Integration of mechanical and electrical hardware for testing full scale wind turbine nacelles

Schkoda, Ryan F.; Fox, Curtiss

doi:10.1109/psc.2014.6808117

Cited by 17 publications

(19 citation statements)

References 3 publications

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“…The full test bench model incorporates many of the test bench's components including the drive motor and its associated control system, the shaft couplings, the reduction gearbox (including nonlinear tooth stiffness, shaft stiffness, and bearing stiffness), the low-speed shaft, and the nacelle including its main bearing, gearbox, gearbox bushings, and control systems. A detailed description of the full test bench may be found in [1]. The inputs to the multibody model of the disk are the forces and moments resulting from the hydraulic actuators, and the outputs are the displacements and velocities (linear and angular) of the disk.…”

Section: A Multibody Modeling (Simpack Plant)mentioning

confidence: 99%

“…C LEMSON University's Wind Turbine Drivetrain Testing Facility (WTDTF) houses two dynamometer test benches designed to test full-scale wind turbine nacelles [1]. The smaller of the two test benches is rated at 7.5-MW, while the larger one is rated at 15-MW.…”

Section: Introductionmentioning

confidence: 99%

“…The primary differences between the two LAUs are the number of hydraulic actuators, the presence of hydraulic accumulators on the 15-MW test bench, and the maximum available flow rate through the servovalves. Details can be found in [1] and [4].…”

Section: Introductionmentioning

confidence: 99%

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Sliding Mode Control of a Hydraulically Actuated Load Application Unit With Application to Wind Turbine Drivetrain Testing

Schkoda

2015

IEEE Trans. Contr. Syst. Technol.

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This paper presents a sliding mode control strategy for a load application unit (LAU) found at Clemson University's Wind Turbine Drivetrain Testing Facility in North Charleston, SC, USA. The LAU is a multiinput, multioutput, overactuated, nonlinear, dynamic system and is part of a 7.5-MW wind turbine nacelle test bench. First, a plant model of the system is developed. Second, a sliding mode control strategy is developed. This control strategy uses a pseudoinverse of the input influence matrix to account for the system being overactuated. The resulting reference signals are inputs to a sliding controller responsible for controlling the system's 24 hydraulic actuators. The results show that the proposed control strategy performs well and that the LAU may be suitable for replicating full-scale time-varying wind loads on the main shaft of a test nacelle. Also discussed are key areas for improvement and future research directions.

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Section: A Multibody Modeling (Simpack Plant)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sliding Mode Control of a Hydraulically Actuated Load Application Unit With Application to Wind Turbine Drivetrain Testing

Schkoda

2015

IEEE Trans. Contr. Syst. Technol.

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“…(3) It uses the computer technology promotes the degree of automation of the product reduce the operation button and handle, to improve the operating performance of the equipment. (4) Using microprocessor, large scale integrated circuit, power electronics devices that reduce the number of component parts in the mechanical and electrical integration products, volume small, the structure is simplified [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Research on the Construction Mode of Mechanical and Electrical Integration of Intelligent Control System based on Multi-agent Technique

Xiao-li¹

2016

Proceedings of the 2016 2nd International Conference on Social Science and Technology Education (ICSSTE 2016)

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In this paper, we conduct research on the construction mode of mechanical and electrical integration of intelligent control system based on the multi-agent technique. The development of the modern science and technology has greatly promoted the cross of different subjects and infiltration, caused the technological transformation and revolution in the field of engineering. In the field of mechanical engineering, because of rapid development of microelectronics technology and computer technology to the mechanical industry and its mechanical and electrical integration, which is formed by the penetration of the technology of mechanical industry structure, product, organization, function and structure, mode of the production and management system, great changes have taken place in industrial production by the mechanical electrification "ushered in the development of" mechatronics "as the characteristics of the stage. Our research combines the multi-agent technique to propose the new paradigm for mechanical and electrical integration which is innovative.

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“…Alternatively, the fully assembled drive train of a WTG can be investigated in realistic conditions at Ground Testing Facilities [5]. Among others such test facilities are built by Clemson University, United States [6], Fraunhofer IWES, Germany [7] or the National Renewable Energy Centre, England [8]. Compared to field experiments the advantage of all types of Ground Testing Facilities is the reproducible and deterministic characteristic of tests, which obviously cannot be achieved in field experiments, where the WTG is exposed to volatile aerodynamic conditions.…”

Section: Introductionmentioning

confidence: 99%

An extended inertia and eigenfrequency emulation for full-scale wind turbine nacelle test benches

Jassmann

Hakenberg

Abel

2015

2015 IEEE International Conference on Advanced Intelligent Mechatronics (AIM)

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The main causes of wind turbines failures are mechanical and electrical drive train components [1]. Since isolated simulation studies seem not to sufficiently reproduce load situations in the fully assembled and operated system, wind industry pays more and more attention to wind turbine System Test Benches. They allow for detailed load analysis within the complete drive train system and also for controller tests. For both investigations drive train dynamics of the wind turbine generator (WTG) are of high relevance. This dynamic behavior is mainly determined by the rotor's inertia which, due to its size, has to be dismounted for System Test Bench tests. By that, the dynamics of the remaining drive train change significantly. In order to still operate the WTG controller without modifying it and to allow for representative load analysis a Hardwarein-the-Loop (HiL) Controller needs to reproduce the realistic drive train behavior at the System Test Bench. This paper proposes a control concept which emulates the missing rotor related inertia as well as the drive train and the coupled rotor-drive train related eigenfrequencies which are both crucial for load analysis as well as controller tests. The proposed concept consists of a virtual spring-dampersystem combined with a subsidiary state feedback controller. The controller synthesis is conducted using a quadratic norm. The simulation results show that the eigenfrequencies can be reproduced with less than 2 % error. When time-discrete operation is considered, the results are slightly downgraded, so that alternative synthesis procedures need to be investigated in the future. The method proposed in this paper is based upon an experimentally verified inertia emulation method [2]. Furthermore the simulation models used throughout this simulation study are experimentally validated models of a 1 MW System Test Bench [3] at the Center for Wind Power Drives of RWTH Aachen University.

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Integration of mechanical and electrical hardware for testing full scale wind turbine nacelles

Cited by 17 publications

References 3 publications

Sliding Mode Control of a Hydraulically Actuated Load Application Unit With Application to Wind Turbine Drivetrain Testing

Sliding Mode Control of a Hydraulically Actuated Load Application Unit With Application to Wind Turbine Drivetrain Testing

Research on the Construction Mode of Mechanical and Electrical Integration of Intelligent Control System based on Multi-agent Technique

An extended inertia and eigenfrequency emulation for full-scale wind turbine nacelle test benches

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