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Directory:Broadstar Wind Systems

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Like a wind surfer, the blades of the Broadstar turbine change their angle of attack as they go around the perimeter, so that they are generating torque in nearly every position.
Like a wind surfer, the blades of the Broadstar turbine change their angle of attack as they go around the perimeter, so that they are generating torque in nearly every position.

Nearly 30 percent smaller than conventional turbines, the AeroCam features breakthrough turbine technology that easily adapts to changes in wind direction and extremes of wind speed. Thus, the AeroCam can easily handle highly turbulent environments that are problematic for conventional horizontal axis wind turbines.

From 10 KW to 500 KW systems, operational from 4 to 80 MPH. Urban to Distributed and Infill locations.

Their first beta units are expected to begin deployment in November 2008. Commercial installations for buildings is expected to begin in March '09, at which point they expect to be able to produce several hundred per month. Their first target will be industrial, followed two to three years later by residential applications. One of the aspects that makes them able to compete with existing wind farms, is that it is much easier to ship and assemble their units. The largest components can be fit in 20-foot shipping containers.

The scalability and ease of installation enables them to "bring wind closer to the point of use."

Because the turbine does not spin much faster than the wind speed, bird casualties will not be as great as with the traditional horizontal axis bladed systems.

Contents

About

Official Website

Interview

How it Works

The new design is based on principles first established by the French aeronautical engineer Georges Jean Marie Darrieus (1888-1979), who invented a wind turbine capable of operating from any direction and under adverse weather conditions. Darrieus machines typically have a vertical axis, whereas the AeroCam design has a horizontal axis with multiple blades, giving it the appearance of a water wheel.

The major innovation in the design, according to BroadStar, is the ability to automatically and interactively adjust the pitch of the aerodynamic blades as the turbine rotates, thereby optimizing its performance.


Products

AeroCam I

Market: Urban
Rated Output: 10 KW at 30 mph wind speed
Diameter: 10 feet
Width: 16 feet
Type: 10 Blade Darrieus (Horizontal Axis Configuration)
Rotational Area: 502 square feet
Yaw: Actively Controlled
Gearbox: None (Direct Drive)
Generator: Permanent Magnet Alternator
Generator Output: Variable Frequency 3 Phase AC, Regulated to 240 VAC 60Hz

AeroCam II

Market: Pole Mounted Urban
Rated Output: 100 KW at 30 mph wind speed
Diameter: 24 feet
Width: 28 feet
Type: 12 Blade Darrieus (Horizontal Axis Configuration)
Rotational Area: 672 square feet
Yaw: Actively Controlled
Gearbox: None (Direct Drive)
Generator: Permanent Magnet Alternator
Generator Output: Variable Frequency 3 Phase AC, Regulated to available transmission line voltage at 60Hz

AeroCam III

Market: Distributed, Infill
Rated Output: 250 KW at 30 mph wind speed
Diameter: 28 feet
Width: 36 feet
Type: 12 Blade Darrieus (Horizontal Axis Configuration)
Rotational Area: 1350 square feet
Yaw: Actively Controlled
Gearbox: None (Direct Drive)
Generator: Permanent Magnet Alternator
Generator Output: Variable Frequency 3 Phase AC, Regulated to available transmission line voltage at 60Hz

AeroCam IV

Market: Distributed, Infill
Rated Output: 500 KW at 30 mph wind speed
Diameter: 33 feet
Width: 40 feet
Type: 12 Blade Darrieus (Horizontal Axis Configuration)
Rotational Area: 2640 square feet
Yaw: Actively Controlled
Gearbox: None (Direct Drive)
Generator: Permanent Magnet Alternator
Generator Output: Variable Frequency 3 Phase AC, regulated to available transmission line voltage at 60Hz

Videos/Photos

Costs

BroadStar’s technical achievement delivers a 250kW machine for $250,000 and is the first to break through the $1/watt cost barrier, which is unprecedented in the industry. Previously, the best that could be achieved in the U.S. was $1.38 and in Europe $2 of capital investment for every watt of power capacity installed.

Advantages

  • Markets
  • 20%+ more power than conventional fixed blade designs
  • Exceptionally wide operating range ~ 4 – 80+ MPH
  • Can be deployed where conventional turbines cannot
  • Slow rotation speed
  • May be placed in turbulent environments

The patented* design features aerodynamic blades that use the natural flow of air to create lift, and an offset cam that allows the blades to continually adjust for optimal pitch throughout a 360-degree rotation of the turbine. As a result, the AeroCam is approximately 30 percent smaller yet generates the same power when compared to conventional horizontal axis wind turbines (HAWTs).

Applications

  • “The efficient aerodynamic design lends itself to smaller wind turbines, which can operate closer to the ground or on a rooftop. They can handle a wide range of wind velocities, anywhere between 4 and 80 mph. They generate their power at lower rotational speed, so there is less noise and vibration hence less wear and tear. But most importantly the AeroCam can be manufactured at a lower cost than conventional turbines.?

One of the early adaptations will be commercial building roof edges where the wind is concentrated by the building.

Residential applications will probably be three to four years away.

Independent Testing

(As of June 9, 2008)

"We have two units operating in the field. One at West Texas A&M in Canyon, TX and the one we had at the show... which is on its way to WTA&M for field testing. We have components ordered for about 40 more units. We will deploying these units in demonstration projects throughout the country. Our plan is to work into full scale production and full scale market entry over the next 12 to 18 months." Keith Bass.

The company completed CFD analysis in around June of 2008.

Patents

Profiles

Company: Broadstar Wind Systems

Founded in 2004 by Stephen Else and Tom Stephens, BroadStar Wind Systems, with offices in Dallas, Beijing and Coventry, England, is an engineering and technology firm, comprised of experts in aerodynamics and turbine physics, which has developed its breakthrough technology solution for the efficient and affordable generation of wind power. With its scientifically proven and aerodynamically efficient AeroCam turbine, BroadStar makes wind-power generation more accessible and affordable, and delivers a measurable return on investment more quickly than competitive solutions. Some of Broadstar's engineers are former employees of Lockheed Martin.

Inventor: Tom Stephens

Inventor of the SlideWinder Internal Combustion Engine and the AeroCam Wind Turbine. Apart from his patents and many inventions, Tom has hand built many high performance vehicles and has 8 Bonnevillle land speed records, 4 of which are still standing.

Inventor: Stephen Else

Steve, a Mechanical Engineer, also has experience as a wind surfer, which knowledge has come in handy in this project for enabling the harnessing of the wind at nearly every position around the perimeter of the turbine. He has funded a number of ventures.

Coverage

  • New generation wind turbine - BroadStar's AeroCam is claimed to be the first turbine to break through the $1/watt cost barrier. It enables distributed power generation in almost any setting, including densely populated urban areas and can capture abundant surface-wind energy in wind farms. (EnergyCurrent; June 2, 2008)

Comments

See Discussion page

Contact

Steve Else - President and CEO

Hank J. Inman
Public Relations Director Americas
1323 North Stemmons
Dallas, Texas 75207
Phone: 214.468.8811
FAX: 214.468.8822
Direct: 330.571.7727

E-Mail: hjinman@broadstarwindsystems.com

See also

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