WO2013116376A2

WO2013116376A2 - Wind hawk turbine

Info

Publication number: WO2013116376A2
Application number: PCT/US2013/023911
Authority: WO
Inventors: Shamel A. Bersiek
Original assignee: Bersiek Shamel A
Priority date: 2012-01-30
Filing date: 2013-01-30
Publication date: 2013-08-08
Also published as: WO2013116376A3

Abstract

A wind jet turbine with fan blades located on an inner and outer surface of a cylinder allowing wind or liquid to pass through the inner and outer blades and results in increased power generation efficiency, where the cylinder may be formed by "surfboards."

Description

WIND HAWK TURBINE

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to United States Provisional Patent Application, Serial Number 61/592,206, titled WIND HAWK TURBINE, filed on January 30, 2012 which is incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention.

[0002] The present invention generally relates to a power generation device/generator and more specifically relates to power generating devices with rotational blades.

2. Related Art.

[0003] Wind turbines are traditionally designed to capture the wind via rotating blades that turn a generator unit located at the center or hub of the blades. The power produced by this type of generator is proportional to the wind velocity, swept area, and air density (Power=0.5 x Swept Area x Air Density x Velocity ). Unfortunately, traditional wind turbines are expensive, inefficient and occupy a considerable amount of space. Traditionally, wind power devices have utilized many different technologies for blades, gearboxes, and electrical generators, but still produce a limited amount of power due to the fact that all the designs are basically similar and follow the same generator principles, namely traditional three bladed propeller windmill designs.

[0004] Several companies make three bladed propeller windmills or wind turbines. The three bladed wind turbines are designed to capture the wind via the three rotating blades that turn a generator unit located in the center of the blades. Thus, the three blade wind turbines produce electrical power by rotational torque that is created by the surface area of the blades. The most effective part of the blades is the portion that travels through the greatest volume of air. That part is found at the tips of the blades. Unfortunately the three-bladed turbine blade tips surface area calculates to be less than 10% of the total surface area.

[0005] The rotating blades are typically connected to a generator that generates direct current that then employs an inverter resulting in alternating current. The generators used in rotating blade wind generators, thus rely on fixed winding inductance. Fixed windings used in generators limit the efficiency of energy generation and often require additional steps and hardware to generate alternating currents.

[0006] It would be useful to produce power using rotating blades in a small footprint while increasing the effective part of the blades in order to produce two to five times the power as traditional devices while occupying the same space as the traditional three bladed wind turbines. It would be additionally useful to generate electrical power using variable inductance windings (VIW).

SUMMARY

[0007] The present blade design is unique with the total area of the blades being located on the outside 50% of the assembly while eliminating the inner 50%, thus reducing the total weight of the blades. By eliminating the inner 50% of the blades, this invention introduces a "ported" aerodynamic system which allows the inner 50% of the wind to pass though the first blades of the wind jet turbine without interruption and the outer 50% to be angularly redirected. The blade shape creates a Venturi effect that causes the wind speed to increase while passing through the ported center section of the wind jet turbine. The combination of the increased inner wind speed and the redirected outer wind speed of the air leaving the turbine may result in an unchanged wind speed at the tail end of the wind jet turbine. Betz Law was created in 1919 and published in 1926 and is used to calculate the power output of a wind turbine by the differential wind speed entering and leaving the wind turbine or blades. Betz Law defines .59% as being the limit of the amount of power that may be derived from an air mass passing through the swept diameter of a rotor or blade.

[0008] Thus, an increase in power production is achieved when the wind speed is significantly unchanged between entering and leaving the wind jet turbine. Additionally, the wind jet turbine eliminates the aerodynamic bubble that typically forms over the wind turbines. This approach also eliminates Betz Law from applying to the entire wind jet turbine. Rather Betz law only applies to each blade individually in the wind j t turbine.

[0009] The wind jet turbine may be designed with blades contained within a housing or on "surf boards" that maximizes wind capturing and effective striking area. The electric generator may be designed to reduce losses and increase efficiency. The power generation may be achieved with electrical generators utilizing the principals of magnetics with variable inductance windings (VIW).

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. In the figures, like reference numerals designate corresponding parts throughout the different views.

[0011] Fig. 1 depicts Wind Hawk Turbines being supported by a common pole in accordance with an example implementation. [0012] FIG. 2 depicts a closer view of the Wind Hawk Turbine of FIG. 1 in accordance with an example implementation.

