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Home > Products > Coreless Permanent Magnet Generator >
3 Phase Coreless Permanent Magnet Generator 12-450V Voltage Range Outer Rotor Structure

3 Phase Coreless Permanent Magnet Generator 12-450V Voltage Range Outer Rotor Structure

3 Phase Coreless Permanent Magnet Generator

12-450V Coreless Permanent Magnet Generator

3 Phase coreless generator

Place of Origin:

Qingdao

Brand Name:

Greef

Certification:

CE

Model Number:

GDG

Contact Us
Request A Quote
Product Details
Structure:
Outer Rotor/inner Rotor
Generator Type:
3 Phase AC Permanent Magnet
Speed:
100-500RPM
Start Torque:
<1 N/M
Poles:
16-20
Voltage Range:
12-450V
Phase Type:
3
Generator Material:
Aluminum Alloy
Highlight:

3 Phase Coreless Permanent Magnet Generator

,

12-450V Coreless Permanent Magnet Generator

,

3 Phase coreless generator

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
Supply Ability
Product Description

Product Description:

Axial Flux Ironless Core Generator

The axial flux ironless core generator is a type of generator that utilizes an axial flux design and an ironless core structure. It differs from conventional generators in that it avoids iron core losses and hysteresis losses. Instead, it generates electricity by utilizing axial magnetic flux.

The structure of an axial flux ironless core generator typically consists of permanent magnets, coils, and casing. The permanent magnets generate the magnetic field, while the coils capture the energy in the magnetic field and convert it into electrical energy. The casing is used to protect the internal structure of the generator and provide it with sturdy support.

The principle of operation for an axial flux coreless generator is based on the principle of electromagnetic induction. When the magnetic field generated by a permanent magnet moves relative to a conductor in a coil, an induced electromotive force is generated in the conductor. This electromotive force can then be converted into electrical energy, providing power to external devices.

 

Applications:

Wind power generation has great potential with the use of axial flux coreless generators. These generators are particularly effective in megawatt-class wind turbines, as they can significantly increase output density and enhance the efficiency of wind power generation. Due to the absence of an iron core, these generators demonstrate reduced iron losses and hysteresis losses, ultimately making them more efficient.

Axial flux coreless generators have a wide range of applications in renewable energy, including solar and wind power generation systems. These generators are highly efficient in energy conversion and reliable in operation, making them ideal for renewable energy generation systems.

The axial flux coreless generator is also suitable for use in other industrial applications that require an efficient, lightweight and reliable power supply. As an example, it can be employed as a backup or auxiliary power source to offer stable power support for industrial equipment.

The flexibility of the axial flux ironless core generator means that it can be customized based on customers’ specific needs. It allows for the adjustment of various parameters, such as generator power, speed, and output voltage to meet the requirements of various application scenarios.

 

Customization:

The GDG Coreless Permanent Magnet Generator comes with multi-poles ranging from 16-20 and voltage range of 12-450V. The protection grade is IP 54 and it has a speed range of 100-500RPM. You can choose between an outer-rotor or inner-rotor structure to suit your requirements.

GREEF DDG series generator have following features:

 

Low rated rotate speed, Low start wind speed, Low weight and small size, low High efficiency

 

(1) Torque Patent Technology: use newest “Precise Coil” technology. No hysteresis and gear notches effect make the start torque very low <1N.M

 

(2) Original Structure: use disc coreless motor to take place traditional motor makes it less volume and weight.

 

(3) Higher Utilization: use special coreless motor technology to eliminate the use bottlenecks of lower speed wind energy.

 

(4) Higher Reliability: special structure make it bigger ratio of power to volume, power to weight and have long life of 8 times longer than traditional motor.

 

(5) Gearless, direct drive, low RPM generator.

 

(6) High standard, quality components for use in harsh and extreme environments for wind turbines

 

(7) High efficiency and Low mechanical resistance energy loss

 

(8) Excellent heat dissipation due to the Aluminum alloy outer frame and special internal structure.

 

Technical Data

 

Model GDG-0.5KW-200 GDG-1KW-180 GDG-1KW-200 GDG-2KW-120 GDG-2KW-180
Rated Power 0.5KW 1KW 1KW 2KW 2KW
Rated Rotate Speed 200 RPM 180RPM 200RPM 120RPM 180RPM
Rated Voltage 56VAC 56VAC 56VAC 115VAC 115VAC
Rated Current 9A 12A 17.9A 10A 17.4A
Efficiency >85%
Wending Method Y
Insulating Resistance 100Mohm Min(500V DC)
Leakage Level <5 ma
Start Torque <0.1N/M <0.3 N/M <0.3 N/M <0.5 N/M <0.3 N/M
Phase Type 3 Phase
Structure Out rotor
Stator Coreless wire coil
Rotor Rare Earth Permanent Magnet
Generator Shell Diameter 320 380 380 550 450
Generator Shell Length 232 241 241 330 258
Weight 20 32 32 75 51
Shaft drameter 45 50 50 78 59
Generator shell material Aluminum alloy
Shaft material Carbon steel
Bearing Deep groove ball bearing

