Low Speed Low Start Torque Vertical Axis Wind Turbine

300W to 5kW Vertical Axis Wind Turbine for Sale
Vertical Windmill Turbine (VAWTs) are atype of wind generator where the main rotor shaft is set vertically and the main components are located at the base of the turbine. VAWTs offer anumber of advantages over traditional horizontal-axis wind turbines (HAWTs). They can be packed closer together in wind farms, allowing more in agiven space. They are smaller, but rather due to the slowing effect on the air that HAWTs have, forcing designers to separate them by ten times their width.GreeF VerticalWindmill Turbine are rugged, quiet, light, Omni-directional, and they do not create as much stress on the support structure. They do not require as much wind to generate power, thus allowing them to be closer to the ground. By being closer to the ground they are easily maintained and can be installed on rooftop and similar tall structures.
Recommend for
Household, Garden, farm
Telecom sites. Rural electrification programs. Island, sentry, island, sight lighting.Technical Specification
GREEF 300W Vertical Wind GeneratorModelGV-300WRated Power(W)300WMax Power(W)400WRated Rotor Speed(rpm)200Start Torque(N.M)<0.1Blades Height(m)1.3Blades Rotor Diameter(m)1.2Blades Material&QuantitiyFRP /3PCSStart Wind Speed(m/s)1m/sRated Wind Speed(m/s)10m/sWorking Wind Speed(m/s)2-25m/sSafety Wind Speed(m/s)50m/sOption Voltage(V)12-24VGenerator TypeThree-phase AC out rotor disc permanent magnet direct drive generatorProtection MethodElectromagnetic disc brake+PWMGenerator Weight /Top Weight13kg/50kgSwept Area(m³)1.56System typeOff-GridControllerOff-Grid solar wind hybrid controllerInvertorOff-grid invertorTower TypeFree folding towerTower Height6mInsulation GradeBProtection GradeIP54Working Termperature-40°C - 50°CLife time20 Years
GREEF 500W Vertical Wind GeneratorModelGV-500WRated Power(W)500WMax Power(W)650WRated Rotor Speed(rpm)200Start Torque(N.M)<0.3Blades Height(m)1.5Blades Rotor Diameter(m)1.6Blades Material&QuantitiyFRP /3PCSStart Wind Speed(m/s)1m/sRated Wind Speed(m/s)10 m/sWorking Wind Speed(m/s)2-25m/sSafety Wind Speed(m/s)50m/sOption Voltage(V)12-24VGenerator TypeThree-phase AC out rotor disc permanent magnet direct drive generatorProtection MethodElectromagnetic disc brake+PWMGenerator Weight /Top Weight20kg/64kgSwept Area(m³)2.4System typeOff-GridControllerOff-Grid solar wind hybrid controllerInvertorOff-grid invertorTower TypeFree folding towerTower Height6mInsulation GradeBProtection GradeIP54Working Termperature-40°C - 50°CLife time20 Years
GREEF 1KW Vertical Wind GeneratorModelGV-1KWRated Power1000WMax Power1500WRated Rotor Speed120rpmStart Torque<0.3N.MBlades Height2.6( 8.528 ft.)Blades Rotor Diameter1.8(5.904 ft.)Blades Material&QuantitiyFRP /3PCSStart Wind Speed1m/s (2.24mph)Rated Wind Speed10m/s(22.4mph)Working Wind Speed1-25m/s (2.24-56 mph)Safety Wind Speed50m/s(112mph)Option Voltage24-220VGenerator TypeThree-phase AC out rotor disc permanent magnet direct drive generatorProtection MethodElectromagnetic brake+PWMGenerator Weight /Top Weight32kg/111kgSwept Area4.68 m2System typeOff/On GridControllerOff/on-Grid solar wind hybrid controllerInvertoroff/on- Grid invertorTower TypeFree folding towerTower Height6m(19.68ft.)Insulation GradeBProtection GradeIP54Working Termperature-40ºC - 50ºCLife time20 Years
GREEF 2KW Vertical Wind TurbineModelGV-2KWRated Power2000WMax Power2500WRated Rotor Speed120rpmStart Torque<0.3N.MBlades Height3.7m( 12.14 ft.)Blades Rotor Diameter2.6m(8.528 ft.)Blades Material&QuantitiyFRP /3PCSStart Wind Speed1m/s (2.24mph)Rated Wind Speed10m/s(22.4mph)Working Wind Speed1-25m/s (2.24-56 mph)Safety Wind Speed50m/s(112mph)Option Voltage24--380VGenerator TypeThree-phase AC out rotor disc permanent magnet direct drive generatorProtection MethodElectromagnetic brake+PWMGenerator Weight /Top Weight51kg/177kgSwept Area9.62 M2System typeOff/on-GridControllerOff/on-Grid solar wind hybrid controllerInvertoroff/on-Grid invertorTower TypeFree folding towerTower Height6m(19.68ft.)Insulation GradeBProtection GradeIP54Working Termperature-40ºC - 50ºCLife time20 Years
GREEF 3KW Vertical Wind TurbineModelGV-3KWPerformanceRated Power3kWMax Power4kWStart Wind Speed2m/s (4.48mph)Rated Wind Speed12m/s(26.88mph)Working Wind Speed2-25m/s (4.48-56 mph)Safety Wind Speed50m/s(112mph)Physical ParametersBlades Length3.7M(12.136ft)Blades Rotor Diameter2.5M(8.2ft)Blades Material &QuantityFRP /3PCSMill Weight355kgSwept Area9.25M2Tower Height8m(26.24ft.) Free folding towerGenerator ParametersGenerator TypeAxial Flux Corelessouter rotor disc permanent magnet direct drive generatorRated Speed100RPMStart Torque<1N.MOption Voltage120-400VProtection MethodElectromagnetic Brake +PWMProtection GradeIP54Working Temperature-40-50ºCLife time20 Years
GREEF 5KW Vertical Wind TurbineModelGS-5KWPerformanceRated Power5kWMax Power6kWStart Wind Speed2.8m/s (9.184mph)Rated Wind Speed12m/s(26.88mph)Working Wind Speed2-25m/s (4.48-56 mph)Safety Wind Speed50m/s(112mph)Physical ParametersBlades Length5.2M(17.056ft)Blades Rotor Diameter3.3m(10.824ft)Blades Material &QuantityFRP /3PCSMill Weight530kgSwept Area17.16 M2Tower Height12m (39.36ft.) Free Folding towerGenerator ParametersGenerator TypeAxial Flux Corelessouter rotor disc permanent magnet direct drive generatorRated Speed100RPMStart Torque<1N.MOption Voltage120-500VProtection MethodElectromagnetic Brake+PWMProtection GradeIP54Working Temperature-40-50ºCLife time20 Years
Axial Flux Coreless Generator
GREEF VAWTs use axial flux coreless disc generator which have following advantage:
1.Torque Patent Technology: use newest "Precise Coil" technology. No hysteresis and gear notches effect make the start torque very low <0.3N.M ,it can make the wind turbine have low start wind speed.
2.Original Structure: use disc coreless motor to take place traditional motor makes it less drag
3.Higher Reliability: special structure make it bigger ratio of power to volume, power to weight and have long life of 8 times longer than traditional motor.
4.Gearless, direct drive, low RPM generator.
Sound Data
Test position: 3kW Vertical Wind Turbine at 15m away from generator (average value of 3 point-rears, left, right)
Wind Speed (m/s)
3
4
5
6
7
8
9
10
11
Sound(dB)
1.35
3.08
6.22
9.45
13.24
22.09
31.55
36.45
37.22
Wind Speed (m/s)
12
13
14
15
16
17
18
19
20
Sound(dB)
45.33
45.22
45.33
45.43
45.54
45.66
45.76
45.85
46.00Note: The sound value includes wind noise.

