteristics, servo valve is usually adopted as the drive part of Stewart manipulator which causes huge power consumption, while direct drive electro-hydraulic servo system has the advantages of energy saving, simple ...
Chenyang Zhang
doaj   +1 more source

Performance analysis and optimization of secondary U-shaped double-sided toroidal winding linear permanent magnet vernier machine

open access: yesEngineering Science and Technology, an International Journal
Aiming at the issues of low thrust density, significant thrust ripple, the lengthy end and the large axial attraction force in conventional single-sided distributed winding linear permanent magnet vernier machine (LPMVM), this paper presents an enhanced ...
Xiaozhuo Xu   +4 more
doaj   +1 more source

Electrical Generators for Large Wind Turbine: Trends and Challenges

open access: yesEnergies, 2022
This paper presents an overview of the emerging trends in the development of electrical generators for large wind turbines. To describe the developments in the design of electrical generators, it is necessary to look at the conversion system as a whole ...
Amina Bensalah   +2 more
doaj   +1 more source

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