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Home > products > Coreless Permanent Magnet Generator >
Air Cooled Coreless Permanent Magnet Generator with 100Mohm Min Insulating Resistance and Low Start Torque for Industrial Applications

Air Cooled Coreless Permanent Magnet Generator with 100Mohm Min Insulating Resistance and Low Start Torque for Industrial Applications

Air Cooled Coreless Permanent Magnet Generator

100Mohm Min Insulating Resistance Axial Flux Generator

Low Start Torque Permanent Magnet Alternator

Brand Name:

Greef

Certification:

CE

Model Number:

GDG

Contact Us
Request A Quote
Product Details
Corestructure:
Coreless
Frequency:
50/60hz
Rated Voltage:
48v/96v
Generator Material:
Aluminum Alloy
Coolingmethod:
Air Cooled
Insulating Resistance:
100Mohm Min(501V DC)
Speed:
100-500RPM
Rated Power:
500W - 100 KW
Highlight:

Air Cooled Coreless Permanent Magnet Generator

,

100Mohm Min Insulating Resistance Axial Flux Generator

,

Low Start Torque Permanent Magnet Alternator

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,,L/C
Supply Ability
Supply Ability
Product Description
Air Cooled Coreless Permanent Magnet Generator
Product Overview

The GREEF NEW ENERGY GDG Series Disc Type Permanent Magnet Generator features an innovative coreless design with spindle and rotor arranged in a disc shape. The stator remains fixed at the center while the rotor rotates on both sides, utilizing axial air gap magnetic flux for optimal performance.

With its short axial length and large diameter, the generator easily accommodates multi-pole configurations, resulting in high power-to-mass ratio and low-speed rating. Available in both outer rotor and inner rotor variants to suit various installation requirements.

Key Features
  • Low Start Torque: Less than 0.1 N*m with eliminated hysteresis and gear notch effects
  • High Efficiency: >92% efficiency through coreless design and Precise Coil technology
  • Superior Magnet Design: Rare earth permanent magnets with multiple poles and small air gap
  • Maintenance-Free: Gearless direct drive and brushless design for enhanced reliability
  • Extended Lifespan: Eight times longer operational life than traditional generators
  • Optimized Performance: Excellent low wind speed utilization and heat dissipation
Technical Specifications
Parameter Specification
Rated Power 500W - 100 KW
Core Structure Coreless
Phase Type 3
Winding Method Y
Insulating Resistance 100Mohm Min (501V DC)
Rated Voltage 48V / 96V
Cooling Method Air Cooled
Shaft Type Horizontal and Vertical
Frequency 50/60 Hz
Efficiency >92%
Applications
  • Wind Power Generation: Ideal for megawatt-class wind turbines with enhanced output density
  • Renewable Energy Systems: Solar and wind power generation applications
  • Industrial Power Sources: Backup and auxiliary power units for critical equipment
  • Custom Applications: Tailored solutions for specific power, speed, and voltage requirements
Customization Options

GREEF offers customized GDG Series Coreless Permanent Magnet Generators with flexible parameters including power output, rotational speed, and voltage. Constructed with premium aluminum alloy and CE certified for quality assurance.

Order Details: Minimum order quantity 1 set • Negotiable pricing • 25 working days delivery

Payment Methods: T/T, Western Union, , L/C

Packaging: Secure foam and plywood cases for safe transportation

Packaging & Shipping

Each generator is securely packaged in anti-static foam padding within sturdy custom cardboard boxes. Clear labeling and moisture protection ensure safe transit. We partner with reliable logistics providers and provide tracking information for complete shipment visibility.

All international shipping regulations for electronic components are strictly followed to guarantee your generator arrives in perfect condition, ready for immediate installation and use.

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

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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