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Home > Products > Permanent Magnet Alternator >
3KW Low Rpm Permanent Magnet Alternator Low Start Torque Vertical Wind Generator

3KW Low Rpm Permanent Magnet Alternator Low Start Torque Vertical Wind Generator

3KW Permanent Magnet Alternator

Low Torque Permanent Magnet Alternator

3KW Vertical Wind Generator

Place of Origin:

QINGDAO

Brand Name:

GREEF

Certification:

CE

Model Number:

GDG

Contact Us
Request A Quote
Product Details
Type:
Wind Power Generator,50kw To 500KW Permanent Magnet Alternator
Rated Power:
300w-30kw
Rated Voltage:
12V / 24V / 48V
Generator Type:
3 Phase AC Permanent-magnet,Three Phase AC Permanent Magnet Synchronous Generator
Application:
Electricity Generation
Warranty:
3 Years
Portection Grade:
IP 54
Color:
Multicolor
Size:
Customized Magnet Size
Generator Material:
100% Copper Wire+Nd-Fe-B
Generator:
3-Phase Permanent Magnet Generator AC Alternator
Highlight:

3KW Permanent Magnet Alternator

,

Low Torque Permanent Magnet Alternator

,

3KW Vertical Wind Generator

Payment & Shipping Terms
Minimum Order Quantity
1
Price
$299-12999
Packaging Details
Inner Foam + Plywooden case
Delivery Time
25DAY
Payment Terms
L/C, D/A, D/P, Western Union, MoneyGram
Supply Ability
100 Units
Product Description
Low RPM 3KW Permanent Magnet Generator
 
Product Description

 

GreeF company supply modified kinds of Coreless Disk Permanent Magnet Generator main model as follow:

 

GDG-1KW 180RPM

GDG-1KW 200RPM

GDG-2KW 120RPM

GDG-2KW 180 RPM

GDG-3KW 100RPM

GDG-3KW 160RPM

GDG-5KW 100RPM

GDG-5KW 100RPM

GDG-10KW 100RPM

 

They are always being used in vertical axis wind turbine, and other generator system which requests very low start torque and low RPM.

 

 

 

Advantage

 

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.

3KW Low Rpm Permanent Magnet Alternator Low Start Torque Vertical Wind Generator 0

 

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

 

 

3KW Low Rpm Permanent Magnet Alternator Low Start Torque Vertical Wind Generator 1

3KW Low Rpm Permanent Magnet Alternator Low Start Torque Vertical Wind Generator 2

 

Pictures

3KW Low Rpm Permanent Magnet Alternator Low Start Torque Vertical Wind Generator 3

3KW Low Rpm Permanent Magnet Alternator Low Start Torque Vertical Wind Generator 4

 
Packaging & Shipping

1. Low RPM 3kw permanent magnet 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.

3KW Low Rpm Permanent Magnet Alternator Low Start Torque Vertical Wind Generator 5

 

 

 
Our Services

OEM service

 

Generators are free 3 years warranty, All lifelong technical support and part cost supply.

 

(1) The warranty period is start from the date of shipment which show on the bill of loading or air waybill.
(2) Free maintenance services during the warranty period the cost involved be borne by the company, do not charge a fee to customers, free warranty if any damage outside the warranty period, the company will charge a fee for labor costs and materials.
(3) the warranty period, company's quality problems caused by the maintenance of the freight borne by the company, if not under warranty or man-made damage, the freight charges by the customer.

 

 

Company Information

 

3KW Low Rpm Permanent Magnet Alternator Low Start Torque Vertical Wind Generator 6

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*v
Uzbekistan Apr 15.2026
This canal flows day and night – I never thought it could make money. After Greef installed the system, it runs by itself. Every day I check my phone to see how much electricity was generated and how much I earned. I'll recover my investment in less than a year, and after that it's pure profit.
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.
L
L*s
Czech Republic May 4.2023
“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.”

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