Frequency 50/60Hz Multi-Pole Switches with 100MΩ Min Insulating Resistance at 501V DC
Product Overview
The GREEF NEW ENERGY GDG series disc type permanent magnet generator features a unique iron core-less design. In this generator, the spindle and rotor are assembled into a disc shape, where the stator is fixed at the center and the rotor rotates on both sides. Notably, the spindle contains only windings without any iron core.
Both the stator and rotor adopt a flat disc structure and utilize axial air gap magnetic flux. They are arranged alternately along the axial direction, which, combined with the generator's short axial length and large diameter, facilitates the construction of a multi-pole structure. This design offers several advantages including a high power-to-mass ratio, low rated speed, and low startup wind speed.
Additionally, the compact and lightweight configuration, low energy consumption, and high efficiency make it an excellent choice. Due to its low aerodynamic resistance caused by the rotor mounted on a vertical axis wind turbine, it is especially suitable as a direct-drive generator for vertical axis wind turbines.
The GDG series disc type permanent magnet generators are manufactured in two main configurations: the outer rotor type and the inner rotor type. In the outer rotor version, the shaft remains stationary while the casing rotates, and the cable is routed through the middle of the shaft. Conversely, in the inner rotor type, the casing is fixed, the shaft rotates, and the cable exits the casing externally.
Key Features
- Low Start Torque Technology: The absence of hysteresis and gear notches results in an extremely low starting torque, measuring less than 0.1 N*m.
- High Efficiency: The coreless design minimizes mechanical resistance and significantly reduces energy loss. This efficiency is further enhanced by the use of our "Precise Coil" technology.
- Advanced Magnetic Design: Incorporating rare earth permanent magnets with multiple poles, a small air gap, and high power density, this design delivers large output power effectively.
- Gearless Direct Drive: Featuring a gearless, brushless configuration, this technology ensures maintenance-free operation and improved reliability.
- Enhanced Reliability: The special structural design provides a higher power-to-volume and power-to-weight ratio, yielding a lifespan that is eight times longer than traditional generators.
- Optimized for Low Wind Speed: This technology enables greater utilization of wind turbines in conditions of low wind speed, maximizing energy generation.
- Excellent Heat Dissipation: The aluminum alloy outer frame combined with a specially designed internal structure provides superior heat dissipation, ensuring stable performance.
Technical Parameters
| Rated Voltage |
48V/96V |
| Speed |
100-500 RPM |
| Cooling Method |
Air Cooled |
| Efficiency |
>92% |
| Rated Power |
500W - 100 KW |
| Phase Type |
3 |
| Generator Material |
Aluminum Alloy |
| Insulating Resistance |
100MΩ Min (501V DC) |
| Frequency |
50/60Hz |
| Winding Method |
Y |
Applications
Wind Power Generation: Axial flux coreless generators demonstrate significant potential in the field of wind power generation. This is especially true for megawatt-class wind turbines, where these generators can greatly enhance output density, thereby improving the overall efficiency of wind energy systems. The unique design, which eliminates the iron core, helps reduce iron losses and hysteresis losses. As a result, the generator operates with higher efficiency compared to traditional counterparts.
Renewable Energy: Beyond wind power, axial flux coreless generators are widely utilized in a variety of renewable energy applications, including solar and wind power systems. Their effective energy conversion capabilities paired with dependable performance make them well-suited for use within renewable energy infrastructures.
Other Industrial Applications: Aside from renewable energy, these generators find applications in various industrial sectors that demand efficient, lightweight, and reliable power sources. For instance, they can serve as backup or auxiliary power supplies to ensure steady power delivery to industrial machinery and equipment.
Customized Applications: Thanks to the adaptable structure of the axial flux coreless generator, it can be tailored to meet specific customer requirements. Key parameters such as generator power, rotational speed, and output voltage can be modified to suit diverse application scenarios, offering flexibility and versatility in its deployment.
Customization Options
Greef offers high efficiency Coreless Permanent Magnet Generators under the model number GDG, proudly made in Qingdao. Our products are CE certified, ensuring top quality and reliability. We provide customization services to meet your specific requirements, including rated voltage options of 48V or 96V and rated power ranging from 500W to 100KW.
Our generators feature a 3-phase type design with excellent insulating resistance of 100MΩ minimum (501V DC) and are air cooled for optimal performance. With a minimum order quantity of just 1 set, we cater to both small and large scale demands.
Packaging is handled with care using foam and plywood cases to ensure safe delivery. Delivery time is approximately 25 working days. Payment terms are flexible, including T/T, Western Union, , and L/C.
Choose Greef for high efficiency, reliable, and customizable Coreless Permanent Magnet Generators, backed by a strong supply ability and negotiable pricing to suit your business needs.
Packing and Shipping
Product Packaging: The Coreless Permanent Magnet Generator is carefully packaged to ensure maximum protection during transit. Each unit is enclosed in anti-static bubble wrap and placed inside a custom-fit foam insert to prevent movement and absorb shocks. The generator and its accessories are then placed in a sturdy, double-walled corrugated cardboard box. The packaging is labeled with handling instructions and product details to facilitate safe and efficient logistics.
Shipping: We offer worldwide shipping with various delivery options to suit your needs. The Coreless Permanent Magnet Generator is shipped via trusted carriers with tracking available for all shipments. We ensure timely dispatch and provide estimated delivery times based on the destination. For international shipments, all necessary export documentation and customs declarations are handled to ensure smooth clearance. Fragile handling is requested to maintain the integrity of the product throughout the shipping process.
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