20 Years Life Time Enhancing Higher Reliability in Complex Environments Utilizing Wending Method Y Approach

Product Description:

The GREEF NEW ENERGY GDG series features a disc-type permanent magnet generator designed without an iron core. In this innovative design, both the spindle and rotor are arranged in a disc shape. The stator is positioned fixedly in the center, while the rotor rotates on either side. Notably, the spindle contains only windings and omits the iron core entirely.

Both the stator and rotor adopt a flat disc structure and utilize axial air gap magnetic flux. These components are arranged alternately along the axial direction. Due to the generator’s short axial length and large diameter, creating a multi-pole configuration is straightforward. This results in a device with a high power-to-mass ratio, a low-speed rating, and the capability to start at low wind speeds.

The GDG series generator also boasts a compact size, low energy consumption, light weight, and a compact, efficient structure. These features contribute to its high efficiency and superior performance. Because of its low aerodynamic resistance stemming from the rotor’s vertical axis positioning, this model is highly favored for use in direct-drive vertical axis wind turbines.

The GDG series is available in two variants: outer rotor and inner rotor. In the outer rotor type, the shaft does not rotate the casing, and the cable exits through the center of the shaft. Conversely, in the inner rotor type, the casing remains stationary, the shaft rotates, and the cable is routed outside the casing.

Features:

The technology features no hysteresis and eliminates gear notch effects, resulting in a very low starting torque of less than 0.1 N·m. This allows for smooth and efficient startups in various applications.

By removing the core, the design significantly reduces mechanical resistance and energy loss. This coreless configuration ensures higher efficiency during operation, maximizing energy output.

Incorporating “Precise Coil” technology enhances the system’s performance further, enabling precise electromagnetic control and improved overall functionality.

The use of rare earth permanent magnets along with multiple poles, a small air gap, and high power density leads to a substantial output power. These factors contribute to efficient energy conversion and a compact design.

The gearless direct drive and brushless construction ensure the system is maintenance-free, reducing downtime and operational costs.

Furthermore, a special structural design achieves a higher ratio of power to volume and power to weight. This construction extends the lifespan to be eight times longer than traditional generators, guaranteeing higher reliability.

This technology enables better utilization in low wind speed conditions, making it ideal for wind turbines operating in variable environments.

The aluminum alloy outer frame combined with a specialized internal structure provides excellent heat dissipation, maintaining optimal operating temperatures and overall system longevity.

Technical Parameters:

Applications:

Customization:

Greef offers customized Coreless Permanent Magnet Generators under the model number GDG, originating from Qingdao. Our generators are CE certified, ensuring high quality and safety standards. With a minimum order quantity of just 1 set, we provide flexible purchasing options and negotiable pricing to meet your specific needs.

Our Coreless Permanent Magnet Generators feature a winding method of Y and deliver a large output power ranging from 300W to 100KW. Designed with multi-poles, these generators provide higher reliability and excellent performance. The start torque is less than 0.03N/M, ensuring smooth and efficient startup.

Thanks to the coreless design, these generators require low maintenance due to no iron core losses, enhancing durability and reducing operational costs. The insulating resistance is guaranteed at a minimum of 100Mohm (501V DC), contributing to the overall safety and reliability of the product.

Packaging is done carefully with foam and plywooden cases to protect the product during transit. Delivery time is approximately 25 working days. We accept various payment terms including T/T, Western Union, MoneyGram, and L/C, providing convenience for our customers.

With a strong supply ability, Greef is committed to providing high-quality Coreless Permanent Magnet Generators tailored to your requirements, combining advanced technology with superior customization services.

Packing and Shipping:

Product Packaging:

The Coreless Permanent Magnet Generator is carefully packaged to ensure maximum protection during transit. Each unit is securely enclosed in anti-static foam padding and placed inside a sturdy, custom-designed cardboard box to prevent any movement or damage. The packaging is sealed with tamper-evident tape and clearly labeled with handling instructions, such as "Fragile" and "Handle with Care," to maintain product integrity.

Shipping:

We offer reliable shipping options to deliver the Coreless Permanent Magnet Generator safely and promptly to your location. Shipping is carried out through trusted carriers with tracking available for every order. Depending on your location, delivery times may vary, and expedited shipping options are available upon request. All shipments include insurance coverage to protect against loss or damage during transit.