Coreless Permanent Magnet Generator with Low Start Torque High Efficiency and Maintenance-Free Design for Heavy Duty Applications
Price:
Negotiable
MOQ:
1Set
Delivery Time:
25 Working Days
Brand:
Greef
Product Description
Inner Rotor Multi Poles Rare Earth Permanent Magnet Solutions
Product Overview
The GREEF NEW ENERGY GDG series features a disc type permanent magnet generator that operates without an iron core. In this innovative design, the spindle and rotor are arranged in a disc-shaped stack, with the stator fixed at the center while the rotor rotates on both sides. The spindle contains only windings without an iron core, and both stator and rotor are constructed as flat disc structures utilizing axial air gap magnetic flux.
The alternating arrangement of stator and rotor along the axial direction, combined with the generator's short axial length and large diameter, easily supports multi-pole configurations. This structure delivers a high power-to-mass ratio, low speed rating, and enables starts even at low wind speeds. Additional benefits include compact size, low energy consumption, lightweight construction, and high efficiency.
Due to low aerodynamic resistance from vertical axis rotor mounting, the GDG series is ideal for direct-drive vertical axis wind turbines. Available in two variants: outer rotor type (stationary shaft with rotating casing, cable exit through shaft center) and inner rotor type (stationary casing with rotating shaft, cable exit from outside casing).
Key Features
- Low Start Torque Technology: Less than 0.1 N*m starting torque due to absence of hysteresis and gear notch effects
- High Efficiency: Eliminated core reduces mechanical resistance and energy loss with "Precise Coil" technology
- Advanced Magnetic Design: Rare earth permanent magnets with multiple poles and small air gap for high power density
- Gearless Direct Drive System: Maintenance-free brushless construction for improved reliability
- Higher Reliability and Longevity: Special structural design provides eight times longer lifespan than traditional generators
- Enhanced Low Wind Speed Utilization: Superior performance at low wind speeds for maximum power generation
- Excellent Heat Dissipation: Aluminum alloy outer frame with specialized internal structure for thermal management
Technical Specifications
| Parameter | Specification |
|---|---|
| Efficiency | >92% (high efficiency) |
| Generator Shell Material | Aluminum Alloy |
| Shaft Material | Steel |
| Structure | Inner/Outer Rotor |
| Start Torque | <0.03 N*m |
| Noise Level | Low Noise Operation |
| Winding Method | Y |
| Stator | Coreless Wire Coil |
| Phase Type | 3 Phase |
| Mounting Type | Flange Or Foot Mounted |
This Coreless Permanent Magnet Generator is designed for customization according to your requirements, offering customized options and ensuring high efficiency performance.
Applications
- Wind Power Generation: Ideal for megawatt-class wind turbines with enhanced output density and efficiency through eliminated iron core reducing iron and hysteresis losses
- Renewable Energy: Widely used in solar power generation systems and other sustainable energy solutions for efficient energy conversion
- Industrial Applications: Suitable for diverse industrial applications requiring efficient, lightweight, and dependable power sources as backup or auxiliary power supplies
- Customized Applications: Flexible design allows customization of power output, rotational speed, and voltage parameters for various operational scenarios
Customization Options
Greef offers customized Coreless Permanent Magnet Generators (model GDG) from Qingdao with CE certification. Minimum order quantity: 1 set with negotiable pricing. We specialize in both outer-rotor and inner-rotor generator designs using rare earth permanent magnets for efficient, reliable operation with low noise levels.
Mounting types can be customized as flange or foot mounted. Shafts are made of durable steel for long-lasting performance. Packaging includes foam and plywood cases for safe delivery. Delivery time: approximately 25 working days. Payment terms: T/T, Western Union, MoneyGram, and L/C. Strong supply capability with Wending Method Y for enhanced operational stability.
Packaging & Shipping
Product Packaging: Each Coreless Permanent Magnet Generator is wrapped in anti-static bubble wrap and placed in custom-fitted foam inserts within sturdy corrugated cardboard boxes. Packaging is designed to absorb shocks and prevent movement during shipping, with clear handling instructions and product labeling.
Shipping: Reliable shipping via trusted courier services with tracking available. Options include standard ground, expedited air, or express delivery. All shipments are insured against loss or damage. Customers receive confirmation emails with tracking details upon dispatch.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Qingdao Greef New Energy Equipment Co., Ltd
Location
2-111, NO.6 CHANGCHENG NANROAD,CHENGYANG DISTRICT, QINGDAO, CHINA
Contact Person
Christina Lei