[0013] FIG. 3 depicts the rear of the Wind Hawk Turbine of FIG. 1 in accordance with an example implementation.

[0014] FIG. 4 depicts a winding ring coupled to the Wind Hawk Turbine and is turned with the rotating ring.

[0015] FIG. 5 is a drawing of a Wind Hawk Turbine with "surfboards" 5 in accordance with an example implementation.

[0016] FIG. 6 is a drawing of a front view of "surf board" of FIG. 5 in accordance with an example implementation.

[0017] FIG. 7 is a side view of the "surfboard" of FIG. 5 in accordance with an example

implementation.

DETAILED DESCRIPTION

[0018] Unlike the known approaches previously discussed, a wind turbine as disclosed herein overcomes the above limitations. For example, one of the possible implementations of this wind turbine approach is in wind farms and grid tie application and to generate large scale power that ranges from a few Kilowatts to several Megawatts. The physical size for the grid application of the wind turbine could be from a few feet to hundreds of feet. Another example is to generate power for residential or commercial building and provide from 1 Kilowatt to a few Megawatts of power. The physical size of residential and commercial wind turbines using the described approach may be from a few feet such as one foot to several feet such as 20 feet. Another example of this wind turbine approach is to generate power for vehicles, sea vessels, planes and/or any moving vehicle and provide power preferably from a few watts to Kilowatt range. The physical size of a vehicle wind turbine could be from a few inches to a few feet. Nevertheless, this invention is not necessarily limited to wind but to any current or mass that can produce a force to rotate blades (such as water). The wind turbine as described herein, may be attached to an engine and may produce power such as a backup power supply for a building.

[0019] The power generated may be used to tie in to the electrical grid, power a building, or power an electric or hybrid vehicle. This wind turbine approach introduces the first in the world controlled variable inductance winding (VIW) generator design that may be used in many applications such as for power generation or motor.

[0020] The wind turbines are designed to capture the wind via blades which turn a generator unit located in the center of the blades. The power produced by the generator is proportional to the wind velocity, swept area, air density (Power=0.5 x Swept Area x Air Density x Velocity cubed). Inefficiency factors and Betz Law then account for a reduction in the total power produced by wind turbines. It is desirable to produce power from wind in a small footprint that can produce two to five times the power occupying the same space as the present conventional wind turbines. The wind turbine described herein achieves high power production by combining an efficient blade with high drag and lift forces at varying wind speeds, an aerodynamic assembly that creates wind direction correction with low and high pressure around the blades, and a variable inductance generator that electronically matches the electromagnetic field (EMF) strength and magnet rounds per minute (RPM) to extract all the power available at all wind speeds.

[0021] Betz Law was created in 1919 and published in 1926. It defined .59% as being the limit of the amount of power that could be derived from an air mass passing through a swept diameter of a rotor. The new wind turbine approach integrates and uses the .59% limit imposed by Betz Law in a new way to create higher total output from a collection of multiple blades working in combination on a single axle and designing the total turbine to be a ported system allowing a significant amount of wind to travel through the assembly unaffected. The current approach also enhances the relative distance between the blades and eliminates the inside 20-50% of the low torque part of the blades replacing them with thin spokes that allow significant air to pass through the center and the sides so an aerodynamic bubble does not form over the wind turbine which restricts Betz Law from applying to the entire wind turbine, but applying to individual wings. Each wing has a .59% Betz limit.

[0022] The present approach satisfies many needed power demands at high efficiency, less cost, less physical space, more power delivery, flexible power output, easier to transport and simple to install. The blades and the assembly of the present approach are designed to adapt to differing wind speeds. The outside blades are placed between two rotating rings/cylinders and each cylinder's tail end is designed with a wave or a zig-zag tail end to regulate the existing wind and reduce tip drag.

[0023] In FIG. 1 100, two Wind Hawk Turbines 102 and 104 are depicted being supported by a common pole 106 are depicted in accordance with an example implementation. Each of the Wind Hawk Turbines 102 andl04 have a rotating ring 108 and 110 that have a plurality of blades 112 connected to the outer portion of the ring and a plurality of blades 114 connected to the inner portion of the rings.

