Control design, implementation, and evaluation for an in-field 500 kW wind turbine with a fixed-displacement hydraulic drivetrain
<p>The business case for compact hydraulic wind turbine drivetrains is becoming ever stronger, as offshore wind turbines are getting larger in terms of size and power output. Hydraulic transmissions are generally employed in high-load systems and form an opportunity for application in multi...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2018-09-01
|
| Series: | Wind Energy Science |
| Online Access: | https://www.wind-energ-sci.net/3/615/2018/wes-3-615-2018.pdf |
| Summary: | <p>The business case for compact hydraulic wind turbine drivetrains is becoming
ever stronger, as offshore wind turbines are getting larger in terms of size
and power output. Hydraulic transmissions are generally employed in high-load
systems and form an opportunity for application in multi-megawatt turbines.
The Delft Offshore Turbine (DOT) is a hydraulic wind turbine concept
replacing conventional drivetrain components with a single seawater pump.
Pressurized seawater is directed to a combined Pelton
turbine connected to an electrical generator on
a central multi-megawatt electricity generation platform. This paper presents
the control design, implementation, and evaluation for an intermediate
version of the ideal DOT concept: an in-field 500 kW hydraulic wind
turbine. It is shown that the overall drivetrain efficiency and
controllability are increased by operating the rotor at maximum rotor torque
in the below-rated region using a passive torque control strategy. An active
valve control scheme is employed and evaluated in near-rated conditions.</p> |
|---|---|
| ISSN: | 2366-7443 2366-7451 |