Armature and Field Controlled DC Motor Based Wind Turbine Emulation for Wind Energy Conversion Systems Operating over a Wide Range of Wind Velocity

2009 ◽  
pp. 117-125 ◽  
Author(s):  
Rahul Patel ◽  
Chetan V. Patki ◽  
Vivek Agarwal
Keyword(s):  
Wind Energy ◽  
Energy Conversion ◽  
Wind Turbine ◽  
Wind Velocity ◽  
Dc Motor ◽  
Wind Energy Conversion ◽  
Wind Energy Conversion Systems ◽  
Wide Range ◽  
Energy Conversion Systems

scholarly journals Measurement Uncertainty of Radiated Electromagnetic Emissions in In Situ Tests of Wind Energy Conversion Systems

2018 ◽  
Vol 16 ◽  
pp. 13-22 ◽  
Author(s):  
Sebastian Koj ◽  
Axel Hoffmann ◽  
Heyno Garbe
Keyword(s):  
Wind Energy ◽  
Measurement Uncertainty ◽  
Energy Conversion ◽  
Wind Velocity ◽  
Standard Procedure ◽  
In Situ Tests ◽  
Wind Energy Conversion ◽  
Wind Energy Conversion Systems ◽  
Energy Conversion Systems

Abstract. The electromagnetic (EM) emissions of wind energy conversion systems (WECS) are evaluated in situ. Results of in situ tests, however, are only valid for the examined equipment under test (EUT) and cannot be applied to series production as samples, as the measurement uncertainty for in situ environment is not characterized. Currently measurements must be performed on each WECS separately, this is associated with significant costs and time requirement to complete. Therefore, in this work, based on the standard procedure according to the “Guide to the Expression of Uncertainty” (GUM, 2008) the measurement uncertainty is characterized. From current normative situation obtained influences on the measurement uncertainty: wind velocity and undefined ground are evaluated. The influence of increased wind velocity on the measurement uncertainty is evaluated with an analytical approach making use of the dipole characteristic. A numerically evaluated model provides information about the expected uncertainty due to reflection on different textures and varying values of relative ground moisture. Using a classical reflection law based approach, the simulation results are validated. Thanks to the presented methods, it is possible to successfully characterize the measurement uncertainty of in situ measurements of WECS's EM emissions.

scholarly journals Some Issues Related to Power Generation Using Wind Energy Conversion Systems: An Overview

2005 ◽  
Vol 3 (2) ◽  
Author(s):  
Dr. R. C. Bansal ◽  
Dr. Ahmed F Zobaa ◽  
Dr. R. K. Saket
Keyword(s):  
Power Generation ◽  
Wind Energy ◽  
Energy Conversion ◽  
Wind Turbine ◽  
Wind Power ◽  
Reactive Power ◽  
Wind Power Generation ◽  
Wind Energy Conversion ◽  
Wind Energy Conversion Systems ◽  
Energy Conversion Systems

Design and successful operation of wind energy conversion systems (WECs) is a very complex task and requires the skills of many interdisciplinary skills, e.g., civil, mechanical, electrical and electronics, geography, aerospace, environmental etc. Performance of WECs depends upon subsystems like wind turbine (aerodynamic), gears (mechanical), generator (electrical); whereas the availability of wind resources are governed by the climatic conditions of the region concerned for which wind survey is extremely important to exploit wind energy. This paper presents a number of issues related to the power generation from WECs e.g. factors affecting wind power, their classification, choice of generators, main design considerations in wind turbine design, problems related with grid connections, wind-diesel autonomous hybrid power systems, reactive power control of wind system, environmental aspects of power generation, economics of wind power generation, and latest trend of wind power generation from off shore sites.

Different Strategies for Controlling Output Power Smoothing of a PMSG-Based Wind Energy Conversion Systems

2012 ◽  
Vol 13 (4) ◽  
Author(s):  
Alok Pratap ◽  
Abdul Motin Howlader ◽  
Tomonobu Senjyu ◽  
Atsushi Yona ◽  
Naomitsu Urasaki ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Wind Energy ◽  
Energy Conversion ◽  
Wind Turbine ◽  
Output Power ◽  
Wind Energy Conversion ◽  
Wind Energy Conversion Systems ◽  
Power Smoothing ◽  
Energy Conversion Systems ◽  
Grid Side

Abstract This paper deals with controlling the output power smoothing of a wind energy conversion systems (WECS) by using permanent magnet synchronous generator (PMSG). It uses the inertia control of the wind turbine and DC-link voltage control. The PMSG is connected to the grid through a generator-side converter and a grid-side inverter based on AC-DC-AC methods. The generator-side converter is used to control the torque of the PMSG while the grid-side inverter is used to control DC-Link voltage and grid voltage. Fuzzy logic is implemented to determine the torque command by using inertia of wind turbine. The inputs of the fuzzy logic are given by the operating point of the rotational speed of the PMSG and the difference between the wind turbine torque and the generator torque. From the proposed method, the generator torque is smoothed and kinetic energy generated by the inertia of the wind turbine is used to smooth the power fluctuations of PMSG. Also, a stable operation of WECS is achieved during the system fault by using the chopper circuit in the DC-link circuit. The output power smoothing is achieved with stability and low cost. The effectiveness of the proposed method is verified by the numerical simulations.

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