[0024] Turning to FIG. 2, a closer view 200 of the Wind Hawk Turbine 102 of FIG. 1 is depicted in accordance with an example implementation. The rotating ring 108 has the plurality of blades 112 on the outside of the rotating ring 108 and plurality of blades 114 connected to the inside of the rotating ring 108. The housing 202 may enclose a plurality of magnets. The magnets may be either permanent magnets or electromagnet depending on the implementation and size constraints. In FIG. 3, the rear of the Wind Hawk Turbine 102 of FIG. 1 is depicted 300 in accordance with an example implementation. The rotating ring 108 is depicted with both the inner and outer plurality of blades 114 and 112. The rear of the rotating ring 108 has a zig-zag shape that further aids in air flow through the Wind Hawk Turbine 102. In other approaches, the rotating rings/cylinders may be a "surfboard" as described later in this application. Turning to FIG. 4, a winding ring 402 is depicted as being coupled to the Wind Hawk Turbine 102 and is turned with the rotating ring 108. The winding ring 402 is located within the housing 202 and current is induced into the rotating winding of the winding ring 402 by magnets located in the housing 202.

[0025] The present invention utilizes a blade design approach that works by drag force in low speeds and lift force in high speeds (drag and lift), low and high pressure areas by utilizing an outside shroud aerodynamic body design and a variable blade pitch angle. The blades are designed to maximize the drag and lift relation in order to operate at the highest efficiency at any wind speed. The blades may be equipped with springs and a shaft dividing the blade into two sections (a main body and a tail end body) that can vary the pitch via a spring mechanism. The springs may be selected to open the back portion of the blades as the wind speed picks up, for example from 85 to 5 degrees angle change. The blade front end entering the wind is designed with an airfoil and the tail end with a drag. The two-section blade increases the drag force from the wind in low speed and increases the rotational speed at high wind speeds, thus the lift force. The blade design and spacing may be selected to achieve the best tip speed ratio (TSR) for the drag portion of the blades but at the same time maximize the output torque at high rotational speed by utilizing the resulting lift torque to compensate for the TSR change at high speeds. The blade design allows the total assembly to utilize several blade assemblies back to back rotating in the same direction or counter rotating. For example, first blade system rotating clockwise and the second blade system rotating counter clockwise. [0026] The present wind turbine approach is designed with housing and blades that are assembled to maximize wind capturing and effective striking area. The electric generator is designed to reduce losses and increase efficiency. The power generation in the generator section may be based upon a generating power in a rotating machine utilizing the principals of magnets with VIW. The application of the VIW generator may be used in any industry from cars to machines to appliances to many other applications where motors or generators are needed.

[0027] In addition, the blade system may also be advantageous to sea vessels acting as propeller thus increasing the fuel efficiency of the vessel. The blade system may be easily applied as a fan assembly in blowers, air conditioning system or any air moving device. The turbine VIW may be attached to an engine and can produce power such as backup power for a building.

[0028] The described turbine approach is also designed to increase the wind speed and increase the air pressure inside the embodiment. The blades also create pressure differential between the air within and entering the turbine body and the outside passing wind behind the blades and assembly. This pressure differential will increase the power of the wind when striking the blades in accordance to the formula (Power=0.5 x Swept Area x Air Density x Velocity cubed).

[0029] The interior section of this turbine embodiment is designed to capture the wind through a large opening area and direct the wind through the interior of a decreased diameter area. The decreasing diameter and area in combination with the location of the shroud of the interior section will result in wind speed and pressure increase on the blades and reduced pressure behind the assembly that produces more power. The design integrates and uses the .59% limit imposed by Betz Law in a new way to create higher total output from a collection of multiple blades working in combination on a single axle and designing the total turbine to be a ported system allowing a significant amount of wind to travel through the center of the assembly unaffected. The turbine also enhances the relative distance between the blades and eliminates the inside 20-50% of the low torque part of the blades replacing them with thin spokes that allow significant air to pass through the center and the sides so an aerodynamic bubble does not form over the wind turbine which restricts Betz Law from applying to the entire wind turbine but applying to individual wings. Each wing has a .59% Betz Law limit.

[0030] The shroud exterior section, for example, the housing 202 of FIG. 2, is designed to increase the distance of travel of the wind around the exterior side of the shroud of turbine to create a wind speed differential between the interior and the exterior of the shroud embodiment which creates a low pressure area at the tail end of the turbine thus assisting in increasing the speed of the wind traveling through the interior section. The increased pressure and wind speed in the interior compared to the lower pressure on the exterior and tail end body results in more stability of the total structure of the Wind Hawk Turbine 102.

