Features of 20kW wind turbine:
1. PMG generator
It is composed of the patented SCF generator, the nose cone, and the protection cover. Hummer adopts the state-of-the-art SCF supercritcial generator, which is installed in the hub, easy to radiate heat and reduce wind resistance. Made of high-efficiency magnetic materials, special copper alloy, high-strenghth stainless steel and aeronautic aluminum alloys, which is extremely light in weight and small in size, but with higer power producing efficicency.
2. SKF Bearings
Two SKF bearings ensure the reliability the longevity of our generator. Wide temperature ranges: Operation in the high temperature (150-350º C). Long life span, reach up to 60000-100000 hours. User may not change the bearing during the wind turbine using. It can greatly reduce the maintenance costs.
3. Blades
The blades are made of glass reinforced plastic, efficiently turn the wind energy into the mechanical energy. Every set of the three blades has passed the strict balance test before the shipping. It is important to fix the blades together which belongs to one set to the flange and never mix them up with other blades which belongs to another wind turbine.
4. Dogvane & Anemometer
They receive the signals of the wind direction and the wind speed.
The dogvane reads the average value of the wind direction every 120 seconds. If the angle between the dogvane and the wind generator axis depasses 10° , the 24V motor will drive the yaw shaft to turn and follow the wind direction automatically.
The anemometer mesures the realtime wind speed. If the wind blows non-stop over 3m/s during 20 seconds, the automactic wind tracking program will start to make the rotor blades surface face the wind correctly; If the wind speed drops below 3m/s, the tracking program will turn to stand-by.
5. Off-grid Inverter & On-grid Inverter
Hummer off-grid inverter adopts SPWM (Sinusoidal Pulse Width Modulation) technology, is able to invert DC with higer efficiency into AC with stable frequency and voltage, filters the noise as well. It is used in the off-grid power system.
Hummer on-grid inverter adopts MPPT (Maximum Power Point Tracking) technology and IGBT (Insulated Gate Bipolar Transistor), is able to invert DC with a high power producing capacity and a wider AC voltage output range. It connects to the public grid and there is no need for any power storage device
6. Siemens PLC
Hummer PLC (Programmable Logic Controller) adopts the Siemens controlling module and is equiped with a touch screen. It can alarm and adjust the abnormal running status of the wind turbine automatically. Siemens module offers high reliability to our PLC and its customers worldwide can testify for that. It easy to control and operate your wind turbine via our PLC easily and efficiently.
7. Dump Load Box
To protect the system against the risk of being overloaded with too much power.
Metal box design of the dump load radiates the heat of the resistance inside quickly via the air convection. So there is no need for an extra fan.
| Model No. | H9.0-20KW |
| Configuration | 3 Blades, Horizontal axis, Upwind |
| Rotor Diameter | 9.0 m / 29.5 ft |
| Swept Area | 63.62 m2 / 541.1 ft2 |
| Direction of Rotation | Clockwise looking upwind |
| Blade Material | Fiberglass reinforced composite |
| Rated Power | 20 kW @ 11.5m/s |
| Battery Bank Voltage | 240 Vdc |
| System Output Voltage | 380 Vac three phase |
| Cut-in Wind Speed | 3 m/s |
| Rated rotating rate | 180 r/min |
| Working Wind Speed | 3-25 m/s |
| Survival Wind Speed | 50 m/s |
| Alternator | Permanent magnet alternator, SCF technology |
| Alternator Weight | 496 kg / 1093.5 lbs |
| Energy monitoring & User control | Siemens PLC controller with touch screen |
| Gearbox | None, Direct drive with front generator design |
| Over Speed Regulation | Auto Yawing |
| Shutting Down Method | Manual & Automatic electromagnetism Braking |
| Warranty | 2 years |
Anhui Hummer Dynamo Co., Ltd. is a professional wind generators manufacturer with high-tech in the field of wind energy.
We specialize in researching, developing, producing and promoting of small-sized wind generator system, and also provide solutions for setting up small-scaled wind farm. After nearly 30 years efforts, our company has developed independent intellectual property rights of "Hummer" wind generator and control system.
There are more than 200 employees in the company including 40 R&D staff. And the factory covers over 30, 000 square meters with the workshop more than 7.5 Acres. There are more than 100 sets of large machines for processing, cutting and spray-painting equipments, and also many testing and examining systems. The monthly output is 3, 000 sets.
All Hummer small-sized wind generators including wind generator from 400W to 200KW, which have acquired CE certificate. Meanwhile, Hummer' S wind generator with good reputation can be found in more than 91 countries and regions, such as EU, North America, Oceania, Africa and Asia.
Hummer' S wind generators have the features of "Super Light, Small, Swift and High efficiency" when comparing with traditional' S. We have a powerful R&D team (consisting of experts enjoying government allowance), providing a reliable strength for product upgrade& technical support. The management team has abundant experiences in production, marketing, service and consultation. Until now our company has formed a comprehensive management system of research, study, development and service.
Hummer aims to be a worldwide influential enterprise as well as the best domestic manufacturer and service provider.
