Mitsubishi Heavy Industries Limited

Tsutomu Kii

Akira Yasugi

Mitsuya Baba

Yoshiaki Hori

A yaw control system for a wind turbine generator includes a yaw direction sensor for detecting a yaw direction value of the nacelle at a current time, a yaw rotation amount calculation part for calculating an amount of yaw rotation of the nacelle in a predetermined period of time based on a yaw rotation speed and a yaw rotation time of the nacelle, a yaw direction estimation part for calculating an estimate value of a yaw direction of the nacelle at an end point of the predetermined period by an estimate value calculation logic based on the amount of yaw rotation in the predetermined period calculated by the yaw rotation amount calculation part and the yaw direction value at a starting point of the predetermined period, and a yaw drive control part for controlling the yaw drive mechanism.

Yaw control system and yaw control method for wind turbine generator

An output control device for a wind farm which includes n number of wind turbines includes a WTG output obtaining unit for obtaining a current output Pof each of the wind turbines; an extractable output calculation unit for calculating an extractable output Pmaxfor each of the wind turbines; a potential output calculation unit for calculating a potential output Ppotof each of the wind turbines based on a difference between the extractable output Pmaxand the current output Pof each of the wind turbines; and a WTG output determination unit for determining an output command value of each of the wind turbines so that a total output Pof the wind farm becomes closer to an output target value P*. The WTG output determination unit assigns an output increase amount to each of the wind turbines and to determine the output command value.

Output control device and output control method for wind farm

An output control apparatus for a wind turbine, including an output difference calculation unit; a maximum output rate setting unit; an output command value calculation unit; and an output control unit, wherein the maximum output rate setting unit is configured so that the larger an absolute value of the difference is, the higher the maximum output rate is set at least in a range that the absolute value of the difference is not greater a threshold value.

Output control apparatus and output control method for wind turbine

An object is to suppress an output power reduction of a wind turbine generator system caused by a drop in the wind speed while the output power is being reduced according to an output-power reduction demand. When the output-power reduction demand to reduce the output power at an interconnection point to a predetermined output-power limit value is notified from a utility grid side, priorities are set such that higher priorities are given to wind turbines whose output powers are larger, and a preset minimum output-power value is set in output power commands for the wind turbines sequentially in descending order of priority, until the output power at the interconnection point reaches the output power limit value.

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Tokyo, Japan

Tsutomu Kii