[0031] The present approach provides maximum power relative to the amount of wind velocity occupying a small footprint. The design of the wind striking area of the blades in combination with the counter rotating blades increases the wind capturing and creates more stability within the turbine. The present example assembly may also be designed to turn towards the direction of the wind to capture the maximum amount of wind. The variable direction mechanism may be for example, electronic/electrical with wind sensors and/or preferably with a wind rudder. Several turbine assemblies of this invention may be placed in close proximity of each other such as several on one supporting structure or pole.

[0032] The blades of the present example approach may be designed to adapt to any wind speed and preferably are made of carbon fiber, fiberglass, plastic byproduct and/or aluminum. The turbine achieves high power production by combining an efficient blade with high drag and left forces at a variety of wind speeds, and advanced aerodynamic assembly that creates wind direction correction and creates low and high pressure around the blades in the desired locations. The blades are designed to maximize the drag and lift relation in order to operate at the highest efficiency at any wind speed. The blades may be equipped with springs and a shaft dividing the blade into two sections, a main body and a tail end body that can vary the pitch via a spring mechanism. The spring mechanism is adjusted to open the back potion of the blades as the wind speed picks up, for example from 85 to 5 degree angle change. The blade front end entering the wind is designed with an airfoil and the tail end with a drag. The two-section blade increases the drag force from the wind in low speed and increases the rotational speed at high wind speeds, thus the left force. The blade design and spacing is calculated to achieve the best Tip Speed Ratio (TSR) for the drag portion of the blades, but at the same time maximize the output torque at high rotational speed by utilizing the resulting left torque to compensate for the TSR change at high speeds. In this invention the blade design allows the total assembly to utilize several blade assemblies back to back rotating in the same direction or counter rotating, for example, first blade rotating clockwise and the second blade system counter clockwise.

[0033] This application introduces a controlled variable inductance winding (VIW) generator design that may be used in many applications such as for power generation or motor. Also introduced in this application is an improved blade design over what has previously been disclosed.

[0034] The VIW generator consists of several windings/coils; each winding is electrically connected to a switching (Power) circuit and electronic (Control) circuits such as a microprocessor or microcontroller that controls the switching power circuit. The control circuit monitors the generator output and electrical production and switches the coils in a parallel and series configuration to achieve the optimum efficiency and power output at any rpm and/or torque. By changing the winding configuration in series and parallel, the configuration changes result in EMF and apparent rpm changes even though the rotation of the generator may be steady.

[0035] For example if the generator consists of 24 windings and 18 magnets, then each winding will experience 18 EMF exposures in one round. When all winding are arranged in two winding groupings in series, the total winding become (24/2) 12 winding, so the newly arranged 12 windings will experience 18 EMF exposures. This process makes the generator output a variable voltage and frequency generator. This is beneficial especially in the wind turbine application as the RPM variation from low to high can be controlled internally by the generator to keep the output steady and at the best possible efficiency.

[0036] The power windings and magnets may be wired to a control circuit within the same assembly to produce Alternation (AC) with variable frequency and electromagnetic field (EMF) while rotating at a constant rotational speed. The VIW generator electronically adjusts the EMF and frequency introduced to the windings at any rotational speed to match the available rotational torque in order to produce power at the available rotational torque at any speed.

[0037] The present approach is designed with main permanent magnets and/or induced magnets, preferably located at the tip of the blades or on the center cylinder of the assembly. The main power coils are preferably located on the outside portion of the body/shroud of the turbine or on a support assembly connected to the non-rotating body of the turbine.

[0038] The VIW generator may utilize permanent magnets or induced magnets. The power to the induced magnetics may be another generator or power source, preferably located within the housing of the turbine. In an induced magnet setup approach, the current to the induced magnets may be controlled electronically to increase or decrease the current delivery to the induced magnet, thus increasing or decreasing the magnetic strength that increases or decreases the power output of the turbine. The increase and decrease of the current is preferably designed to be relative to the wind speed or velocity and/or the RPM of the turning blades. As for the permanent magnet design, the flux strength may be controlled mechanically by an increase and decrease of the distance of the permanent magnets to the main power coils and or other magnets within the VIW generator. This variable magnetization design allows the turbine to harness the smallest amount of wind and convert it to power. An example of a mechanical approach for an increase and decrease of distance may be by employing springs attached to the magnets. As the RPM's increase, the magnets attached to the springs will move closer to the windings. As the RPM's decrease, the spring will pull the magnets back to a rest state increasing the distance to the windings.

