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Coreless Permanent Magnet Generator with Low Start Torque Maintenance-Free Design for 50/60HZ Frequency

Merknaam:

Greef

Certificering:

Model Number:

GDG

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Productgegevens

Montagetype:

Flens- of voetmontage

Materiaal van de generatorshell:

Aluminiumlegering

Begintorsie:

< 0,03 N/M

Structuur:

Uit/binnenrotor

Fasetype:

3 Fase

Frequentie:

50/60 Hz

Roteer snelheid:

Aangepast

Onderhoud:

Onderhoudsvrij

Betaling en verzendvoorwaarden

Minimum Order Quantity

1Set

Prijs

Bespreekbaar

Packaging Details

Foam+plywooden Case

Delivery Time

25 Working Days

Betalingscondities

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

Supply Ability

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Productbeschrijving

Horizontal and Vertical Shaft Type Coreless Permanent Magnet Generator

Product Overview

The GREEF New Energy GDG series features a disc-type permanent magnet generator that operates without an iron core. This innovative design consists of a spindle and rotor arranged in a disc shape, where the stator is fixed in the center and the rotor rotates on both sides. Notably, the spindle contains only windings and completely lacks an iron core.

Both the stator and rotor are constructed as flat disc structures utilizing axial air gap magnetic flux. They are alternately positioned along the axial direction, which contributes to the generator's unique performance characteristics. Thanks to its short axial length combined with a large diameter, the disc generator can easily accommodate a multi-pole configuration.

This generator design boasts several advantages, including a high power-to-mass ratio, low rated speed, the ability to start at low wind speeds, compact size, reduced energy consumption, lightweight construction, and high efficiency. These features make it an excellent choice for direct-drive vertical axis wind turbines, particularly because of its minimal wind resistance caused by the rotor mounted on the vertical axis.

The GDG series disc-type permanent magnet generators come in two variants: outer rotor and inner rotor types. In the outer rotor design, the shaft does not rotate the casing, and the cable is routed through the center of the shaft. Conversely, in the inner rotor variant, the casing remains stationary while the shaft rotates, with the cable routed outside the casing.

Key Features

Low Start Torque Technology: Advanced technology eliminates hysteresis and gear notch effects, resulting in exceptionally low starting torque of less than 0.1 N*m for smooth and efficient startup performance.
High Efficiency Design: Coreless design significantly reduces mechanical resistance and energy loss, enhanced by "Precise Coil" technology for improved overall system efficiency.
Powerful Magnetic System: Equipped with rare earth permanent magnets featuring multiple poles and small air gap, achieving high power density and substantial output power.
Gearless Direct Drive and Maintenance-Free: Brushless configuration with gearless direct drive system ensures reliable operation with minimal maintenance requirements.
Enhanced Reliability and Longevity: Special structural design provides larger ratio of power to volume and power to weight, resulting in approximately eight times longer lifespan than traditional generators.
Optimal Performance in Low Wind Speeds: Technology allows greater utilization of wind turbines under low wind speed conditions, improving overall energy capture and efficiency.
Excellent Heat Dissipation: Aluminum alloy outer frame and specially designed internal structure effectively dissipate heat, contributing to stable operation and durability.

Applications

Wind Power Generation: Particularly advantageous for megawatt-class wind turbines, enhancing power output density and overall efficiency in converting wind energy to electrical power.
Renewable Energy Systems: Widely applied in solar power generation and other renewable energy systems due to efficient energy conversion and dependable operation.
Industrial Applications: Suitable for various industrial applications requiring efficient, lightweight, and dependable power supply, including backup or auxiliary power sources.
Custom Solutions: Flexible design allows customization of generator power, operational speed, and output voltage to accommodate specific application requirements.

Customization Options

Greef offers comprehensive product customization services for our Coreless Permanent Magnet Generator, model GDG. With CE certification, this inner-rotor generator is designed for higher reliability and features a small air gap to enhance performance and efficiency.

We provide flexible options including flange or foot mounting types, customizable rated voltage, and shaft configurations (both horizontal and vertical) made from durable steel. Our generators are maintenance-free, ensuring long-term, hassle-free operation.

Specification	Details
Packaging	Foam and plywooden cases for safe delivery
Minimum Order	1 set
Pricing	Negotiable
Delivery Time	25 working days
Payment Terms	T/T, Western Union, MoneyGram, L/C

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-designed foam insert within a sturdy cardboard box to prevent any movement or damage during transit.

The packaging materials are selected to provide excellent protection while being environmentally friendly and recyclable. We offer multiple shipping options including standard ground shipping, expedited air freight, and international delivery services.

All shipments are tracked and insured to guarantee safe and timely delivery. Customers receive tracking numbers once orders are dispatched. For bulk orders, we provide palletized shipping with reinforced packaging for maximum protection during handling and transportation.

Beoordelingen en recensie

Algemene Beoordeling

5.0

Gebaseerd op 50 beoordelingen voor deze leverancier

Beoordelingsmomentopname

Het volgende is de verdeling van alle beoordelingen

5 sterren

100%

4 sterren

3 sterren

2 sterren

1 sterren

Alle recensies

L*s

Czech Republic May 4.2023

Het is nuttig. (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.”

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