Control strategy for constant-speed wind turbine in below rated wind speed

The objective of this thesis is to design a control strategy to improve power capture in below rated wind speed for constant speed pitch regulated wind turbines.To achieve the objective of this thesis, it is convenient to model rotor/wind-field interaction by a simple ordinary differential equation. It is also required to use a simple model to represent the dynamic behaviour of a grid connected constant speed horizontal axis wind turbine to assess the performance of the proposed control strategy. Simulink based simulations of the wind model and turbine dynamics combined with the control strategy is performed to analyse its performance and to estimate the extra power capture by using the control system in below rated wind speed in comparison to running the turbine with fixed blade pitch angle (without the use of control strategy) in the same region.The objective of this thesis is to design a control strategy to improve power capture in below rated wind speed for constant speed pitch regulated wind turbines.To achieve the objective of this thesis, it is convenient to model rotor/wind-field interaction by a simple ordinary differential equation. It is also required to use a simple model to represent the dynamic behaviour of a grid connected constant speed horizontal axis wind turbine to assess the performance of the proposed control strategy. Simulink based simulations of the wind model and turbine dynamics combined with the control strategy is performed to analyse its performance and to estimate the extra power capture by using the control system in below rated wind speed in comparison to running the turbine with fixed blade pitch angle (without the use of control strategy) in the same region

Iranian Professors’ Attitude toward the Iran-US Relationships in 1408 (2029)

The present research was performed to evaluate the Iran-US relationships in 2029 from the Iranian Professors’ point of view. Investigations were perfumed via future studies in two parts: The first part is based on library studies, and the second part is questionnaire-based field surveys, with the acquired data analyzed using MicMac and Scenario Wizard software tools. Based on the results of the analysis in the MicMac software, a total of 20 driver forces for the Iran-US relationships were identified. Considering the driver forces as descriptors of the Iran-US relationships, the most significant driver forces were found to be the government institutions context followed by the relationship-interfering countries, the role of the two countries’ leaders, future of the international system, think tanks, lobbies and pressure groups, nuclear capabilities and missile program of Iran, the role of geography, and historical records of the relationships between the two countries. Based on the outputs of the Scenario Wizard software, five scenarios were identified, including highly favorable, favorable, moderate, unfavorable, and highly unfavorable, with the development of the Iran-US relationships under the moderate scenario being highly probable