200W High Efficiency Low Rpm Coreless Permanent Magnet Generator
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Product Highlights
- Low Start Torque: Utilizes Precise Coil technology to achieve start torque as low as <0.1 N.M.
- Coreless Design: Disc coreless structure reduces volume and weight while eliminating gear notches.
- High Efficiency: Efficiency exceeds 85% with high utilization of low-speed wind energy.
- Durable Materials: Constructed with high-stability Nd-Fe-B magnets and aluminum alloy shell.
- Long Lifespan: Special structure offers a lifespan 8 times longer than traditional motors.
- OEM Service: Customizable generator types and power ratings from 300W to 10kW.
- Robust Warranty: Comes with a free 3-year warranty covering parts and labor for quality issues.
- Versatile Application: Ideal for vertical axis wind turbines, hydroelectric, and diesel generator systems.
Product Attributes
- Customization
- Available
- Output Type
- AC Three Phase
- Generator Type
- 3 Phase AC Coreless Permanent Magnet Generator
- Model NO.
- GDG
- Rated Power
- 300W to 10kw
- Rated Speed
- 100-300rpm
- Rated Voltage
- 12-400VAC
- Start Torque
- < 1 N.M
- Generator Shell Material
- Aluminum Alloy
- Magnetic Material
- ND-Fe-B
- Structure
- out Rotor
- Lifetime
- 20 Years
- Service
- OEM
- Transport Package
- Plywood Case
- Specification
- Medium
- Trademark
- GREEF
- Origin
- China
- HS Code
- 85016100
- Production Capacity
- 1000 Sets/Year
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Product Description
Magnetic Generator Product Description
GreeF company supply modified kinds of Coreless Disk Permanent Magnet Generator. The main models are as follow:
GDG-0.2KW 200RPM
GDG-0.5KW 200RPM
GDG-1KW 150RPM
GDG-1KW 180RPM
GDG-2KW 120RPM
GDG-2KW 180RPM
GDG-3KW 100RPM
GDG-3KW 180RPM
GDG-5KW 100RPM
GDG-5KW 150RPM
GDG-10KW 100RPM
GDG-10KW 150RPM
The magnetic generators are always being used in vertical axis wind turbine generator, diesel gasoline 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
Magnetic Generator Features
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
| Model | 0.5KW-200RPM | 1KW-180RPM | 1KW-200RPM | 2KW-120RPM | 2KW-180RPM |
| Rated Power | 0.5KW | 1KW | 1KW | 2KW | 2KW |
| Rated Rotate Speed | 200 RPM | 180RPM | 200RPM | 120RPM | 180RPM |
| Rated Voltage | 56Vac | 56Vac | 56Vac | 115Vac | 115Vac |
| Rated Current | 9A | 12A | 17.9A | 10A | 17.4A |
| Efficiency | >85% | ||||
| Wending Method | Y | ||||
| Insulating Resistance | 100Mohm 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 Type | 3 Phase | ||||
| Structure | Out rotor | ||||
| Stator | Coreless wire coil | ||||
| Rotor | Rare Earth Permanent Magnet | ||||
| Generator Shell Diameter | 320 | 380 | 380 | 550 | 450 |
| Generator Shell Length |
232 | 241 | 241 | 330 | 258 |
| Weight | 20 | 32 | 32 | 75 | 51 |
| Shaft Drameter | 45 | 50 | 50 | 78 | 59 |
| Generator Shell Material | Aluminum alloy | ||||
| Shaft Material | Carbon steel | ||||
| Bearing | Deep groove ball bearing | ||||
| Model | 3KW-100RPM | 3KW-180RPM | 5KW-100RPM | 5KW-150RPM | 10kw-100RPM |
| Rated Power | 3KW | 3KW | 5KW | 5KW | 10KW |
| Rated Rotate Speed | 100RPM | 180RPM | 100RPM | 150RPM | 100RPM |
| Rated Voltage | 220Vac | 220Vac | 220Vac | 220Vac | 380VAC |
| Rated Current | 4.6A | 4.7A | 7.6A | 15.2A | 14.5A |
| Efficiency | >85% | ||||
| Wending Method | Y | ||||
| Insulating Resistance | 100Mohm Min(500V DC) | ||||
| Leakage Level | <5 ma | ||||
| Start Torque | <1 N/M | <0.5 N/M | <0.5 N/M | <1 N/M | <1N/M |
| Phase Type | 3 Phase | ||||
| Structure | Out rotor | ||||
| Stator | Coreless wire coil | ||||
| Rotor | Rare Earth Permanent Magnet | ||||
| Generator Shell Diameter | 620 | 550 | 700 | 620 | 770 |
| Generator Shell Length | 410 | 330 | 400 | 410 | 590 |
| Weight | 110 | 65 | 125 | 110 | 245 |
| Shaft Drameter | 80 | 78 | 98 | 80 | 85 |
| Generator Shell Material | Aluminum alloy | ||||
| Shaft Material | Carbon steel | ||||
| Bearing | Deep groove ball bearing | ||||
Currently we offer wide range:
------ 300W-100kw FRP wind turbine blades
------ Horizontal Axis Wind Turbine generator (HAWT)
------ Vertical Axis Wind Turbine generator (VAWT)
------ Solar and wind hybrid system
------ Solar panel
------ Permanent Magnent Generator
------ Controllers, invertor, battery and relation products
Magnetic Generator Drawing Sample

Magnetic Generator Power Curve Sample
Magnetic Generator Pictures
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
If you have any questions, please do not hesitate to contact us.
