High Efficiency Permanent Magnet Generator with Low RPM and IP54 Protection for Stable Power Output
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.
- 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
| Parameter | Specification |
|---|---|
| Rated Power | 0.5 kW to 5000 kW |
| Rated Speed | 20 rpm to 3000 rpm |
| Frequency | 50 to 60 Hz |
| Generator Type | 3-phase AC synchronous with NdFeB magnets |
| Poles | 2 to 48 (customizable) |
| Winding Configuration | Y-configuration |
| Magnet Temperature | Up to 120℃ |
| Winding Temperature | Up to 180℃ |
| Efficiency | > 95% |
| Insulation Class | Class H |
| Insulation Resistance | ≥ 100 MