Permanent magnet generator for wind turbine 50kW

Rated power (W)                                                50000

Maximum output power (W)                             75000

Battery bank voltage (VDC)                              400

Cut-in wind speed (m/s)                                   2

Rated wind speed (m/s)                                  11

Working wind speed (m/s)                               2.5-25

Survival wind speed (m/s)                                50

Generator efficiency                                          >0.92

Generator type                                                    Permanent Magnet Alternator

Blade material/quantity                                     GRP/3

Blade diameter (m)                                           12.0

Overspeed control                                            Yaw + Electromagnetic brake + Hydraulic brake

Shutting down method                                     Manual + Automatic

Components of magnet generator 50kW wind turbine system:

1. Generator Part

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. NSK Bearings

Two NSK bearings ensure the reliability the longevity of our generator. Wide temperature ranges: operation in the high temperature (150-350ºC). 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. Siemens PLC control

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.

Picture of magnet generator 50kW wind turbine tower: