Current Sensor: Control of modern wind turbines - wind turbines, current sensor - Electrical industr

Current Sensor: Control of modern wind turbines - wind turbines

, current sensor - Electrical industr

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Through the use of modern materials to meet the mechanical requirements and the use of modern Electronic Components and power electronic components to the effective transmission network based, manufacturing has a rated power up to 5MW of modern wind turbines is possible. To converter optimal control, a variety of current Sensor In the wind turbine is essential for each converter component.

From the early days of human development, has wind energy as a Energy Use. Windmill will be contained in the wind energy conversion can be used for the pumping abrasive or mechanical energy available.

20 century and a half pages, many modern wind turbine design of the physical and theoretical basis to find. German engineers AlbertBetz published in his book in 1926 to calculate the ideal wind turbine is about the maximum theoretical efficiency of 59.3%. 20th century 40s, UlrichHtter developed for a two or three rotor blades of all free and high-speed operation of modern wind energy converter design theory.

Power control of wind turbines Wind is the result of air exchange group, the main effect of solar radiation by the formation of large temperature difference between the local or even caused. Such as forests, mountains and obstacles such as building a lasting change will affect the wind speed turbulence. Wind turbine rotor will be contained in the wind energy conversion is rotating (moving) energy, thus driving Generator Generate electricity.

Wind and thus the amount that can be used directly proportional to the cube of wind speed. Calculated by the rotor diameter of the rotor area and from the wind flowing through the area between the energy produced there is still a simple relationship. When the wind speed exceeds a fixed limit, in order to avoid mechanical and / or Electric Overload, wind turbines must be equipped with power controller. In general, hair Motor The rated power is a concern must be given to the threshold level.

Another equally important reason for power control. In order to provide continuous power to the grid, even though winds are changing every second, so that fat Motor To best run was necessary.

Turbines using a variety of power control. Degree of control can be passive or active realization of the rotor blades. Passive limit can be a special form of single rotor blades and to achieve. Under certain wind speed, the rotor rotating air suddenly disappeared (so-called stall), the rotor has stopped rotating (stall control).

Large-scale wind turbines are usually active power control system to regulate the rotor blade in its longitudinal axis within the (pitch control). Plane by adjusting the rotor blade angle, may control not only the generator power. At higher wind speed, the rotor blades can be a way to stop the rotor quickly reversed. Low-power electric drive is typically used for this purpose. In some Inverter , The small and PCB installed with a current sensor is widely used. These sensors are part of the converter closed-loop control, it can quickly respond. When the intelligent power control and generator used simultaneously, you can ensure that wind turbines (WET) starts in a very wide wind range for the network to provide continuous power, until the wind turbines in the ceiling when the shutdown date.

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