About the Supplier
Company Profile
GREEF: Green Renewable Energy Earth Future
In a world grappling with environmental challenges and the urgent need for sustainable solutions, GREEF emerges as a beacon of hope. Our brand name, GREEF, is an acronym where each letter holds a profound meaning: G for Green, R for Renewable, E for Energy, E for Earth, and F for Future. This acronym is not just a name; It's a promise, a mission, and a vision that drives everything we do. Our logo, a vibrant blend of green hues intertwined, visually encapsulates our commitment to a sustainable and thriving future for our planet.
The Origin of GREEF
The story of GREEF begins with a simple yet powerful dream: To create a world where green renewable energy is accessible to all, ensuring a sustainable future for generations to come. Our founders, a group of passionate environmentalists and engineers, recognized the pressing need to transition away from fossil fuels and towards cleaner, renewable sources of energy. They envisioned a company that would not only provide innovative energy solutions but also inspire a global movement towards sustainability.
GREEF specializes in providing advanced system solutions for wind, hydro, and solar energy, with globally deployed wind turbines renowned for ultra-low cut-in wind speeds, minimal noise emissions, and aerodynamically optimized designs that perform reliably across diverse climatic and environmental conditions. Our permanent magnet generators cover a power range from 500W to 5MW. Fifty percent of our core engineering team possesses 12-20 years of industry expertise, enabling customized end-to-end solutions encompassing holistic design planning, schematic development, 3D renderings, physical prototyping, volume production, quality control, and after-sales service. Our rapid-response system significantly reduces clients' time and cost pressures.
Products exported to Europe, South America, North America, and global markets carry CE certification with 3-5 year warranty periods, while quality and on-time delivery are guaranteed by ****** Trade Assurance. Since inception, we've upheld our mission to deliver economical and reliable power solutions through renewable energy innovation, accelerating global green energy transition. Our credo "Green Renewable Energy for Earth's Future" embodies our conviction in a sustainable tomorrow - our brand story transcends actions to encompass our purpose and the impact we strive to create.
About Our Factory & Business Background
- Address
- 2-111, No, 6 Changcheng Soth Road, Chengyang Dist, Qingdao, Shandong, China
- Terms of Payment
- T/T, PayPal, Western Union, Money Gram
- International Commercial Terms(Incoterms)
- FOB, EXW, CFR, CIF, DDP, CPT, Others, FCA
- Nearest Port
- QINGDAO
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Export Year
- 2014-03-18
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- What is the warranty period?
- We provide a free 3-year warranty starting from the date of shipment shown on the bill of lading or air waybill.
- What is the start torque of the generator?
- The start torque is extremely low, ranging from less than 0.1 N.M to less than 1 N.M depending on the model.
- What is the efficiency of the magnetic generator?
- The generator features high efficiency with an output greater than 85%.
- What materials are used for the generator shell and magnets?
- The shell is made of aluminum alloy, and the magnetic material is high-stability Nd-Fe-B.
- What is the expected lifespan of the generator?
- Due to its special structure, the generator has a lifespan 8 times longer than traditional motors.
- What are the warranty terms for maintenance and shipping?
- During the warranty period, the company covers maintenance costs and freight for quality issues. Outside the warranty or for man-made damage, the customer pays for labor, materials, and freight.
- What is the rated power range available?
- We offer a wide range of models with rated power from 300W up to 10kW.
- How is the generator packaged for shipping?
- The generator uses inner foam protection and an outer plywood case, with the shaft protected by a pipe.
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