Journal ArticleDOI
Adaptive sliding mode back-stepping pitch angle control of a variable-displacement pump controlled pitch system for wind turbines
TLDR
An adaptive sliding mode pump displacement controller and a back-stepping stroke piston controller are designed for the proposed pitch system such that the resulting pitch angle tracks its desired value regardless of external disturbances and uncertainties.Abstract:
A variable-displacement pump controlled pitch system is proposed to mitigate generator power and flap-wise load fluctuations for wind turbines The pitch system mainly consists of a variable-displacement hydraulic pump, a fixed-displacement hydraulic motor and a gear set The hydraulic motor can be accurately regulated by controlling the pump displacement and fluid flows to change the pitch angle through the gear set The detailed mathematical representation and dynamic characteristics of the proposed pitch system are thoroughly analyzed An adaptive sliding mode pump displacement controller and a back-stepping stroke piston controller are designed for the proposed pitch system such that the resulting pitch angle tracks its desired value regardless of external disturbances and uncertainties The effectiveness and control efficiency of the proposed pitch system and controllers have been verified by using realistic dataset of a 750 kW research wind turbineread more
Citations
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Journal ArticleDOI
Recent developments of control strategies for wind energy conversion system
Ramji Tiwari,N. Ramesh Babu +1 more
TL;DR: In this article, a comprehensive review of overall control strategies for wind energy conversion control is presented, which is intended to provide a suitable reference for further research in the field of wind energy.
Journal ArticleDOI
Adaptive intelligent techniques for microgrid control systems: A survey
TL;DR: In this article, a survey on adaptive and intelligent methods that have been applied to microgrid systems is presented, where the objective is to evaluate and classify the design control methods and evaluation algorithms for the micro-grid systems to maintain stability, reliability, and load variations by adjusting the controller parameters especially in standalone operation mode.
Journal ArticleDOI
Microgrid control methods toward achieving sustainable energy management
TL;DR: This review underscores many factors, challenges, and problems related to the sustainable development of MG control technologies in next-generation smart grid applications and will strengthen the efforts to develop economic, efficient, and long-lasting MGs for future smart grid use.
Journal ArticleDOI
Adaptive Sliding-Mode Control of an Offshore Container Crane With Unknown Disturbances
Gyoung-Hahn Kim,Keum-Shik Hong +1 more
TL;DR: The vibration suppression capability of the proposed ASMC method in the presence of ship motions, large initial swings, parameter uncertainties, and sudden disturbances is superior to the two compared methods.
Journal ArticleDOI
Finite-time sliding surface constrained control for a robot manipulator with an unknown deadzone and disturbance.
Seong Ik Han,Jang-Myung Lee +1 more
TL;DR: This paper presents finite-time sliding mode control with predefined constraints for the tracking error and sliding surface in order to obtain robust positioning of a robot manipulator with input nonlinearity due to an unknown deadzone and external disturbance.
References
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Book
Applied Nonlinear Control
TL;DR: Covers in a progressive fashion a number of analysis tools and design techniques directly applicable to nonlinear control problems in high performance systems (in aerospace, robotics and automotive areas).
Proceedings ArticleDOI
Robust adaptive control
Petros Ioannou,Jing Sun +1 more
TL;DR: In this article, the authors present a model for dynamic control systems based on Adaptive Control System Design Steps (ACDS) with Adaptive Observers and Parameter Identifiers.
Book
Hydraulic Control Systems
H. E. Merritt,Victor Pomper +1 more
TL;DR: In this article, the authors present an overview of the properties of hydraulic fluids and hydraulic power in control systems, including pressure and flow control Valves, and hydraulic pumps and motors.
BookDOI
Power conversion and control of wind energy systems
TL;DR: This chapter discusses Wind Energy Conversion System Configurations, which consists of Configuration of Fixed-Speed Wind Energy Systems, and Super- and Sub-synchronous Operation of DFIG, the largest and most complex of these systems.
Journal ArticleDOI
A novel pitch control system for a wind turbine driven by a variable-speed pump-controlled hydraulic servo system
TL;DR: In this paper, a pitch control system for a large wind turbine driven by a variable-speed pump-controlled hydraulic servo system was developed and verified for the path tracking control and path-positioning control of the pitch controller of the wind turbines by practical experiments in a full-scale test rig under different path profiles, load torques, and random wind speeds.