# US 2014/0193256 A1 · Wind power generation apparatus

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- Number: US 2014/0193256 A1
- Document ID: US20140193256A1
- Status: Published application
- Kind: A1
- Application number: 14/208,509
- Filed: 2014-03-13
- Published: 2014-07-10
- Earliest claimed: 2011-09-15
- Assignees: Kabushiki Kaisha Toshiba
- Applicants: Kabushiki Kaisha Toshiba
- Inventors: Hisashi MATSUDA; Motofumi Tanaka; Shohei Goshima; Kunihiko Wada; Tamon Ozaki; Toshiki Osako
- Web page: https://patentgrep.com/patent/US20140193256A1

## CPC

- F03D 7/02: the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D 1/0675: {of the blades}
- F03D 7/022: {Adjusting aerodynamic properties of the blades}
- F03D 7/0232: {with flaps or slats (with aerodynamic drag devices on the blades for braking F03D7/0252)}
- F05B 2240/30: Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B 2240/3052: adjustable
- F05B 2240/31: of changeable form or shape
- Y02E 10/72: Wind turbines with rotation axis in wind direction
- F03D: WIND MOTORS
- F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

There is provided a wind power generation apparatus capable of suppressing power consumption in an airflow generation device, and securely suppressing flow separation on a blade surface, thereby improving efficiency. A wind power generation apparatus 10 of an embodiment has wind turbine blades 32 each having, in a chord length direction, a base blade 51 fixed to a rotation shaft and a front divided blade 50 fixed in a pivotally adjustable manner, a first electrode 41 and a second electrode 43 which are disposed separately via a dielectric 42 on a blade surface of at least one of the base blade 51 and the front divided blade 50, and a discharge power supply 61 capable of applying voltage between the first electrode 41 and the second electrode 43.

## Claims

### Claim 1

A wind power generation apparatus, comprising:
wind turbine blades each having, in a chord length direction, a first blade fixed to a rotation shaft and a second blade fixed in a pivotally adjustable manner;
a pair of electrodes disposed separately via a dielectric on a blade surface of at least one of the first blade and the second blade; and
a voltage application mechanism capable of applying voltage between the pair of electrodes.

### Claim 2 (depends on 1)

The wind power generation apparatus according to claim 1,
wherein a plurality of the second blades are provided.

### Claim 3 (depends on 1)

The wind power generation apparatus according to claim 1,
wherein the pair of electrodes is disposed on a leading edge portion of the blade surface of at least one of the first blade and the second blade.

### Claim 4 (depends on 1)

The wind power generation apparatus according to claim 1,
wherein the pair of electrodes is disposed on a trailing edge portion of the blade surface of at least one of the first blade and the second blade.

### Claim 5 (depends on 3)

The wind power generation apparatus according to claim 3,
wherein a plurality of the pairs of the electrodes are disposed at predetermined intervals in a direction from a blade root toward a blade tip of the blade surface.

### Claim 6 (depends on 4)

The wind power generation apparatus according to claim 4,
wherein a plurality of the pairs of the electrodes are disposed at predetermined intervals in a direction from a blade root toward a blade tip of the blade surface.

### Claim 7 (depends on 3)

The wind power generation apparatus according to claim 3,
wherein a plurality of the pairs of electrodes are disposed at predetermined intervals in a direction from a leading edge toward a trailing edge of the blade surface.

### Claim 8 (depends on 4)

The wind power generation apparatus according to claim 4,
wherein a plurality of the pairs of electrodes are disposed at predetermined intervals in a direction from a leading edge toward a trailing edge of the blade surface.

### Claim 9 (depends on 5)

The wind power generation apparatus according to claim 5,
wherein a plurality of the pairs of electrodes are disposed at predetermined intervals in a direction from a leading edge toward a trailing edge of the blade surface.

### Claim 10 (depends on 6)

The wind power generation apparatus according to claim 6,
wherein a plurality of the pairs of electrodes are disposed at predetermined intervals in a direction from a leading edge toward a trailing edge of the blade surface.