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Lakota 900W 24V Wind Turbine Land No Controller

Lakota 900W 24V Wind Turbine Land No Controller
Lakota 900W 24V Wind Turbine Land No Controller
Item code Model number Volts Watts
AERLAK-24V LAKOTA 900-24V 24V 900W
NOTE: This turbine works for both 24V and 48V

AeromaxAeromax's Lakota™ Wind Turbine
with AEROMAG Carbon Fiber Blades

 

Lakota Wind Turbine in Flight!Lightweight and Powerful!
This enhanced upward furling wind turbine with Aeromag's carbon fiber blades deliversmore power in lower wind speeds!

Alt-E Store Comment:
Many of our customers have asked:
"How does this compare to the Southwest Wind Power Whisper H40 or H80?"

In terms of kilowatt-hours produced per month the Lakota wind turbine is similiar to the H80, however it's is similiar to the lower rated H40. And unlike either the H40 or the H80, due to its advanced carbon fiber blades and robust design the Lakota will keep on producing more and more power at higher windspeeds (checkout the graphs below). Whereas with most wind turbines, once you go over their rated air speed their power production drops dramatically. You'll find this wind turbine responds more quickly to sudden strong gusts of winds, maximizing the actual power (watt-hours) you'll produce. We think that this turbine is probably one of the best mixes of quality, robust design and value available today.

Plus, unlike the H40 & H80, these turbines don't take 6-8 weeks to ship. We carry most versions in our own stock (call us for availability), and in the worst case, out of stock voltages can be shipped out to you in 2 to 3 weeks.

Available in: 12V, 24V and 48V

Features

  • Rated 900 Watts Power Output at 28.8 mph
  • Peak 1300 Watts Power Output at 38+ mph
  • Start-up wind speed at 6 mph
  • Charges 1 Ampere (12 volt turbine) at 9 mph
  • Nominal 12, 24 & 48 Volt available
  • Can be optimized Low, Medium or High Average Wind Speeds (tell us in advance what you want)
  • Lightweight 34 lbs. (17kg)
  • Produces very little noise
  • Aluminum body with all stainless steel hardware
  • Rare Earth Neodymium Iron Boron Permanent Magnets
  • USCG approved tinned Copper wire for marine use
  • Self-governing Rotor Design
  • Permanently Sealed Unit
  • Special Marine Coating available (additional cost)

Blades

  • Precision, computer designed low inertia Blades
  • "Stealth-Acoustic" blade technology is very quiet and invisible to radar and no TV/radio interference
  • Helicopter leading edge tape on blades
  • 7 times stiffer than steel, means no flutter, low noise, more energy
  • Smoother and far quieter than wood, plastic, injection molded or fiberglass reinforced blades
  • Can be optimized for Low or High Wind environments
  • Upward furling design does not hide from the wind
  • Produces full power even beyond 60 mph winds!
  • Extended warranty up to 7 years available

Lakota's Advanced Features

  • Aerospace grade, advanced technology, uni-directional Carbon Fiber Blades
  • Helicopter leading edge tape on each blade
  • Smoother and far quieter than wood, plastic, injection molded or fiberglass reinforced blades
  • Unprecedented 3 year warranty on the blades
  • Extended warranty up to 10 years available on the blades
  • Precision, computer designed aircraft quality rotor
  • Stainless steel hub plates

Specifications

  • Power Output for Sea Level Conditions:
    • 300 Watt nominal at 16.5 mph
    • 500 Watt nominal at 21.5 mph
    • 900 Watt nominal at 28.8 mph
    • Peak Power maintained above 1200-1500 Watts at higher wind speeds
    • Users have reported over 1500 Watts at 100 Amps
  • Nominal 12, 24, 48 Volt
  • Lightweight 35lbs. (<16kg)
  • Rotor Diameter: 82.3 in (2.090 m)
  • Swept Area: 36.9 ft2 (3.43 m2)
  • Start-up Wind Speed: 6 mph (2.7 m/s)
  • Alternator: 3 Phase AC Brushless Permanent Magnet

