WIND POWER GENERATION DEVICE AND CONTROL METHOD THEREFOR

• Main Authors: YOSHIKAWA MASATOSHI, KAKUYA HIROMU
• Format: Patent
• Language: English; Japanese
• Published: 06.02.2020
• Subjects: BLASTING; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

To provide a wind power generation device capable of suppressing mechanical consumption while reducing a yaw deviation angle and improving a power generation amount through yaw control corresponding to a wind turbulence degree that is calculated at low cost and accurately, and a control method therefor.SOLUTION: A wind power generation device 1 comprises: a rotor 4 which is rotated by receiving a wind; a nacelle 5 which supports the rotor 4 in a rotatable manner; a tower 7 which supports the nacelle 5 in a yaw rotatable manner; an adjustment device 8 for adjusting a yaw of the nacelle 5 based on a yaw control command; and a control device 9 which determines the yaw control command to be sent to the adjustment device 8. The control device 9 includes: a yaw deviation angle calculation part 301 for calculating a yaw deviation angle from a value measured by a wind direction/wind velocity measuring part and a direction of the rotor 4; a wind turbulence degree calculation part 302 for calculating a wind turbulence degree from the value measured by the wind direction/wind velocity measuring part; and a control command creation part 304 which determines the yaw control command based on the yaw deviation angle and the wind turbulence degree. In the case where the wind turbulence degree is high, the control command creation part 304 stops yaw rotation on early stage.SELECTED DRAWING: Figure 3 【課題】低コストで精度よく算出した風の乱れ度に応じたヨー制御により、ヨー偏差角を低減して発電量を向上しつつ、機械的消耗を抑制し得る風力発電装置とその制御方法を提供する。【解決手段】風力発電装置１は、風を受けて回転するロータ４、ロータ４を回転可能に支持するナセル５、ナセル５をヨー旋回可能に支持するタワー７、ヨー制御指令に基づいてナセル５のヨーを調整する調整装置８、及び、調整装置８に送るヨー制御指令を定める制御装置９を備える。制御装置９は、風向風速測定部により測定された値とロータ４の方向からヨー偏差角を算出するヨー偏差角計算部３０１、風向風速測定部により測定された値から風の乱れ度を算出する風の乱れ度計算部３０２、ヨー偏差角と風の乱れ度に基づきヨー制御指令を定める制御指令作成部３０４を備え、制御指令作成部３０４は、風の乱れ度が高い場合、ヨー旋回を早く停止する。【選択図】 図３