Rare Earth Permanent Magnet multi poles stator featuring Y winding method

Product Description:

The GREEF NEW ENERGY GDG series features a disc-type permanent magnet generator that operates without an iron core. In this design, the spindle and rotor are arranged in a stacked disc formation. The stator is fixed at the center, while rotors rotate on both sides. Notably, the spindle contains only windings and does not include an iron core.

Both the stator and rotor adopt a flat disc structure, utilizing axial air gap magnetic flux. They are positioned alternately along the axial direction. Thanks to the compact axial length and large diameter of the disc generator, it is straightforward to implement a multi-pole configuration. This results in a generator that boasts a high power-to-mass ratio, low operational speed requirements, and the ability to start at low wind speeds.

In addition to its compact size and lightweight construction, the GDG series generator offers low energy consumption, a compact structural design, and high efficiency. These characteristics make it an ideal choice for direct-drive vertical axis wind turbines, where the rotor’s low resistance to wind is particularly advantageous.

The GDG series disc type permanent magnet generators come in two configurations: outer rotor and inner rotor types. In the outer rotor version, the shaft remains stationary while the casing rotates, and the cable exits through the middle of the shaft. Conversely, in the inner rotor design, the casing is fixed, the shaft rotates, and the cable is routed outside the casing.

Features:

The absence of hysteresis and gear notch effects results in an exceptionally low starting torque of less than 0.1 N·m. This feature ensures smooth and efficient operation from the very beginning.

With no core present, mechanical resistance and energy losses are significantly minimized. This leads to enhanced overall efficiency. The device utilizes advanced "Precise Coil" technology to further optimize performance.

Equipped with rare earth permanent magnets, the system features multiple poles and a small air gap, delivering a high power density and substantial output power.

The gearless direct drive design eliminates the need for brushes, making the device maintenance-free. This reduces potential points of failure and extends operational reliability.

A specialized structure allows for a high power-to-volume and power-to-weight ratio. Additionally, it boasts a lifespan that is eight times longer than traditional generators, ensuring long-term dependable performance.

The technology is optimized to maximize energy capture even during periods of low wind speed, improving the overall utilization of wind turbines.

The aluminum alloy outer frame, combined with a special internal structure, provides superior heat dissipation, protecting internal components and maintaining optimal operating temperatures.

Technical Parameters:

Applications:

Axial flux coreless generators demonstrate significant potential in the field of wind power generation. They are especially beneficial in megawatt-class wind turbines, where their use can greatly enhance output density, thereby improving the overall efficiency of wind energy production.

The design of these generators without an iron core helps to minimize iron losses and hysteresis losses, which contributes to higher operational efficiency compared to traditional generators.

Besides wind power, axial flux coreless generators are widely utilized in various renewable energy applications, including solar and wind energy systems. Their ability to convert energy efficiently and maintain reliable performance makes them well-suited for these clean energy technologies.

Beyond renewable energy, these generators find use in diverse industrial sectors that demand power supplies which are both efficient and lightweight. They can serve as backup or auxiliary power sources, ensuring stable and dependable electricity support for industrial machinery and equipment.

The flexible construction of axial flux coreless generators allows for customization tailored to specific customer requirements. Parameters such as generator power output, rotational speed, and voltage can be adjusted to suit various application needs, making them versatile solutions for different industrial and energy contexts.

Customization:

Greef offers customized Coreless Permanent Magnet Generators (Model Number: GDG) designed and manufactured in Qingdao with CE certification. Our generators feature high efficiency and a multi-poles design with a small air gap, ensuring superior performance and reliability.

We provide a wide range of rated power options from 300W to 100kW to meet diverse application needs. The blade material is made from durable aluminium alloy, and NSK bearings are used to guarantee long-lasting operation. With an insulating resistance of 100Mohm Min (501V DC) and a low start torque of less than 0.03N/M, these generators are engineered for optimal startup and efficiency.

Each unit is carefully packaged using foam and plywooden cases to ensure safe delivery. Our minimum order quantity is 1 set, with prices negotiable to accommodate your specific requirements. Delivery time is approximately 25 working days.

We support flexible payment terms including T/T, Western Union, MoneyGram, and L/C. Contact us today to customize your Coreless Permanent Magnet Generator and benefit from our supply ability and expert service.

Packing and Shipping:

Product Packaging and Shipping

The Coreless Permanent Magnet Generator is carefully packaged to ensure it arrives in perfect condition. Each unit is securely placed in a custom-designed foam insert within a sturdy cardboard box to protect against shocks and vibrations during transit.

For added protection, the box is sealed with tamper-evident tape and labeled with handling instructions such as "Fragile" and "Handle with Care". Multiple boxes are then palletized and shrink-wrapped for bulk shipments to enhance stability and facilitate safe transport.

We offer various shipping options including standard ground, expedited air freight, and international shipping. Tracking information will be provided once the order is dispatched, allowing customers to monitor the delivery status in real-time.

Our logistics partners comply with all relevant safety and shipping regulations to ensure timely and secure delivery of your Coreless Permanent Magnet Generator.