System Design Service

Packaging & Shipping

1. Vertical wind turbine use inner foam protection outer Plywooden case .
2. Tower with Foam package only.
3. Controller invertor with inner carton box outer plywooden case.
4. Pakage size and weight please refer to our sales.
5. Shipping by sea with FCL LCL or by air.
If you have any request in package and shipping please tell our sales we will do according to your request.

Aftersales Service
Our main Vertical Windmill Turbine and battery are FREE THREE Years warranty, controller and invertor are 1years warranty.
All lifelong technical support and part cost supply.(1) The warranty period is start from the date of shipment which show on the bill of loading or air waybill.
(2) Free maintenance services during the warranty period the cost involved be borne by the company, do not charge afee to customers, free warranty if any damage outside the warranty period, the company will charge afee for labor costs and materials.
(3) The warranty period, company's quality problems caused by the maintenance of the freight borne by the company, if not under warranty or man-made damage, the freight charges by the customer.
FAQ
1. Q: Why buy asmall wind turbine?
A: AGREEF wind turbine is asmart investment that will lower your monthly expenses, increase your net worth. At the same time, it will help clean the air, slow climate change, and move us towards the energy independence. You will also enjoy watching your utility meter turn backwards and the lively interaction between the wind and your GREEF turbine. Finally, it will totally change your view of wind you will start appreciating windy days. For those fortunate enough to have awindy site of at least one acre, aGREEF wind system will be substantially less expensive than acomparable solar system, it will take up less space, and its performance won't degrade over time.It's like buying vs. Renting ahome
Over the next 10 years atypical homeowner or small bussiness will pay $18000 to over $5000 in electric bills, at rates that often increse faster than inflation. When you choose aGREEF wind system you take the same monthly expense and invest it in atangible asset. once your GREEF turbine is paid off, you will enkoy more money in your pocket every month for the next 20years.
2. Q: Does Vertical Windmill Turbine installation Easy?
A: Very easy, every customer can doin by themselves, we will supply all the components for installation and very details installation manual.3. Q: Does our wind is enough for aVertical Windmill Turbine?
A: As our Vertical Windmill Turbine can start running at low wind speed 1m/s. So your average annal wind speed is 4- 5m/s then you can use it.4. Q: Which model is suitable for me?
A: Please contact our sales with following points:
1. What appliance do you want to running by the system? How many watts are they and their working time.
2. Your annual wind speed.
3. What kinds of system do you want? On-grid or off-grid5. Q: Can Ionly buy parts of the Vertical Windmill Turbine not whole system?
A: Yes, for example you can manufacture tower in local, we can supply you tower drawing.