Turbine Performance

Lakota Monthly Energy Production
Lakota Power Profile
Full Flight Envelop test data

Monthly Power Production
Cautionary Note: Comparison of test curves and power data is highly dependent on location, tower height, turbulence, obstacles, humidity and other factors. Please consult an expert before drawing conclusions or accepting manufacturer claims. These charts shows the superior performance of the Lakota blade technology (see also Blades technology below). With a smaller diameter, light weight and very stiff blade technology and much lighter system Lakota out performs higher rated competitors in medium to high wind conditions. That's because Lakota does not hide from the wind but maintains it optimum performance throughout its entire flight envelop. Even above 40-50mph it continues to produce peak power in excess of 1500W and some users report up to 1800W at almost 100 amps without damage to either electrical or mechanical components. Rain, snow, sleet or storms the Lakota SC turbine is made to take it all and continue to put out the power.

In addition, since the blades are very light they can take advantage of wind gusts that heavier blades can't because their inertia is too high to react before the gust is over. Over time this amounts to considerable extra energy extracted from the same column of air.

Wind Turbine Performance in Different Regions

Wind Class
1
2
3
4
5
6
7
Average Wind Speed at Anemometer Hub Height
10.1
13.4
15.0
16.2
17.3
18.8
22.3
Average Wind Speed at Anemometer Hub Height
4.50
6.00
6.70
7.25
7.75
8.40
9.95
Monthly anticipated Energy Output in
99
197
250
290
324
364
432
Yearly anticipated Energy Output in
1147
2367
2995
3478
3890
4370
5180
Percent Operating Time
65.4%
78.8%
82.5%
84.6%
86.0%
87.1%
86.7%
This model uses a mathematical idealization of the wind speed probability. The validity of this assumption is reduced as the time period under consideration (ie, the wind speed averaging period) is reduced. This model is best used with annual or monthly average wind speeds. Use of this model with daily or hourly average wind speed data is not recommended because the wind will not follow a Weibull distribution over short periods. Your performance may vary. (Assumptions: Weibull Factor = 2.00, Wind Shear Exponent = 0.18, Turbulence Factor = 10 %, Site Altitude = 1000 m / 3300 ft, Anemometer Height = 10 m / 33 ft, Tower Height = 14 m / 47 ft)

Don't know what the Wind Class is for your location? Click here the US Wind Resource on our Alt-E University to find out what your wind class is.


TURBINE TECHNOLOGY

Power Generation:

The Lakota turbine uses an 8 pole, 36 slot, 3 phase alternator with 10 winding leads. This allows 4 separate field adjustable settings to be made that will optimize it's output and match it's performance to low, medium, high or severe wind regimes.

The Lakota generator has a high power to weight ratio. It uses a single stator, rare-earth neodymium iron boron permanent magnet in a cast aluminum casing with stainless steel fittings. The upward furling mechanism ensures the Lakota will not "Hide" from high winds but continue to put out up to two times it's rated power without damage to its electrical or mechanical components. It's precision components are designed for long life. We recommend at least a 60-100 amp DC circuit breaker be used with all installations.

Lakota turbines are sealed units and require only annual inspection. No lubrication or overhaul maintenance schedule is required during the life of the generator. (approx. 15-20 years). Marine or desert installations may need more attention to surface corrosion and leading-edge tape on the blades. Helicopter grade leading-edge tape is replaceable if abraded by fine debris or sand. Lakota field units have survived 120mph storms while other units nearby have self-distructed. Vehicle mounted test units continue to output maximum power at over 70mph with no damaging effects.

Blades:

Lakota's aerospace grade uni-directional carbon fiber blades are not to be confused with carbon matrix or carbon reinforced plastic blades. Unlike plastic with powdered carbon blades that bend and flutter, the carbon fibers in the Lakota blades are 7 times stiffer than common steel, and carry the loads from tip to root. This allows the Lakota to harness far more energy annually than comparable similar wind turbine generators. In addition, the increased output substantially lowers the overall cost of energy despite a slightly higher initial purchase .

