WO2013005090A4 - Wind turbine generator system having vertical lift-device rotational axis and a surface-variable airscrew - Google Patents

Abstract

The BOHG wind turbine generator systems with a vertical lift-device rotational axis and with a surface-variable airscrew are principally aimed at making such systems more reliable and inexpensive. They are characterized in that they operate efficiently even under extreme climatic conditions. They require neither wind direction systems nor towers or nacelles of any great height, irrespective of whether they are mini or mega wind turbine generator systems. The nominal dimensions ø and H (diameter and height of the rotor) of a BOHG wind turbine generator system are two variables that are dependent on the power demand and the historical average wind speed at the installation site. The BOHG wind turbine generator systems can achieve a very high coefficient of performance of 95%, and even up to 98%, thanks to the building design, which provides very innovative aspects such as: • the floating of the rotor and the generator cores, even if they weigh several tens of tonnes • the weight (mass) of the systems of the: brakes, transmissions and stators of the generators rest on the floors of the tower or of the nacelle • the operating surface of the rotor blades can independently vary such that they offer virtually no resistance to movement when they are directed against the wind direction • each rotor blade contains, in its longitudinal axis, a counterweight which contributes inter alia to the stability of the dynamic variation/fluctuations during the rotational movement.

Claims

 10

CHANGED CLAIMS

 received at the International Bureau on 1 1 April 2013

Wind turbine vertical axis of rotation with rotor supported on wheels and boat-like floating bodies with remotely controlled aerodynamically changing surface.

 It is characterized by the fact that it provides:

 a vertical rotation shaft (1):

 properly centered by the bearings (8) and (25) with axial freedom to allow the vertical displacement during the rotational movement and to stop all or part of the gear by the operation of the brake (9). On this shaft, the entirety of the gear main gear (12) and the sheet carriers (6) of the rotor blades (3) forming the rotor (27) is rigidly fixed.

A rotor (27):

 it consists of 3 rotor blades (3) able to change their aerodynamic surface cyclically and independently according to the operating position related to the wind direction (20) within the specified operating range (see Figure 9/12 "a" and "b" ). This rotor (27) converts the kinetic energy of the wind into rotational energy that transmits the shaft (1).

- a multiple system of electric generators:

 as required, consisting of one or more vertical generators (14) whose generator-rotor cores are driven by a common shaft (19)

 Assembled, the weight of the rotor cores on one

 Float (10) transmits to turn to float.

 - A rolling and swimming lane, which may be an integral part of the tower or the machine house (18 or 18a) depending on the diameter of the rotor (27).

2. Vertical shaft (1) from a BOHG wind turbine:

It is designed so that the rotor blades (3) of the rotor (27) carried by it convert the kinetic energy contained in the wind (20) and it transfers the energy to the gear transmission (13) via the main transmission gear (12).

MODIFIED SHEET (ARTICLE 19) 11

The vertical shaft (1) is characterized by providing bearings (8) and (25) with axial freedom enabling it to rotate concentrically with height adjustment with respect to the tower structure or the machine house (18) and the brake (9) , It is also characterized by being the central pillar of the rotor blades (3) and their blade carrier (6). On the sheet carriers (6) equidistant from the boat-like floating body / float (2) and the scrollworks (2a) are assembled. On the basis of the floats and the scrollworks (2a), the entire weight of the rotor (12) on the rolling and swimming lane (22) is transmitted.

Rotor (27) with remotely controlled aerodynamically changing surface.

It is characterized in that it consists of 3 rotor blades (3). The

Rotor blades (3) provide multiple swing doors (4) in their construction. The swing doors (4) are properly mounted on the support structure of the blade carrier (6) so that they open or close automatically and thus depending on the working position of the rotor blades (3) with respect to the wind direction (20) vary the surface. If necessary they will also see a limiter (24) before _"that the freedom of action of the swing doors (4) restrict to allow an adjustment of the rotational speed, without resorting to the brake (9) early.

This feature is achieved by making each swing door (4) a remotely controlled

Limiter device (24) has, by means of the flexible cable (24a) the

Limit opening range. Technically, this is the best way in terms of efficiency to control and maintain the rotational motion if the power available in the wind (Pdisp) should become dangerously higher than the extractable power (Pext) from the generators (14) and it is necessary to be in the aerodynamic state Losses to work.

 Another novel feature of the rotor (27) is that its rotor blades (3) have the scroll (2a) (see Figure 10/12). Each scroll (2a) is placed under the center of gravity of the rotor blade (3) to work in conjunction with the boat-like floating body (2) and to transfer the entire weight of the components of the rotor (27) to the rolling and swimming lane (22). transferred to. The scrollworks (2a) and the boat-like floating bodies (2) also serve as vibration and vertical wave motion dampers.

The components (2) and (2a) give the rotor (27) extraordinary

GEÄN DERTES BLATT (ARTI KEL 1 9) 12

Characteristics in the mechanical strength, resulting in the construction of small

 Wind turbines for domestic use or groups of private households,

 Factories, shops, and the construction of large wind turbines or wind farms to feed into the national grid provides good prospects. All of these types of wind turbines do not have towers or nacelles (18) that are too high, as these rotors (27) can operate successfully even in the threshold of the turbulence zones of the wind (20).

 4. A multiple system of generators (14) vertical and with multi-pole rings. They are properly assembled so that the weight of the stators rests on the floors of the tower or machine house (18 and 18a) and the weight of the generator-rotor cores moved by the common shaft (19) on a buoyant body (FIG. 10) rest. The buoyancy body (10) provides a hydrodynamic brake which is capable of controlling the rotational parameters in the

 To hold use area.

 The above novel aspects allow the use of high capacity generators and low energy losses, giving a high utilization factor to BOHG wind turbines (vertical axis rotary wind turbines with a rotor with remote controlled aerodynamically changing surface supported on wheels and boat-like floating bodies).

5. Vertical wave (19).

 The BOHG wind turbines (vertical axis wind turbines with rotor with remote-controlled aerodynamically changing surface supported on wheels and boat-like floating bodies) have a shaft (19).

 It is designed to transmit the rotational movement from the transmission (13) to the system of generators (14). The shaft (19) is also characterized in that it transmits the weight of the rotors of the generators on a buoyancy body (10) and to store them floating and rotating.

MODIFIED SHEET (ARTICLE 19)

 13

DECLARATION REFERRED TO IN ARTICLE 19 (1)

- the claims (1-5) have been changed.

 - the changes in the claims will appear in the corresponding replacement sheets as a complete series, which will replace all originally filed claims.

- The changes were made with the aim of eliminating the mistakes made in the

 Report by the International Searching Authority in relation to the requirement of unity of invention (as defined in Rule 13.1).

 - Due to the changes in the claims, it was necessary to change the description, the total number of drawings and the name of the invention also. The corresponding

 Replacement sheets will also appear in a full series and become the

 replace corresponding sheets of the originally filed application.

 - the changes to the claims, the description and the total number

 The drawings do not go beyond the disclosure of the international application at the time of filing, but they help to clarify the meaning involved in the international claims as originally filed.

- on the basis of the previous declarations and the provisions of the

 PCT - Rule 66.6 and Article 33.6 I request in the

 Respectfully, the International Preliminary Examining Authority accepted the enclosed Compact Disk / DVD.

 The Compact Disk is intended to help explain certain terms that also contributed to the concepts and terms that were made for this application for International Patent. (The output of the so-called compact disk has not been made professionally and therefore image errors occur, yet clearly the most important details of a BOHG wind turbine, which was built as a prototype on a reduced scale, are shown.