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Qingdao Greef New Energy Equipment Co., Ltd
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High Efficiency Permanent Magnet Generator with Low RPM and IP54 Protection for Stable Power Output

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Qingdao Greef New Energy Equipment Co., Ltd

City: qingdao

Province/State:shandong

Country/Region:china

Tel:86-532-67731422

Contact Person:
Ms.Christina Lei
View Contact Details

High Efficiency Permanent Magnet Generator with Low RPM and IP54 Protection for Stable Power Output

Brand Name Greef
Model Number GDF
Place Of Origin China
Certification CE
Minimum Order Quantity 1 Set
Price Negotiable
Packaging Details Foam+plywooden Case
Delivery Time 25 Working Days
Payment Terms T/T
Current Type AC
Pole 2-48
Installation Horizontal/Vertical
Rated Rotor Speed 20-3000RRM
Rated Rotate Speed 20rpm-3000rpm
Portection Grade IP 54
Effienciency >95%
Magnet type NdFeB
Detailed Product Description
Fan Cooling Low Speed Motor with Y Winding Material

The fundamental concept behind a permanent magnet generator lies in the rotor being equipped with permanent magnet materials, which produce a steady magnetic field. This constant magnetic field is a key aspect that distinguishes permanent magnet generators from other types of generators.

When a prime mover, such as a wind turbine, water turbine, or engine, causes the rotor to spin, the magnetic field created by the permanent magnets rotates as well. As this magnetic field moves, it intersects with the conductors wound around the stator.

Based on the law of electromagnetic induction, the movement of the magnetic field through the stator windings induces an electromotive force (EMF). When an external electrical circuit is connected to the generator, this induced EMF enables the conversion of mechanical energy into usable electrical energy, which can then be supplied to power various devices or systems.

Key Features
  • Direct drive system with simple design, no gearbox required, utilizing brushless technology
  • High efficiency exceeding 95% with power factor nearly equal to 1
  • Incorporates Nd-Fe-B permanent magnets with bidirectional operation capability
  • Generates high voltage and power even at low speeds
  • Long lifespan exceeding 20 years with 24/7 continuous operation capability
  • Customizable voltage, speed, power, frequency, and other parameters
  • 3-year free warranty with lifetime service support
Technical Specifications
ParameterSpecification
Rated Power0.5 kW to 5000 kW
Rated Speed20 rpm to 3000 rpm
Frequency50 to 60 Hz
Generator Type3-phase AC synchronous with NdFeB magnets
Poles2 to 48 (customizable)
Winding ConfigurationY-configuration
Magnet TemperatureUp to 120℃
Winding TemperatureUp to 180℃
Efficiency> 95%
Insulation ClassClass H
Insulation Resistance≥ 100 MΩ at 500 V DC
Protection ClassIP54
Shell MaterialCast iron
Winding Material100% copper
Shaft MaterialSteel
Iron Core MaterialCold rolled silicon steel sheets
BearingsSKF
Cooling SystemFan cooling
Net WeightApproximately 1200 kg
InstallationHorizontal or vertical
Applications

Permanent Magnet Generators (PMGs) are widely recognized for their exceptional efficiency, reliability, and compact design. These qualities make them the preferred choice for power generation across various modern industrial sectors.

  • Wind Power Generation: Core component in direct-drive and semi-direct-drive wind turbines
  • Marine and Offshore: Ship shaft generators and main/auxiliary power systems
  • Backup Power Systems: Diesel and gas generator sets for emergency power
  • High-Speed Applications: Microturbines and flywheel energy storage systems
  • Industrial Applications: Special-purpose uses requiring high power density and reliability
Customization Options

Greef offers customized Permanent Magnet Generator solutions under model number GDF, designed to meet specific requirements. Our generators are CE certified and available with a minimum order quantity of 1 set.

  • High-quality NdFeB magnets for efficient FREE ENERGY generation
  • Horizontal or vertical installation options
  • Rated speed: 20rpm to 3000rpm
  • Three phase AC current type
  • Fan cooling method
  • Secure packaging with foam and plywood cases
  • Delivery time: 25 working days
  • Negotiable pricing with T/T payment terms
Packaging and Shipping

Our Permanent Magnet Generators are carefully packaged to ensure safe arrival and perfect working condition. Each unit is securely wrapped with protective materials and placed in sturdy, custom-designed cardboard boxes with foam inserts or molded pulp for shock absorption.

All external packaging is clearly labeled with handling instructions including "Fragile" and "This Side Up" markings. We offer multiple shipping options including air freight, sea freight, and express courier services through reliable carriers.

Before shipment, each generator undergoes final quality inspection and includes packing list and user manual. Tracking information is provided upon dispatch for real-time delivery monitoring.

For special packaging or shipping requirements, please contact our customer service team for customized solutions.

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