A novel pitch control system for a wind turbine driven by a variable-speed pump-controlled hydraulic servo system
Resource
Mechatronics, 21(4), 753-761
Journal
Mechatronics
Pages
753-761
Date Issued
2011
Date
2011
Author(s)
Abstract
The paper aims to develop a novel pitch control system for a large wind turbine driven by a variable-speed pump-controlled hydraulic servo system. To perform practical pitch control experiments, a full-scale test rig of the hydraulic pitch control system for a 2 MW wind turbine's blade, including a novel pitch control mechanism, a variable-speed pump-controlled hydraulic servo system, a disturbance system and a PC-based control system, is designed and set up. The variable-speed pump-controlled hydraulic servo system, containing an AC servo motor, a constant displacement hydraulic piston pump two differential hydraulic cylinders and hydraulic circuits, achieved high response and high energy efficiency, so it is suitable for wind turbine applications. Besides, to implement the pitch control in the proposed novel pitch control system, an adaptive fuzzy controller with self-tuning fuzzy sliding-mode compensation (AFC-STFSMC) is developed to design the pitch controller. Finally, the developed variable-speed pump-controlled hydraulic servo system was built and verified for the path tracking control and path-positioning control of the pitch control of the wind turbines by practical experiments in a full-scale test rig under different path profiles, load torques, and random wind speeds. © 2010 Elsevier Ltd. All rights reserved.
SDGs
Other Subjects
AC motors; Controllers; Energy efficiency; Fuzzy systems; Hydraulic motors; Hydraulic servomechanisms; Hydraulic turbines; Navigation; Piston displacement; Pumps; Servomechanisms; Speed; Tuning; Wind turbines; Adaptive fuzzy controller; High energy efficiency; Hydraulic servo system; Path tracking control; PC-based control systems; Pitch control; Turbine applications; Variable-speed pumps; Adaptive control systems
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
48.pdf
Size
23.44 KB
Format
Adobe PDF
Checksum
(MD5):e6752fc80547de1012abb3facd7e8181