[0039] Two types of electrical generating approaches are disclosed. The first is introduction of variable magnetic fields and the second is variable inductance winding generators, or the generator section of the turbine may be of a traditional type such as DC, induction, permanent magnet or synchronous generator. The generator section may also be a Variable Inductance Winding generator (VIW) as opposed to a pulse magnetic controlled generator (PMCG).

[0040] The VIW generator may be designed with multiple poles of windings and permanent magnets preferably in a 4:3 or 3:4 ratio. For example the three phase models may have stator winding in multiples of 6 and the rotor permanent magnets in multiples of 8, for example, 48 rotor permanent magnets and 36 stator windings. The permanent magnets are preferably arranged in a U- shape or a T-shape configuration with two magnets facing each other or perpendicular to each other. The windings pass through the U-shape permanent magnets or one of the perpendicular magnets.

[0041] The PMCG generator of the wind turbine utilizes an exciter and a rotor. The rotor is equipped with permanent magnets or electromagnets preferably located within the generator section of the turbine of the wind turbine and are attached to the rotating blades. The main stationary stator may be comprised of power coils and windings that are preferably located on the outside portion of the power generation section.

[0042] A magnetizing or exciter generator is preferably located within the generator section of the Wind Hawk Turbine. The exciter generator may be designed to deliver a constant power that is fed to a control/power circuit that increases or decreases the current delivery to the rotor windings/ electromagnets .

[0043] The current may be delivered to the electromagnets in a pulsating manner, thus increasing or decreasing the magnetic strength in a repetitive form. This configuration regulates the voltage, power and frequency of the total output power of the wind turbine. The magnetization to the electromagnets may also be controlled by the amplitude and/or frequency of the pulsating current which is preferably relative to the wind speed, torque and/or the rounds per minute (RPM) of the turning blades. This variable excitation design allows the wind turbine to harness the smallest amount of wind and convert it to power.

[0044] The two preferred types of power generators are the Variable Inductance Winding Permanent Magnet Generator (VIW) and/or the Pulse Magnetic Controlled Generator (PMCG). Both generator designs produce a variable power output and a controlled magnetic wave. The VIW and the PMCG produce a clean output waveform that can maximize the amount of power output relative to any wind speed, with the least amount of loss, and the smallest physical space. The PMCG generator can produce any output frequency such as 60 Hz or 50 Hz independent of the rotational speed to the rotor.

[0045] The Variable Inductance Winding Permanent Magnet Generator (VIW) may be comprised of a rotor with multiple poles, permanent magnets (PM) and stator with multiple poles winding structure. The permanent and winding poles are preferably arranged in a 4:3 or 3:4 ratio. For example, the three phase models may have windings in multiples of 6 and the permanent magnets in multiples of 8, such as in a 48 permanent magnets and 36 windings. The permanent magnets may be preferably arranged in a U-shape configuration with two magnets facing each other. The windings pass through the U-shape permanent magnets. In other words one VIW generator is comprised of multiple of small generators all within one assembly. For example, in a VIW three phase generator that has a stator with 36 winding poles and a rotor with 48 PM poles, there is a total of 6 small generators. Each small generator has three phases A, B, and C and each phase is comprised of two windings for a total of 6 windings. The multiple small generators will be exposed to the rotor's 48 permanent magnet poles. Each small generator produces a full waveform of 360 degrees in all three phases in a 12.5% of one full rotor rotation. This calculates to each small generator exposed to 8 times the RPM in one full rotor rotation.

[0046] The significance of the arrangement is the role that the RPM plays. In rotating machines, the power formula is (Power in KW = (Torque x 2 x 3.14 x RPM)/60,000), so the higher the RPM, the higher the power. Increasing the RPM on each small generator by 8 times increases the power production of each small generator by 8 times. The output power of all small generators within one VIW is synchronized and can be coupled together selectively to produce the total power output of the VIW. The coupling of the small generators within the VIW generator may be in steps and can be relative to the amount of wind and torque produced by the blades. In other words, the VIW generator may utilize one of the small generators at a low wind speed and low torque and a couple more small generators to the output bus as the wind speed and torque increases. The addition of each small generator output to the VIW main output bus is preferably achieved mechanically, electro- mechanically, or electronically. The output of each small generator within the VIW generator may be coupled on the AC side or may be rectified then coupled after rectification. Additional controlled functions of the VIW generator may be the configuration of the windings. The windings may be in series or in parallel. Thus, the inductance value of the windings and the RPM affect are changed. For example two winding that are positioned for phase A may be in parallel, thus reducing the inductance to half or may be in series, thus doubling the inductance. This controlled switching is extremely advantages to harnessing every watt available when the wind speed and the torque from the blades changes from low to high wind speed.

