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High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03N/M) and Axial Flux Design

Brand Name:

Greef

Certification:

Model Number:

GDG

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High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03N/M) and Axial Flux Design

Product Details

Shaft Material:

Steel

Structure:

Inner/Outer Rotor

Generator Shell Material:

Aluminum Alloy

Rotor:

Rare Earth Permanent Magnet

Start Torque:

<0.03N/M

Efficiency:

>92%

Payment & Shipping Terms

Minimum Order Quantity

1Set

Price

Negotiable

Packaging Details

Foam+plywooden Case

Delivery Time

25 Working Days

Payment Terms

T/T,Western Union,MoneyGram,L/C

Supply Ability

High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03 N*m) and Axial Flux Design for Industrial Applications

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High Efficiency >92% Coreless Permanent Magnet Generator with Low Start Torque <0.03N/M and Coreless Wire Coil Stator

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High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03N/M) and Rare Earth Permanent Magnet for Industrial Applications

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High Efficiency Coreless Permanent Magnet Generator with Aluminum Alloy Shell and Low Noise Operation for Microgrid Systems

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Product Description

GDG Series Disc-Type Permanent Magnet Generator

The GDG series disc-type permanent magnet generator, produced by GREEF NEW ENERGY, features a unique design without an iron core. In this generator, the spindle and rotor are arranged in a stacked disc shape, with the stator fixed at the center and rotors positioned on both sides, rotating around it. Notably, the spindle contains only windings and does not include an iron core.

Both the stator and rotor adopt a flat disc structure, utilizing an axial air gap magnetic flux. They are alternately arranged along the axial direction. Thanks to the short axial length and large diameter of the disc generator, it allows for an easy implementation of a multi-pole configuration. This design results in a high power-to-mass ratio and supports low-speed operation, enabling the generator to start efficiently at low wind speeds.

Additionally, the GDG disc-type generators are characterized by their compact size, low energy consumption, lightweight, and robust structure, which contribute to their high efficiency. These attributes make it an ideal choice for direct-drive vertical axis wind turbines, as the rotor's placement minimizes resistance against the wind.

The series includes two main variants: the outer rotor and the inner rotor types. In the outer rotor version, the shaft remains stationary while the casing rotates, with cables routed through the middle of the shaft. Conversely, the inner rotor type features a fixed casing with the shaft rotating, and the cables are discharged from outside the casing.

Key Features

Low Start Torque Technology: The absence of hysteresis and gear notches results in an extremely low starting torque of less than 0.1 N*m, allowing for smoother and more efficient initial movement.
High Efficiency: By eliminating the core, mechanical resistance and energy loss are significantly reduced. The implementation of "Precise Coil" technology further optimizes performance.
Advanced Magnet Design: Utilizing rare earth permanent magnets with multiple poles, a small air gap, and high power density, the system delivers substantial output power.
Gearless Direct Drive and Maintenance-Free Operation: The gearless direct drive, combined with a brushless design, ensures maintenance-free operation and enhances overall reliability.
Higher Reliability and Extended Lifespan: The special structural design increases the ratio of power to volume and power to weight, resulting in a lifespan that is eight times longer than traditional generators.
Improved Performance in Low Wind Speeds: This technology allows for higher utilization of wind turbines even under low wind speed conditions, expanding operational capabilities.
Excellent Heat Dissipation: The aluminum alloy outer frame and unique internal structure enable excellent heat dissipation, ensuring stable operation and longevity.

Technical Parameters

Parameter	Specification
Phase Type	3 Phase
Efficiency	>92%
Mounting Type	Flange Or Foot Mounted
Stator	Coreless Wire Coil
Generator Shell Material	Aluminum Alloy
Noise Level	Low Noise Operation
Winding Method	Y
Power	0.2-100 KW
Rotor	Rare Earth Permanent Magnet
Structure	Inner/Outer Rotor

Applications

Wind Power Generation: Particularly advantageous in megawatt-class wind turbines, where their use substantially enhances output density and overall efficiency of wind energy production.
Renewable Energy Applications: Widely utilized in various renewable energy applications, including solar power generation systems, offering efficient energy conversion with dependable performance.
Other Industrial Uses: Valuable in several industrial sectors as lightweight, reliable, and efficient power supply solutions for backup or auxiliary power sources.
Customized Solutions: Flexible design allows for extensive customization of power output, operating speed, and output voltage to suit diverse industrial and renewable energy needs.

