Airflow generation device and wind power generation system

Patent metadata

Field	Value
Publication number	US-9709032-B2
Application number	US-201414210875-A
Country	US
Kind code	B2
Filing date	Mar 14, 2014
Priority date	Mar 21, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

An airflow generation device of an embodiment has a main body and a voltage application unit. The main body has a base formed of an insulating material and provided with a first electrode and a second electrode. The voltage application unit generates an airflow by applying voltage between the first electrode and the second electrode. Here, the main body is formed to include a portion which gradually decreases in thickness from a center portion to an end portion.

First claim

What is claimed is:

1. A wind power generation system, comprising:
an airflow generation device comprising: a main body having a base formed of an insulating material, the base provided with a first electrode and a second electrode; and a voltage application unit generating an airflow on a surface of the main body by applying voltage between the first electrode and the second electrode, wherein, in the main body, a connection conducting wire is provided inside the base; and
windmill blades on which the main body of the airflow generation device is disposed,
wherein a plurality of main bodies are provided as the main body of the airflow generation device, the plurality of main bodies being laid side by side in a blade span direction of the windmill blades;
wherein a plurality of connection conducting wires are provided inside the base in one main body among the plurality of main bodies; and
wherein the first electrode and the second electrode provided in another main body among the plurality of main bodies are electrically connected respectively to the plurality of connection conducting wires provided in the one main body.

2. The wind power generation system according to claim 1 ,
wherein the main body of the airflow generation device is disposed in a portion on a leading edge side on a surface on a blade back side of the windmill blade.

3. The wind power generation system according to claim 1 , further comprising:
a tower;
a nacelle disposed on an upper end portion of the tower; and
a rotor rotatably supported on a side end portion of the nacelle with the windmill blades being attached to a hub.

4. The airflow generation device according to claim 1 , wherein the base is formed of a resin.

5. The airflow generation device according to claim 1 , wherein the main body has a trapezoidal cross section.

Assignees

• Toshiba Kk

Inventors

• Matsuda Hisashi
• Yamazaki Kenichi
• Tanaka Motofumi
• Shimura Naohiko
• Asayama Masahiro
• Osako Toshiki

Classifications

• F03D7/022 Primary

  Adjusting aerodynamic properties of the blades · CPC title

• F05B2240/32

  with roughened surface · CPC title

• F03D7/0256

  Stall control (adjusting the blades in stall position F03D7/0224) · CPC title

• Y02E10/721

  Cross-Sectional Technologies · mapped topic

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title