Rare Earth Permanent Magnet Multi-poles Customized Rated Voltage Motors
Designed for Power Conversion and Mechanical Reliability
Product Overview
The GREEF NEW ENERGY GDG series disc-type permanent magnet generator features an innovative iron core-free design. This unique generator employs a spindle and rotor arranged in a disc shape, with the stator fixed at the center and rotors rotating on both sides. The spindle contains only windings without an iron core, contributing to its distinctive construction.
Both stator and rotor adopt a flat disc structure using axial air gap magnetic flux. They are alternately positioned along the axial direction, combined with the generator's short axial length and large diameter, facilitating multi-pole setup creation. This design ensures high power-to-mass ratio, supports low-speed operation, allows starting at low wind speeds, and results in a compact, lightweight generator with efficient energy consumption.
The GDG series generators are highly efficient with compact structure and reduced wind resistance when mounted on vertical axis wind turbines. Benefits include small size, light weight, and high overall efficiency, making them ideal for direct-drive vertical axis wind turbine applications.
Available in two configurations: outer rotor type (stationary casing with rotating rotor shaft, cables exiting from shaft center) and inner rotor type (fixed casing with rotating shaft, cables routed outside casing).
Key Features
- Low Start Torque Technology: Absence of hysteresis and gear notch effects results in exceptionally low starting torque (<0.1 N·m) for smooth, efficient operation
- High Efficiency: Elimination of core reduces mechanical resistance and energy losses; "Precise Coil" technology enhances performance
- Advanced Magnetic Design: Rare earth permanent magnets with multiple poles and small air gap achieve high power density and large output power
- Gearless Direct Drive: Brushless, maintenance-free operation reduces downtime and enhances reliability
- Enhanced Reliability: Special structural design increases power-to-volume and power-to-weight ratios with 8x longer lifespan than traditional generators
- Optimized Low Wind Performance: Higher utilization rates in low wind speed environments
- Excellent Heat Dissipation: Aluminum alloy outer frame with specialized internal structure maintains optimal operating temperatures
Applications
- Wind Power Generation: Significant promise in megawatt-class wind turbines; boosts output density and system efficiency; reduces iron and hysteresis losses
- Renewable Energy Systems: Extensive use in solar and wind power generation setups with efficient energy conversion and reliable operation
- Industrial Applications: Lightweight, efficient power source for backup or auxiliary power supplies in various industrial contexts
- Customized Solutions: Flexible design allows customization of power output, rotational speed, and voltage parameters to meet specific operational demands
Customization Options
Model: GDG Coreless Permanent Magnet Generators
Origin: Qingdao
Rotor: Rare earth permanent magnet
Bearings: NSK deep groove ball bearings
Certification: CE certified
Design Feature: Small air gap for enhanced efficiency and reliability
System: 3-phase
Mounting: Flange or foot mounted options
Operation: Maintenance-free
Packaging: Foam and plywood cases for safe delivery
Lead Time: 25 working days
Minimum Order: 1 set
Payment Terms: T/T, Western Union, MoneyGram, L/C
Packaging & Shipping
Product Packaging: Each unit is securely placed in custom-fitted foam inserts within sturdy cardboard boxes to prevent movement and damage. Eco-friendly, recyclable packaging materials used. All components individually wrapped to avoid scratches and contamination. Outer boxes clearly labeled with handling instructions and product information.
Shipping: Reliable worldwide shipping via trusted couriers with tracking available. Typical delivery: 5-15 business days. Expedited options available upon request. All shipments comply with international regulations and include necessary documentation (invoices, customs declarations).
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