$150.00 - $7,000.00
Min. Order : 1 Set

3kW Low RPM Axial flux coreless permanent magnet generator for vertical wind turbine

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Payment Terms: T/T,Western Union,MoneyGram,Alibaba Trade Assurance
Supply Ability: 7000 Set/Sets per Year
Brand Name: GreeF
Bearing brand: NSK
Start torque: <1N/M
Generator type: 3 phase AC
Place of Origin: Shandong China
Magenent Type: Nd-Fe-B
Efficiency: >90%
Model: AFPMG
Rated rotor speed: 100rpm 180rpm
Generator material: Aluminium body+copper wire+Nd-Fe-B
Structure: outer rotor
Model Number: PMG Series
Portection grade: IP 54
Qingdao Greef New Energy Equipment Co., Ltd.
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US$ 520,000+
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Low RPM Axial flux coreless permanent magnet generator 
They have two types: Outer Rotor and Inner rotor
Outer rotor: The shell will rotate to produce electricity, the shaft is fixed.
Inner rotor: The shaft will rotate to produce electricity, the shell is fixed.
500w 3.jpg
Magnetic Generator Product Description


GreeF company supply modified kinds of Coreless Disk Permanent Magnet Generator. The main models are as follow:


Outer Rotor Model:

The shell will rotate to produce electricity, the shaft is fixed.

  • GDG-0.05kW 200RPM
  • GDG-0.1kW 200RPM
  • GDG-0.2kW 200RPM
  • GDG-0.3KW 200RPM
  • GDG-0.5KW 200RPM
  • GDG-1KW 180RPM
  • GDG-1KW 200RPM
  • GDG-2KW 120RPM
  • GDG-2KW 180RPM
  • GDG-3KW 100RPM
  • GDG-3KW 180RPM
  • GDG-5KW 100RPM
  • GDG-5KW 150RPM
  • GDG-10KW 100RPM
  • GDG-12kW 100RPM
  • GDG-20kW 150RPM

Inner Rotor Model:

The shaft(axis) will rotate to produce electricity, the shell is fixed.

  • GDI-0.05kW 200RPM
  • GDI-0.1kW 200RPM
  • GDI-0.2kW 200RPM
  • GDI-0.3kW 200RPM
  • GDI-0.5kW 200RPM
  • GDI-1kW 150RPM/180RPM/300RPM
  • GDI-2kW 180RPM
  • GDI-3kW 180RPM
  • GDI-5kW 100RPM




The magnetic generators are always being used in vertical axis wind turbine generator, hydroelectric generator(water-power generator) and other generator system which requests very low start torque and low RPM.  
Magnetic Generator Overview


The coreless disk permanent magenetic generator is made of high-stability Nd-Fe-B materials.


The specific outer rotor magnetic circuit is designed in a special way. The magnetic generator


has following features:


Low starting torque, Low start wind speed, Low weight,small size ,High generating efficiency



Torque Patent Technology: use newest “Precise Coil” technology. No hysteresis and gear notches effect make the start torque very low <1N.M 

  • Original Structure: use disc coreless motor to take place traditional motor makes it less volume and weight.
  •  Higher Utilization: use special coreless motor technology to eliminate the use bottlenecks of lower speed wind energy.
  •  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.
  • Gearless, direct drive, low RPM generator.
  •  High standard, quality components for use in harsh and extreme environments for wind turbines
  • High efficiency and Low mechanical resistance energy loss.
  • Excellent heat dissipation due to the Aluminum alloy outer frame and special internal structure.


Magnetic Generator Technical Data


Rated   Power0.5KW1KW1KW2KW2KW
Rated   Rotate Speed                                                   200 RPM180RPM200RPM120RPM180RPM
Rated   Voltage                                               56VAC56VAC56VAC115VAC115VAC
Rated   Current9A12A17.9A10A17.4A
Wending   MethodY
Insulating   Resistance100Mohm Min(500V DC)
Leakage   Level<5 ma
Start   Torque<0.1N/M<0.3 N/M<0.3 N/M<0.5 N/M<0.3 N/M
Phase   Type3 Phase
StructureOut rotor
StatorCoreless wire coil
RotorRare Earth Permanent Magnet
Generator   Shell Diameter320380380550450
Generator   Shell Length232241241330258
Shaft   drameter4550507859
Generator   shell materialAluminum alloy
Shaft   materialCarbon steel
BearingDeep groove ball bearing




Rated Power3KW3KW5KW6KW10KW
Rated   Rotate Speed                                                   100RPM180RPM100RPM150RPM100RPM
Rated   Voltage                                               380VAC380VAC380VAC380VAC400VAC
Rated   Current4.64.77.615.214.5
Wending   MethodYYYYY
Insulating   Resistance100Mohm Min(500V DC)100Mohm Min(500V   DC)100Mohm Min(500V   DC)100Mohm Min(500V   DC)100Mohm Min(501V   DC)
Leakage   Level<5 ma<5 ma<5 ma<5 ma<5 ma
Start   Torque<1 N/M<0.5 N/M<0.5 N/M<1 N/M<1N/M
Phase   Type3 Phase3 Phase3 Phase3 Phase3 Phase
StructureOut rotorOut rotorOut rotorOut rotorOut rotor
StatorCoreless wire coilCoreless wire   coilCoreless wire   coilCoreless wire   coilCoreless wire   coil
RotorRare Earth Permanent MagnetRare Earth   Permanent MagnetRare Earth   Permanent MagnetRare Earth   Permanent MagnetRare Earth   Permanent Magnet
Generator   Shell Diameter620550700620770
Generator   Shell Length410330400410590
Shaft   drameter8078988085
Generator   shell materialAluminum alloyAluminum alloyAluminum alloyAluminum alloyAluminum alloy
Shaft   materialCarbon steelCarbon steelCarbon steelCarbon steelCarbon steel
BearingSKF Deep groove ball bearingSKF Deep groove ball bearingSKF Deep groove ball bearingSKF Deep groove ball bearingSKF Deep groove ball bearing



Magnetic Generator Drawing Sample






Magnetic Generator Power Curve 


ON-LOAD Power Curve




 If you need the datasheets specification of other model generator, please send the inquiry with your interested model (GDG or GDI series), we will send the details specification to you ASAP.


Magnetic Generator Pictures 



 3KW 2.jpgHOT-500W-Low-noise-alternator-for-sale.jpgHOT-500W-Low-noise-alternator-for-sale.jpg
Magnetic Generator Packaging & Shipping

1. The magnetic generator use inner foam protection outer Plywooden case .Generator shaft use pipe protection.

2. Pakage size and weight please refer to our sales.

3. 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.




Our Services

 OEM service


Our magnetic generator is free 3 years 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 a fee to customers, free warranty if any damage outside the warranty period, the company will charge a fee 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.



Company Information








1.  Q:  Does installation Easy ?

      A:    Very easy, every customer can doing by themselves, we will supply all the components for installation and very detailed installation manual.


2.  Q: Does our wnd is enough for a wind generator ?

      A: As our wind generator can start running at low wind speed 3m/s. so your average annual wind speed is more than 5m/s then you can use it .


3.  Q: Which model wind generator is suitable for me?

     A: Plese 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-grid


4.  Q:Can I only buy parts not whole system?

    A: Yes,for example you can manufacture tower in local , we can suplly you tower drawing .


Any other questions ,please feel free to contact us .


Please send your inquiry,our team will contact you with 24 hours!