scholarly journals THD Reduction in Wind Energy System Using Type-4 Wind Turbine/PMSG Applying the Active Front-End Converter Parallel Operation

2018 ◽  
Author(s):  
Nadia Maria Salgado-Herrera ◽  
David Campos-Gaona ◽  
Olimpo Anaya-Lara ◽  
Aurelio Medina-Rios ◽  
Roberto Tapia-Sanchez ◽  
...  
Keyword(s):  
Wind Energy ◽  
Wind Turbine ◽  
Output Power ◽  
Energy System ◽  
Voltage Source ◽  
Total Output ◽  
Voltage Source Converter ◽  
Front End ◽  
Wind Energy System ◽  
Converter Topology

In this paper, the active front-end (AFE) converter topology for the total harmonic distortion (THD) reduction in a wind energy system (WES) is used. A higher THD results in serious pulsations in the wind turbine (WT) output power and in several power losses at the WES. The AFE converter topology improves capability, efficiency and reliability in the energy conversion devices; by modifying a conventional back-to-back converter, from using a single voltage source converter (VSC) to use pVSC connected in parallel the AFE converter is generated. The THD reduction is done by applying a different phase shift angle at the carrier of digital sinusoidal pulse width modulation (DSPWM) switching signals of each VSC. To verify the functionality of the proposed methodology, the WES simulation in Matlab-Simulink® is analyzed, and the experimental laboratory tests using the concept of rapid control prototyping and the real-time simulator Opal-RT® Technologies is achieved. The obtained results show a type-4 WT with total output power of 6MVA, generating a THD reduction up to 5.5 times at the WES.

scholarly journals THD Reduction in Wind Energy System Using Type-4 Wind Turbine/PMSG Applying the Active Front-End Converter Parallel Operation

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2458 ◽  
Author(s):  
Nadia Maria Salgado-Herrera ◽  
David Campos-Gaona ◽  
Olimpo Anaya-Lara ◽  
Aurelio Medina-Rios ◽  
Roberto Tapia-Sánchez ◽  
...  
Keyword(s):  
Wind Energy ◽  
Wind Turbine ◽  
Output Power ◽  
Energy System ◽  
Fourier Series Expansion ◽  
Total Output ◽  
Current Output ◽  
Front End ◽  
Wind Energy System ◽  
Converter Topology

In this paper, the active front-end (AFE) converter topology for the total harmonic distortion (THD) reduction in a wind energy system (WES) is used. A higher THD results in serious pulsations in the wind turbine (WT) output power and several power losses at the WES. The AFE converter topology improves the capability, efficiency, and reliability in the energy conversion devices; by modifying a conventional back-to-back converter, from using a single voltage source converter (VSC) to use pVSC connected in parallel, the AFE converter is generated. The THD reduction is achieved by applying a different phase shift angle at the carrier of digital sinusoidal pulse width modulation (DSPWM) switching signals of each VSC. To verify the functionality of the proposed methodology, the WES simulation in Matlab-Simulink® (Matlab r2015b, Mathworks, Natick, MA, USA) is analyzed, and the experimental laboratory tests using the concept of rapid control prototyping (RCP) and the real-time simulator Opal-RT Technologies (Montreal, QC, Canada) is achieved. The obtained results show a type-4 WT with a total output power of 6 MVA, generating a THD reduction up to 5.5 times of the total WES current output by Fourier series expansion.

Longitudinal Flight Control for a Novel Airborne Wind Energy System: Robust MIMO Control Design Techniques

2011 ◽  
Author(s):  
Nicholas Tierno ◽  
Nicholas White ◽  
Mario Garcia-Sanz
Keyword(s):  
Wind Energy ◽  
Wind Turbine ◽  
Flight Control ◽  
Synchronous Generator ◽  
Energy System ◽  
Polar Coordinate System ◽  
Additional Information ◽  
Wind Energy System ◽  
Aerodynamic Control ◽  
Control Surfaces

This paper deals with the longitudinal flight control for a novel Airborne Wind Energy (AWE) system: the EAGLE System. It is a tethered lighter-than-air flyer wind turbine composed of a blimp, several aerodynamic airfoils (wings) with specific aerodynamic control surfaces (ailerons, elevator, rudder), a counter-rotating aerodynamic rotor for the wind turbine (four identical sections, symmetrically arranged, with three blades each), an electrical synchronous generator attached to the counter-rotating rotors, and a tether to secure the airship and to transmit the generated power. Additional information can be found in US Patent, Provisional Application No. 61/387,432 developed by the authors. The designed system proposed here supports a 2.5 kW generator and flies at approximately 100 meters. The mathematical model developed for the AWE system incorporates a hybrid blimp-airfoil design, modeled using a hybrid Cartesian-polar coordinate system to capture the dynamics of both the airship and the tether, and includes the effect of the counter-rotating aerodynamic rotor of the wind turbine, as well as the aerodynamic control surfaces. This paper presents the design of a robust Multi-Input Multi-Output (MIMO) controller for the 3×3 longitudinal flight dynamics of the tethered airborne wind energy system. The control system is designed by applying sequential MIMO robust Quantitative Feedback Theory (QFT) techniques.

scholarly journals The Impact of the Wind Speed on the Dynamics of the Wind Energy System

2016 ◽  
Vol 22 (3) ◽  
pp. 628-633
Author(s):  
Florenţiu Deliu ◽  
Petrică Popov ◽  
Paul Burlacu
Keyword(s):  
Diesel Engine ◽  
Wind Speed ◽  
Wind Energy ◽  
Wind Turbine ◽  
Electric Power ◽  
Synchronous Generator ◽  
Energy System ◽  
Maximum Efficiency ◽  
Wind Energy System ◽  
The Impact

Abstract The paper analyzes the operation of electric power subsystem consisting of the naval marine wind turbine, the synchronous generator and the electric accumulators at linear and exponential variations of wind speed. The management system is analyzed using various functions of wind speed variation. This subsystem requires to capture the wind energy with maximum efficiency, so a diesel engine and a synchronous generator subsystem can be used only as a complementary source of energy.

Optimum Wind Turbine Site Matching for Three Locations in Saudi Arabia

2011 ◽  
Vol 347-353 ◽  
pp. 2130-2139
Author(s):  
Abdullrahman A. Al Shamma’a ◽  
Khaled E. Addoweesh ◽  
Ali Eltamaly
Keyword(s):  
Wind Speed ◽  
Wind Energy ◽  
Wind Turbine ◽  
Electric Energy ◽  
Energy System ◽  
Economic Benefits ◽  
Optimal Choice ◽  
Power Curve ◽  
Matching Problem ◽  
Wind Energy System

Wind energy has been most prevalently utilized to generate electric power due to non pollution to the environment and the conservation of fossil fuel resources. The energy generated from wind turbine depends on the wind site characteristics and the wind turbine parameters. So, the choice of certain wind turbine for specific site is very important in terms of price of electric energy generated from wind energy system. Therefore, optimal choice of wind turbine is one of the most crucial issues in the design of wind energy system, which can utilize wind energy as efficiently as possible and achieve the best economic benefits. So this paper introduces a new and simple mathematic formulation for the wind turbine-site matching problem, based on wind speed characteristics of any site and the power curve parameters of any wind turbine. Wind speed at any site is characterized by the scale parameter (c) and the shape parameter (k) of the Weibull distribution function. The power curve parameters of any wind turbine are characterized by the cut-in, rated, and furling speeds and the rated power. The new formulation method is derived based on a generic formulation for the product of the Capacity Factor (CF) and Normalized Power (PN). Three case studies are also presented to demonstrate the effectiveness of the proposed method to choose between a group of wind sites and a list of commercial wind turbines.

scholarly journals Development of Smart Monitoring System for Wind Energy System

2021 ◽  
Vol 15 ◽  
pp. 132-134
Author(s):  
Apapol Mahaveera ◽  
Sanya Pasuk
Keyword(s):  
Wind Energy ◽  
Wind Turbine ◽  
Real Time ◽  
Monitoring System ◽  
System Analysis ◽  
Energy System ◽  
The Internet ◽  
Prototype System ◽  
Wind Energy System ◽  
Investigation Process

The paper presents the development of monitoring system for a wind turbine prototype system. The proposed monitoring system is developed by the Labview computer programming. The system can connect to the wind turbine via the internet – as well as acquire monitored values and upload values into memories. Meanwhile, the system will show real-time values. Operating staffs can observe the wind turbine using the monitoring system and can take any actions on-time, if the wind turbine is not working properly. The results of the monitoring system indicate that the monitoring system is able to work properly and information can be used for investigation - the wind turbine and system analysis. The investigation process is very important for wind turbine operation in order to transmit energy to destinations.

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