In this paper, a wind turbine simulator is developed using PSCAD. The wind turbine static characteristics are modeled using the relation among the turbine power, the wind speed, and the blade pitch angle. Also, the dynamic characteristics of the wind turbine are modeled through a two-mass oscillating system, representing the turbine and the generator connected by elastic shaft. The system consi...

Abstract Multi‐rotor floating wind turbines are among the innovative technologies proposed in last decade effort to reduce cost of energy. These systems able offer advantages terms smaller blades deployed offshore, cheaper operations, fewer installations, and sharing platform. As blade‐pitch actuation system is prone failures, assessment associated load scenarios commonly required. Load fault h...

The purpose of the current test program is to produce a new dataset with sufficient documentation to be useful for correlation, development, and refinement of aerodynamic models at high thrust. An aerodynamic limits test was conducted in the 7by 10-Foot Wind Tunnel at Ames Research Center. The objectives of the test were to measure the performance and control loads of the rotor in nominal thrus...

Traditional wind turbine control algorithms attempt to maximize power capture at low speeds and maintain rated power at high wind speeds. Active power control refers to a mode of operation where the turbine tracks a desired power reference command. Active power control enables wind farms to perform frequency regulation and to provide ancillary services in the energy markets. This paper presents...

A control strategy is realized which solve the problem of output power regulation of variable speed wind energy conversion systems by combining a linear control for blade pitch angle with a nonlinear H∞ torque control which mitigate the effects of external disturbances that occur at the input and output of the system. The controller exhibits better power and speed regulation when compared to cl...

This article describes an experimental investigation of the aerodynamic interaction that occurs between distributed propellers in forward flight. To this end, three were installed close proximity a wind tunnel, and changes their performance, flow-field characteristics, noise production quantified using internal force sensors, total-pressure probes, particle-image velocimetry (PIV), microphones ...

This paper studies a flight load test method for helicopter blade, including the structural force of strain gauge bridge modification, calibration and establishment equation in typical maneuvers. First, blade structure was analyzed gauges were pasted profile which considered to be important positions analysis safe helicopter. Second, Load equations obtained by ground test, would used convert ti...

This paper describes a simulation model that has been used for controller design and stability and performance analysis of a micro X-CELL helicopter as central element of the Autonomous Scout Rotorcraft Testbed (ASRT) developed at Georgia Institute of Technology, Atlanta, USA. The general model, simple, yet comprehensive and efficient for the task at hand, consists of the following elements: he...

This work presents a systematic approach to analyzing the aerodynamic characteristics of tandem rotor forward autorotation considering rotor-to-rotor interference. The single-rotor computational model trimmed from generic helicopter flight dynamics analysis program was used as baseline model. effectiveness is demonstrated by comparison with data wind tunnel tests performed in this work. disk an...