Coatings:

The Lakota SC has a special UV stabilized titanium dioxide, linear polyurethane aircraft coating that protect the unit from rain, snow, ice, sun, sand and dust, wind and corrosion.

Aeromag's Blade Technology

AEROMAG's aerospace grade uni-directional carbon fiber blades are not to be confused with carbon matrix or carbon reinforced plastic blades. Unlike plastic with powdered carbon blades that bend and flutter, the carbon fibers in the AEROMAG blade are 7 times stiffer than common steel, and carry the loads from tip to root. This allows the AEROMAG LAKOTA to harness far more energy annually than comparable similar wind turbine generators. In addition, the increased output substantially lowers the overall cost of energy despite a slightly higher initial purchase .

Regulation and Control

The electronics perform several functions to ensure maximum output and safety for the user. The regulation control maintain a load on the alternator at all times preventing turbine overspeed, regardless of the charge condition of the battery. You may select among a variety of Regulation and Control Device from cost effective Rectifier Module to advanced Manual or Automated Load Divergence Center to professional Wind Turbine Flight and Battery Charge Controller. If your application requires a quiet and powerful wind turbine and is in a place with low as well as potentially high winds, then consider the AEROMAG LAKOTA™ Stealth Acoustic from AEROMAX.

LDR controller with air heating dump loads
An LDR wind machine controller pulsing excess energy to two air heating dump loads.

Dump Load Configuration

A dump load is a critical part of the system, without DL the turbine should not be up and flying. A Diversion Load is an automated safeguard system that enables expanded wind turbine performance while preventing overcharge at the battery. Small wind turbines are commonly misunderstood when it comes to dump-loads. The most common misconception regarding DL is the myth of wasting energy. Dump loads are infrequent, yet their existence is critical to reliable performance of the wind system.

We highly recommend that you use a diversion dump load in conjunction with the Lakota. We now recommend you use the Commander Controller. However, previously, you could do this in one of the two ways shown below:

1) Use a voltage controlled switch set for Active High (AH) operation from Solar Converters (do a search on "VCS" to find our voltage controlled switches). Connect the voltage controlled switch to one of our high ampere relays (do a search on the word "relay" to find them). The relay will also be connected to the battery bank. Then connect the relay also to a dump load (resistive load). When the voltage on the battery bank is high enough (full), the voltage controlled switch will automatically turn on the relay. The relay in turn will allow current to flow from the battery bank through the high power resistive loads (dump loads).

VCS or voltage controlled switch diagram

2) Use a Wind Machine Controller from Solar Converters (do a search on "LDR" to find all of the models available). Then simply connect that to the dump load and the battery bank. This is probably the easiest solution for most people.

LDR wind machine controller diagram

LDR mounted in control  box
Pictured above is the LDR as a bare circuit board (that green board) being placed in the Lakota's controller box. There's enough room to do that. While we sell the LDR with no enclosure (as pictured) we stock and recommend the one with the enclosure. The wiring is electrically the same, just that you don't place the circuit board inside the Lakota's controller box (which contains 4 rectifiers and a stop switch).

A special note about the dump load (resistive load) - we recommend on using our adjustable resistive dump loads as the dump load (do a search on "dump" to find out dump load resistor). You will need two of these. The configuration of the adjustable dump load will depend on the voltage turbine you'll be using:

12V
Configure the resistors to 0.25 Ohms and place the two resistors in parallel connections.

24V
Configure the resistors to 0.75 Ohms and place the two resistors in parallel connections.

48V
Configure the resistors to 0.75 Ohms and place the two resistors in series connection.

Warranty

Standard factory five (5) years parts and labor carry-in warranty plus seven (7) years blade parts warranty. All warranty claims will be serviced at an authorized U.S. service center. Tower components excluding cable, clamps and fasteners shall carry a limited Life Time parts only, carry-in warranty.

PDF Download Documentation
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Click here for FREE download!

PDF Format must be viewed with Adobe Acrobat Reader See PDF files in Multimedia section below

Aeromax


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