Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine

A critical speed controller for avoiding a certain rotational speed is presented. The controller is useful for variable speed wind turbines with a natural frequency in the operating range. The controller has been simulated, implemented and tested on an open site 12 kW vertical axis wind turbine prot...

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Bibliographic Details
Main Authors: Morgan Rossander, Anders Goude, Sandra Eriksson
Format: Article
Language:English
Published: MDPI AG 2017-10-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/10/11/1699
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author Morgan Rossander
Anders Goude
Sandra Eriksson
author_facet Morgan Rossander
Anders Goude
Sandra Eriksson
author_sort Morgan Rossander
collection DOAJ
description A critical speed controller for avoiding a certain rotational speed is presented. The controller is useful for variable speed wind turbines with a natural frequency in the operating range. The controller has been simulated, implemented and tested on an open site 12 kW vertical axis wind turbine prototype. The controller is based on an adaptation of the optimum torque control. Two lookup tables and a simple state machine provide the control logic of the controller. The controller requires low computational resources, and no wind speed measurement is needed. The results suggest that the controller is a feasible method for critical speed control. The skipping behavior can be adjusted using only two parameters. While tested on a vertical axis wind turbine, it may be used on any variable speed turbine with the control of generator power.
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spelling doaj.art-0ae3d6c59d724f8bacdb31bde4f4f1f82022-12-22T03:59:18ZengMDPI AGEnergies1996-10732017-10-011011169910.3390/en10111699en10111699Critical Speed Control for a Fixed Blade Variable Speed Wind TurbineMorgan Rossander0Anders Goude1Sandra Eriksson2Division of Electricity, Department of Engineering Sciences, Uppsala University, Box 534, 751 21 Uppsala, SwedenDivision of Electricity, Department of Engineering Sciences, Uppsala University, Box 534, 751 21 Uppsala, SwedenDivision of Electricity, Department of Engineering Sciences, Uppsala University, Box 534, 751 21 Uppsala, SwedenA critical speed controller for avoiding a certain rotational speed is presented. The controller is useful for variable speed wind turbines with a natural frequency in the operating range. The controller has been simulated, implemented and tested on an open site 12 kW vertical axis wind turbine prototype. The controller is based on an adaptation of the optimum torque control. Two lookup tables and a simple state machine provide the control logic of the controller. The controller requires low computational resources, and no wind speed measurement is needed. The results suggest that the controller is a feasible method for critical speed control. The skipping behavior can be adjusted using only two parameters. While tested on a vertical axis wind turbine, it may be used on any variable speed turbine with the control of generator power.https://www.mdpi.com/1996-1073/10/11/1699vertical axis wind turbinevariable speedcontroloptimal torquecritical speedspeed exclusion zonenatural frequencieseigenfrequencies
spellingShingle Morgan Rossander
Anders Goude
Sandra Eriksson
Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine
Energies
vertical axis wind turbine
variable speed
control
optimal torque
critical speed
speed exclusion zone
natural frequencies
eigenfrequencies
title Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine
title_full Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine
title_fullStr Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine
title_full_unstemmed Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine
title_short Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine
title_sort critical speed control for a fixed blade variable speed wind turbine
topic vertical axis wind turbine
variable speed
control
optimal torque
critical speed
speed exclusion zone
natural frequencies
eigenfrequencies
url https://www.mdpi.com/1996-1073/10/11/1699
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