Stability and Performances Analysis of Electromagnetic Stall Control System by Phase Plane Method

Abstract

The aim of this research is to evaluate the behavior of small scaled wind turbine system against strong wind input using electromagnetic stall control system. In general, the wind turbine system is generating energy from the revolution of blades. The revolution of blade is varying through the environmental wind that is swept to blade. Therefore, if there is strong wind then the revolution of blade is increased and consequently more energy will be generated. Essentially the wind turbine systems are located in the gale area in order to generate energy efficiently. However, there is a boundary of revolution of blade, especially in small-scaled turbine due to small inertia momentum. If the angular velocity exceeds the boundary of revolution then wind turbine system may breakdown. Thus in this paper, in order to avoid the malfunction of small-scaled wind turbine system, electromagnetic stall control (ESC) is suggested. ESC can control the angular velocity without having any connection with shaft. Thus, we would control angular velocity much efficiently than the conventional stall control method such as friction stall control. For stability determination and performance evaluation phase plane method is applied in order for certain determination of stability. As a consequence, we could verify the reliability of ESC system by phase plane method.

Alternative Braking Method for Small Scaled-Wind Turbines Connected DC Green House with Analogical Experiment on Blade Destruction

“…Therefore, for the sake of contactless purpose the magnets are utilized in order to magnetize the copper plate and as results the eddy current will flow. The torque earned from term fm is single set permanent magnetic brake torque on the rotor which is For the sake of stronger torque creation from magnetization, in this study we set 3 sets of permanent magnetic brake in parallel as described in Figure 5 Furthermore, equation (12) represents the decision function [18][19].…”

“…The output power of the 3φ AC generator displayed in (19). P G = η g P e (19) Here, η g is the power coefficient of the generator and P e is the electrical power received to the generator.…”