What does (1), (2) and (3) respectively in abuse figure signify? Constant power

Question

What does (1), (2) and (3) respectively in abuse figure signify? Constant power output regime, Constant CP regime, Cut-In Speed Constant CP regime. Constant Power Output regime, Cut-Out Speed Constant CP regime, Constant Power Output regime, Cut-In Speed Constant power output regime. Constant CP regime, Cut-Out Speed Cut-In Speed Constant CP regime, Constant power output regime When it comes to feeding the power generated from wind farms to the electricity grid, What kind of do power companies prefer? An alternating current (AC) with a nice square wave A dedicated Direct Current (DC) grid An alternating current (AC) with a nice mangle wave. An alternating current (AC) with a nice sinusoidal wave

Explanation / Answer

The turbine starts to generate power after a certain min speed. Operation at speeds below this speed is not economically worth. This speed is called cut-in speed. Beyond this point, it is desirable to run at constant Cp for best efficiency. But once maximum power limit is reached, the turbine is run at that constant power to aVoid damage to turbine. beyond the maximum speed for which turbine is designed, the turbine is not operated. That speed is called cut-out speed.

As per aboVe definitions, (1) (2) & (3) denotes option b)

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10) High voltage DC have lesser equipment costs, foot-print and losses oVer lon distance transmission. Hence DC is preferred.

Answer is option b)

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