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Start Torque Less Than 0.03N·M Coreless Permanent Magnet Generator
Product Overview
The GREEF NEW ENERGY GDG series disc type permanent magnet generator features an innovative coreless design where the spindle and rotor are assembled in a disc-shaped stack. The stator remains fixed at the center while rotors rotate on both sides, with the spindle containing only windings and omitting traditional iron cores.
Both stator and rotor utilize a flat disc structure with axial air gap magnetic flux, alternately arranged along the axial direction. This configuration enables a short axial length with large diameter, supporting multi-pole design for high power-to-mass ratio, low speed rating, and low wind speed startup capability.
Available in outer and inner rotor models, the GDG series offers compact size, low energy consumption, lightweight construction, and robust efficiency, making it ideal for direct-drive vertical axis wind turbines.
Key Features
Low Start Torque Technology: Starting torque less than 0.1 N·m ensures smooth operation from startup
High Efficiency: Coreless design reduces mechanical resistance and energy loss
Advanced Magnetic Design: Rare earth permanent magnets with multiple poles and small air gap
Gearless Direct Drive: Brush-less design requires no maintenance
Higher Reliability: Eight times longer lifespan than traditional generators
Optimized for Low Wind Speeds: Enhanced utilization in low wind conditions
Excellent Heat Dissipation: Aluminum alloy frame with specialized internal structure
Technical Specifications
Structure
Inner/Outer Rotor
Power
0.2-100 KW
Rotor
Rare Earth Permanent Magnet
Mounting Type
Flange Or Foot Mounted
Winding Method
Y
Noise Level
Low Noise Operation
Start Torque
<0.03N·M (low start torque)
Material
Aluminum Alloy
Stator
Coreless Wire Coil (small air gap)
Phase Type
3 Phase (high efficiency)
Applications
Wind Power Generation: Ideal for megawatt-class wind turbines with enhanced output density
Renewable Energy: Solar and wind power generation systems
Industrial Applications: Backup or auxiliary power sources for critical equipment
Customized Solutions: Tailored parameters for specific operational requirements
Customization Services
Greef offers comprehensive customization for our GDG Coreless Permanent Magnet Generator, manufactured in Qingdao. This outer-rotor generator features coreless wire coil stator and operates with low noise, providing high power density solutions.
Customization Options:
• Power Range: 0.2 to 100 KW
• Mounting: Flange or foot mounted
• Packaging: Foam and plywood cases for safe delivery
• Certification: CE certified
• Minimum Order: 1 set
• Delivery: 25 working days
Contact Information:
Pricing is negotiable with payment terms including T/T, Western Union, MoneyGram, and L/C. Contact Greef today to customize your coreless permanent magnet generator.
Packaging & Shipping
Product Packaging: Each generator is securely placed in custom foam inserts within sturdy double-walled cardboard boxes with moisture-resistant wrapping and clear handling instructions.
Shipping: Reliable shipping via trusted carriers with tracking information. Standard or expedited methods available with full insurance coverage for damage protection.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
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,&...