[0047] In other example implementations, a turbine assembly may employ "surf boards" rather than a solid ring to make an inner and outer area. In FIG. 5, a drawing 500 of a Wind Hawk Turbine 502 with "surf boards" 504-512 is depicted in accordance with an example implementation. Each "surf board" 504-512 has an inner blade 518 and outer blade 520 (using "surf board" 504 as an example). As the blades of the turbine rotate, the "surf boards" define an inner 514 and outer 516 areas. The defined inner and outer areas 514 and 516 function as if a solid ring was present. Turning to FIG. 6, a drawing of a front view 600 of "surf board" 504 is depicted. The shape of the inner blade 518 is visible along with the shape of the outer blade 520. In FIG. 7, a side view 700 of the "surf board" 504 is shown. The inner blade 518 and outer blade 520 shapes are visible. The shapes of the inner and outer blade 518 and 520 assist with maximizing the drag and lift of the blades. Thus, a savings in material and labor is achieved because sub-assemblies of the blades with "surf boards" may be employed.

[0048] The foregoing description of an implementation has been presented for purposes of illustration and description. It is not exhaustive and does not limit the claimed inventions to the precise form disclosed. Modifications and variations are possible in light of the above description or may be acquired from practicing the invention. The claims and their equivalents define the scope of the invention.

Claims

CLAIMS What is claimed is:

1. A wind turbine, comprising: a housing; a rotating ring having an inner side and an outer side; a plurality of outer blades connected to the outer side of the rotating ring; a plurality of inner blades connected to the inner side of the rotating ring; and a means for generating current coupled to the rotating ring.

2. The wind turbine of claim 1 , where each of the plurality of inner blades is shorter than each of the plurality of outer blades.

3. The wind turbine of claim 1, where the means for generating current is a pulse magnetic controlled generator.

4. The wind turbine of claim 1 , where the means for generating current is a variable

inductance winding generator.

5. The wind turbme of claim 4, where multiple poles of windings and permanent magnets are in a 4:3 ratio.

6. The wind turbine of claim 4, where the multiple poles of windings and permanent magnets are in a 3:4 ratio.

7. The wind turbine of claim 1 , further includes an exciter generator to power

electromagnets.

8. The wind turbine of claim 1, where the outer blades are shaped to increase drag force at low rotations and additionally increase lift force at high rotations of the outer blades.

9. The wind turbine of claim 8, where each of the outer blades has a tail end that increases drag.

10. The wind turbine of claim 1, where the inner blades are shaped to increase drag force at low rotations and additionally increase lift force at high rotations of the outer blades.

11. The wind turbine of claim 10, where each of the inner blades has a tail end that increases drag.

12. The wind turbine of claim 1 , where the rotating ring is formed by a plurality of surf

board.

13. The wind turbine of claim 12, where each of the surfboards has the outer blade attached to an outer side of the surfboard.

14. The wind turbine of claim 12, where each of the surface boards has the inner blade

attached to an inner side of the surfboard.

15. The wind turbine of claim 1 , where a housing surrounds the rotating ring, the plurality of inner blades, and the plurality of outer blades.

16. A wind turbine, comprising: a hub; a rotating plurality of surfboards, each having an inner side and an outer side, where each of the surfboards are connected to the hub; a plurality of outer blades each connected to the outer side of each of the plurality of surf boards; a plurality of inner blades each connected to the inner side of each of the plurality of surf boards; and a means for generating current coupled to the surfboards, where current is generated by the turning of the surfboards.

17. The wind turbine of claim 1 , where the means for generating current is a pulse magnetic controlled generator.

18. The wind turbine of claim 1, where the means for generating current is a variable

inductance winding generator.

19. The wind turbine of claim 18, where multiple poles of windings and permanent magnets of the variable inductance winding generator are in a 4:3 ratio.

20. The wind turbine of claim 4, where the multiple poles of windings and permanent

magnets of the variable inductance winding generator are in a 3:4 ratio.