Customization Services

Greef's Coreless Permanent Magnet Generator (Model Number: GDG) offers exceptional product customization services to meet your specific requirements. Manufactured in Qingdao and certified with CE, this generator features a coreless wire coil stator and a steel shaft, ensuring durability and high efficiency of over 92%.

We provide flexible customization options, allowing you to tailor the generator to your exact needs, whether in terms of power capacity, dimensions, or other specifications. Our minimum order quantity is just 1 set, and pricing is negotiable to accommodate your project scale.

Payment terms include T/T, Western Union, MoneyGram, and L/C, supporting convenient and secure transactions. Trust Greef for reliable supply ability and expert customization of coreless permanent magnet generators designed to optimize efficiency and power density for your applications.

Packing and Shipping

Our Coreless Permanent Magnet Generator is carefully packaged to ensure it arrives in perfect condition. Each unit is securely placed in a custom-fitted foam insert within a sturdy, double-walled cardboard box to protect against impacts during transit.

All packaging materials are chosen to provide excellent cushioning while minimizing environmental impact, using recyclable and biodegradable components wherever possible.

For shipping, we offer multiple options including standard, expedited, and freight services to meet your delivery requirements. Each shipment is tracked with a unique tracking number, providing you with real-time updates on your order status.

Before dispatch, every generator undergoes thorough quality inspections to guarantee optimal performance and reliability upon arrival.

If you have any special packaging or shipping requests, please contact our customer service team, and we will do our best to accommodate your needs.

Ratings& Review

Overall Rating

5.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

100%

4 stars

3 stars

2 stars

1 stars

All Reviews

L*s

Czech Republic May 4.2023

Helpful (4)

“I built a small pico hydro system on the creek behind my off-grid cabin. The water head is only 3 meters and flow rate around 0.2 m³/s – too low for most generators. This axial flux coreless unit starts generating usable power at just 150 RPM. No cogging, no iron loss, and it’s silent. I’m getting 300-400W continuously, 24/7. My old induction generator would barely light an LED at that speed. Absolutely perfect for low-head hydro.”

Tags：

Coreless Permanent Magnet Generator with Low Start Torque High Efficiency and Low Noise Operation for Precision Equipment

Get Best Price

High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03 N*m) and Axial Flux Design for Industrial Applications

Get Best Price

High Efficiency >92% Coreless Permanent Magnet Generator with Low Start Torque <0.03N/M and Coreless Wire Coil Stator

Get Best Price

High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03N/M) and Rare Earth Permanent Magnet for Industrial Applications

Get Best Price

High Efficiency Coreless Permanent Magnet Generator with Aluminum Alloy Shell and Low Noise Operation for Microgrid Systems

Get Best Price

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Qingdao Greef New Energy Equipment Co., Ltd

High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03N/M) and Axial Flux Design

High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03 N*m) and Axial Flux Design for Industrial Applications

High Efficiency >92% Coreless Permanent Magnet Generator with Low Start Torque <0.03N/M and Coreless Wire Coil Stator

High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03N/M) and Rare Earth Permanent Magnet for Industrial Applications

High Efficiency Coreless Permanent Magnet Generator with Aluminum Alloy Shell and Low Noise Operation for Microgrid Systems

Overall Rating

Rating Snapshot

All Reviews

low speed dc generator

low rpm wind generator

magnetic energy generator

Coreless Permanent Magnet Generator with Low Start Torque High Efficiency and Low Noise Operation for Precision Equipment

High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03 N*m) and Axial Flux Design for Industrial Applications

High Efficiency >92% Coreless Permanent Magnet Generator with Low Start Torque <0.03N/M and Coreless Wire Coil Stator

High Efficiency (>92%) Coreless Permanent Magnet Generator with Low Start Torque (<0.03N/M) and Rare Earth Permanent Magnet for Industrial Applications

High Efficiency Coreless Permanent Magnet Generator with Aluminum Alloy Shell and Low Noise Operation for Microgrid Systems