Qingdao Greef New Energy Equipment Co., Ltd
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Product Specification
| High Light | Low Start Torque Coreless Permanent Magnet Generator ，High Efficiency Axial Flux Generator ，Maintenance-Free Permanent Magnet Alternator | ||
GREEF NEW ENERGY GDG Series Disc Type Permanent Magnet Generator features a unique coreless design where the spindle and rotor are arranged in a disc shape. The stator is fixed at the center while rotors spin on both sides, with the spindle containing only windings and no iron core.
Both stator and rotor adopt a flat disc structure using axial air gap magnetic flux, alternately positioned along the axial direction. The short axial length combined with wide diameter allows for multi-pole configuration, resulting in high power-to-mass ratio, low operational speed, and ability to start at low wind speeds.
The GDG series offers compact size, low energy consumption, lightweight construction, and high efficiency, making it ideal for direct-drive vertical axis wind turbines. Available in outer rotor (stationary shaft, rotating casing) and inner rotor (rotating shaft, stationary casing) variants.
| Core Structure | Coreless |
| Speed | 100-500 RPM |
| Phase Type | 3 |
| Insulating Resistance | 100 Mohm Min (501V DC) |
| Frequency | 50/60 Hz |
| Winding Method | Y |
| Rated Voltage | 48V / 96V |
| Cooling Method | Air Cooled |
| Generator Material | Aluminum Alloy |
| Rated Power | 500W - 100 KW |
GREEF offers customized Coreless Permanent Magnet Generators (model GDG) designed and manufactured in Qingdao with CE certification. Features include small air gap, coreless structure, low start torque, and higher reliability.
Available with three-phase type, air-cooled cooling method, 50/60Hz frequency, and rated voltages of 48V/96V. Minimum order quantity: 1 set with negotiable pricing. Delivery within 25 working days with secure foam and plywood packaging.
Payment terms: T/T, Western Union, MoneyGram, and L/C.
Each generator is securely wrapped in protective foam and placed in sturdy custom cardboard boxes with multiple cushioning layers. Clear handling instructions and product details are provided.
Shipping options include standard, expedited, and freight services. All shipments are tracked and insured. Please inspect packages upon receipt and notify immediately of any damage.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2014
Total Annual:
2.5 Million-5 Million
Employee Number:
70~100
Ecer Certification：
Verified Supplier
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,&... 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,&...
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