direct drive
Power conversion for a modular lightweight direct-drive wind turbine generator
... 1.3. Lightweight Direct Drive Generators 8 air gap size in parts of the machine, increasing the stress in that area, which will further distort the machine. For this reason radial electrical machines need ...
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Magnetically geared pseudo direct drive for safety critical applications
... Pseudo Direct Drive (PDD®) electrical machine for primary flight control surface electromechanical ...to direct-drive or mechanically geared motor ...
12
Disturbance Observer-Based Motion Control Of Direct Drive Motors
... Direct drive motor is the driving part that directly connected to the driven part without using ...gearbox. Direct drive system is widely used for robots arm, machine tools, chip mounters, ...
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Design of a Stator Permanent Magnet Transverse Flux Machine for Direct-drive Application.
... Transverse Flux Machines have attracted strong research interest in the past 20 years particularly due to the availability of soft magnetic cores making three dimensional flux path easier to implement. TFM’s high torque ...
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Influence of control structures and load parameters on performance of a pseudo direct drive
... Pseudo Direct Drive (PDD), realised by mechanical and magnetic integration of a permanent magnet (PM) machine and a magnetic gear, can achieve torque densities in excess of 60 kNm/m 3 ...
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Dynamic structural design of offshore direct-drive wind turbine electrical generators
... Over the past years, the use of non-conventional drivetrain configurations for offshore purposes has arisen. With a view to increase the reliability and availability of the turbine, the direct-drive concept ...
42
Development of Millimeter Scale Motors for Miniature Direct Drive Robots
... precision engineering of transducer modules will climb as transducer displacements decrease as the square of the outer radius. Another drawback associated with reduced transducer size is the inevitable loss in step ...
202
Design Considerations for Permanent Magnet Direct Drive Generators for Wind Energy Applications
... Abstract—Permanent Magnet Direct Drive (PMDD) generators offer very high force density, high efficiency and low number of components. Due to these advantages, PMDD generators are getting popular in the wind ...
5
Modelling of direct drive motors for performance improvement by design and control
... stator. Direct drive stands for a drive without gearings directly connected to the ...a direct drive motor runs at lower speeds than motors with ...
83
Design and Realisation of Antenna Control Servo System using Direct Drive Motors
... system, Direct Drive technology is ...of direct drive motor as per the torque requirements imposed by the antenna ...of direct drive motors avoids gear box, thereby avoiding the ...
6
On the optimization of generators for offshore direct drive wind turbines
... effective direct drive generators, the designer should include a structural model of the generator along with the active material ...for direct drive ...
10
High Gain Direct Drive Target Designs and Supporting Experiments with KrF
... [2]. Direct drive ignition physics can be explored on the NIF by making use of polar direct drive and by reconfiguring the beams for spherically symmetric ...for direct drive: ...
5
High Power Direct Drive WECS Using Fuzzy Logic Controller
... This work shows the performance of an efficient experimental method for high power converter which is used in direct drive wind energy conversion systems. A large circulating current flows in the converter, ...
7
Evaluation of bearing technology in direct drive electrical generators
... The direct drive generator is a low speed application with high priority for reliability with an additional challenge to maintain a physical gap between stator subject to large electromagnetic ...
6
Wind Energy Conversion Systems for Direct-Drive PMSG Based On Discrete-Time Direct Torque Control with Fuzzy Logic
... discrete-time direct torque control (DTC) scheme for salient-pole permanent-magnet synchronous generators (PMSGs) used in the variable-speed, direct-drive wind energy conversion systems ...a ...
7
"Pseudo" Direct Drive Electrical Machines With Alternative Winding Configurations
... 5 Variation of normal operation torque with gear ratio and HSR pole number, ph TABLE I PARAMETERS OF STUDIED ALTERNATIVE WINDING PDD’S Quantity Value HSR Pole Pairs 2-8 Gear Ratio 4-15 C[r] ...
8
Is the future development of wind energy compromised by the availability of raw materials?
... and direct drive (with permanent magnets) wind turbine technologies ...However, direct drive wind turbine technology seems to be privileged from some wind turbine manufacturers, especially if ...
10
Multi-Objective Drive-Cycle Based Design Optimization of Permanent Magnet Synchronous Machines
... clustered drive-cycle points in a computationally efficient ...baseline direct-drive machine geometry is optimized for drive-cycle energy efficiency, torque ripple, weight, cost, and average ...
119
A Survey of Power Take-off Systems of Ocean Wave Energy
... vernier hybrid permanent magnet generator for use in direct drive wave energy converters. Linear primary 726[r] ...
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Design Of PID And Nonlinear PID Controller For Tracking Performance Of XY Table Ball Screw Drive System
... Direct drive system has no physical transmission between motor and load ...linear direct drive ...Secondly, direct drive is more expensive than ball screw ...screw drive ...
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