 

 

 

Model GDG-3KW-100 GDG-3KW-180 GDG-5KW-100 GDG-5KW-150 GDG-10KW-100
Rated Power 3KW 3KW 5KW 6KW 10KW
Rated Rotate Speed 100RPM 180RPM 100RPM 150RPM 100RPM
Rated Voltage 380VAC 380VAC 380VAC 380VAC 400VAC
Rated Current 4.6 4.7 7.6 15.2 14.5
Efficiency >85% >85% >88% >88% >88%
Wending Method Y Y Y Y Y
Insulating Resistance 100Mohm Min(500V DC) 100Mohm Min(500V DC) 100Mohm Min(500V DC) 100Mohm Min(500V DC) 100Mohm Min(501V DC)
Leakage Level <5 ma <5 ma <5 ma <5 ma <5 ma
Start Torque <1 N/M <0.5 N/M <0.5 N/M <1 N/M <1N/M
Phase Type 3 Phase 3 Phase 3 Phase 3 Phase 3 Phase
Structure Out rotor Out rotor Out rotor Out rotor Out rotor
Stator Coreless wire coil Coreless wire coil Coreless wire coil Coreless wire coil Coreless wire coil
Rotor Rare Earth Permanent Magnet Rare Earth Permanent Magnet Rare Earth Permanent Magnet Rare Earth Permanent Magnet Rare Earth Permanent Magnet
Generator Shell Diameter 620 550 700 620 770
Generator Shell Length 410 330 400 410 590
Weight 110 65 125 110 245
Shaft drameter 80 78 98 80 85
Generator shell material Aluminum alloy Aluminum alloy Aluminum alloy Aluminum alloy Aluminum alloy
Shaft material Carbon steel Carbon steel Carbon steel Carbon steel Carbon steel
Bearing Deep groove ball bearing Deep groove ball bearing Deep groove ball bearing Deep groove ball bearing Deep groove ball bearing

 

Drawing Sample

 

 

3 Phase Coreless Permanent Magnet Generator 12-450V Voltage Range Outer Rotor Structure 0

3 Phase Coreless Permanent Magnet Generator 12-450V Voltage Range Outer Rotor Structure 1

 

Pictures

3 Phase Coreless Permanent Magnet Generator 12-450V Voltage Range Outer Rotor Structure 2

3 Phase Coreless Permanent Magnet Generator 12-450V Voltage Range Outer Rotor Structure 3

 
Packaging & Shipping

1. Generator use inner foam protection outer Plywooden case .Generator shaft use pipe protection.

2.Pakage size and weight please refer to our sales.

3.Shipping by sea with FCL LCL or by air .

If you have any request in package and shipping please tell our sales we will do according to your request.

3 Phase Coreless Permanent Magnet Generator 12-450V Voltage Range Outer Rotor Structure 4

 

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
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

B
B*n
Sweden Oct 17.2025
My farm is 30 kilometers from town, and connecting to the power grid would cost a fortune. Three years ago, I installed a solar panel system with a battery bank. It was sufficient during spring, summer, and fall, but in winter, we often had a week of consecutive overcast days—and the batteries would run out in just three days. Last year, I decided to add a variable-pitch wind turbine, connected it to the AC coupling port of the Deye inverter, and set up a hybrid solar-wind system. Throughout the entire winter, the battery level never dropped below 45%, and I never had to work in the dark again. The Deye app allows me to monitor both the solar and wind turbine data simultaneously, and the transition between them is so smooth it’s almost imperceptible. Relying solely on solar power during winter on a Nordic farm is a gamble. Only by combining a variable-pitch wind turbine with a Deye inverter—creating a wind-solar hybrid system—can you get through the winter with peace of mind.
E
E*c
France Jul 17.2025
Since installing this variable-pitch wind turbine, the battery hasn’t run low again. Before, I used to worry whenever we had consecutive overcast days and light winds in the winter, but now it can even charge the battery in low winds. Best of all, it doesn’t suddenly start screeching during gusts, so it doesn’t disturb my family’s sleep. The installer also mentioned that variable-pitch turbines are easier to calibrate than fixed-pitch ones. I give it five stars!
J
J*n
Norway Apr 8.2024
I run a small dairy farm in northern Norway, far from the power grid. A few years ago, I installed solar panels and a Deye inverter, but the solar system basically stops working in winter, and the diesel generator was costing me a fortune. This year, I added this variable-pitch wind turbine and connected it to the Deye inverter for a hybrid solar-wind system, and we haven’t had a single power outage all winter. This wind turbine starts up at low wind speeds of just 2–3 on the Beaufort scale. During blizzards, the blades automatically pitch down to slow the turbine, preventing runaway speeds, and it’s much quieter than my neighbor’s fixed-pitch model. The Deye inverter’s switching logic is smart—it prioritizes solar power when available, and automatically switches to the wind turbine when solar output drops. It’s all clearly visible on the app. Now, the diesel generator is practically idle. Wind and solar backing each other up—that’s true off-grid freedom.

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