A Hardware in the loop simulator development for wind energy conversion systems

Download

index.pdf

Date

2019

Author

Pourkeivannour, Siamak

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

250
views

126
downloads

In this thesis a wind turbine emulator is developed to replicate the mechanical and electrical behavior of a real wind energy conversion system. A scaling down algorithm is developed to scale down the mechanical behavior of a real wind energy conversion system to a laboratory scale wind turbine emulator. A user interface software is developed to be used as a supervisory control and data acquisition system for the wind turbine emulator in LABVIEW environment. The accuracy of the scaling down algorithm is verified using a MATLAB simulation environment and comparing the simulation and experimental results. Next, a microgrid is developed both in simulation and experimental environments. The developed microgrid is capable of operating in grid-connected and islanded mode. Then the developed microgrid is used to investigate the voltage and frequency deviations in the islanding event transition period using three control methods; the DC-braking resistance, the pitch angle control method and the load shedding method. To verify the accuracy of the developed system, the transients caused by the islanding event is compared for the simulation and experimental environments. Different load consumption and power generation scenarios are investigated in the islanding transition event. Finally, the transient results for the voltage and frequency of the microgrid are analyzed and discussed based on the grid regulation codes prepared by Turkey electrical grid distributor, TEİAŞ, given in chapter 5. It is found out that when the turbine produces more power than the microgrid consumption the frequency and voltage oscillation magnitudes get larger as the difference between the two is larger during transition to islanding mode. It is also found that the oscillation magnitudes get larger as the power factor becomes smaller than unity. In addition, while the oscillation magnitude of the voltage and frequency increases the settling time for the corresponding variable rises. The results indicate that for the scenarios in which the power generation is higher than the load consumption in the microgrid with the value of 0.6 p.u. or higher, the microgrid frequency oscillations overpasses the grid regulation limitations. While the voltage of the microgrid exceeds the voltage ride through regulation limits, which is plotted in chapter 6, when the generation in the microgrid is higher than the consumption value of 0.7 p.u. or higher. On the other side the power factor of the loads in the microgrid affects the islanding transition oscillations. In the future, other control methods will be investigated for the scenarios which their oscillations are beyond the grid regulation limits.

Subject Keywords

Wind power., Keywords: Wind Energy Conversion Systems, Wind Turbine Emulators, Distributed Generation, Microgrid.

URI

http://etd.lib.metu.edu.tr/upload/12624697/index.pdf
https://hdl.handle.net/11511/44485

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Investigation of inertial support limits in wind turbines and the effects on the power system stability Duymaz, Erencan; Keysan, Ozan; Department of Electrical and Electronics Engineering (2019) In this study, the inertial support implementation is studied for variable speed wind turbines with a full-scale power electronics. To increase the active power as desired, Machine Side Converter is modified with an additional control loop. In the first part of the thesis, active power of the wind turbine is increased to the limits and the maximum achievable active power is found out to be restricted by the wind speed. It is found that the wind turbine can increase its output power by 40% of rated power in ...
Development of a hardware-in-the-loop wind energy conversion system emulator / Cengiz, Gökmen; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2015) This thesis focuses on developing a hardware-in-the-loop wind energy conversion system emulator. In addition, software for simulating the hardware-in-the-loop system is developed. The thesis describes how a wind turbine model is developed by controlling an induction motor to emulate wind turbine shaft. Control of the overall hardware-in-the-loop system for achieving an accurate medium for wind energy conversion system emulation is explained. The software uses the same model for the wind turbine as the HIL s...
Stochastic modelling of wind energy generation Alişar, İbrahim; Sevaioğlu, Osman; Department of Electrical and Electronics Engineering (2012) In this thesis work, electricty generation modeling of the wind energy -one type of the renewable energy sources- is studied. The wind energy characteristics and the distribution of wind speed in a specific region is also examined. In addition, the power curves of the wind turbines are introduced and the relationship between the wind speed and wind power is explained. The generation characteristics of the wind turbines from various types of producers are also investigated. In this study, the main wind power...
Design and analysis of test rig for small scale wind turbine blade İçen, Mustafa.; Çöker, Demirkan; Department of Aerospace Engineering (2019) In this thesis, a test setup for the experimental 5 meter RÜZGEM wind turbine blade and that can be used for small scale wind turbine blades up to 9 meter is designed and analyzed. The purpose of this thesis is to help establishing the test infrastructure under METUWIND project such as NREL, RISØ, CRES. The literature on the existing facilities is reviewed. After that, RÜZGEM wind turbine blade is introduced and design loads are presented. To apply these loads appropriately to the blade, the moment distribu...
A direct drive permanent magnet generator design for a tidal current turbine SeaGen Keysan, Ozan; Markus, Mueller (2011-05-15) In this study, the feasibility of a direct-drive permanent magnet generator for a tidal turbine power take-off system, namely MCT's SeaGen - the world's first full scale commercial tidal turbine- has been investigated. The investigated PM generator topology is called C-GEN which is an air-cored axial-flux generator developed in the University of Edinburgh. The C-GEN is prior to conventional PM generators by absence of magnetic attraction forces between rotor and stator, absence of cogging torque, ease of ma...

Citation Formats

S. Pourkeivannour, “A Hardware in the loop simulator development for wind energy conversion systems,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Electrical and Electronics Engineering., Middle East Technical University, 2019.