发明名称 |
Wind turbine generator, method, and program thereof |
摘要 |
A rotor having a plurality of wind turbine blades, a generator to be driven by rotation of the rotor, a pitch angle controller for controlling a pitch angle of the wind turbine blades according to a speed of a generator, and a comparing and selecting section are provided. When the voltage of the utility grid is a predetermined value or less, the pitch angle controller controls the pitch angle so that the wind turbine blades do not move to a fine side. Further, the comparing and selecting section compares a temporary pitch angle command value determined based on the speed of the generator with a previous value of a pitch angle command value, and when the temporary pitch angle command value is a command for controlling the wind turbine blades closer to the fine side than the previous value, outputs the previous value as a current pitch angle command value. |
申请公布号 |
US9024459(B2) |
申请公布日期 |
2015.05.05 |
申请号 |
US201214240926 |
申请日期 |
2012.10.03 |
申请人 |
Mitsubishi Heavy Industries, Ltd. |
发明人 |
Arinaga Shinji;Yasugi Akira;Matsushita Takatoshi |
分类号 |
F02D9/00;F03D7/02 |
主分类号 |
F02D9/00 |
代理机构 |
|
代理人 |
Kanesaka Manabu;Hauptman Benjamin;Berner Kenneth |
主权项 |
1. A wind turbine generator, comprising:
a rotor having a plurality of wind turbine blades; a generator to be driven by rotation of the rotor; and a pitch angle control part for controlling a pitch angle of the wind turbine blades according to a speed of the generator, wherein when a voltage of a utility grid is a predetermined value or less, the pitch angle control part controls the wind turbine blades based on a pitch angle command value for making the wind turbine blades unmovable to a fine side, and the pitch angle control part comprises a comparing and selecting means for, when the voltage of the utility grid is the predetermined value or less, comparing a temporary pitch angle command value as a command value of a temporary pitch angle determined based on the speed of the generator with a previous value as the previous pitch angle command value; and when the temporary pitch angle command value is a command for controlling the wind turbine blades closer to the fine side than the previous value, outputting the previous value as the current pitch angle command value. |
地址 |
Tokyo JP |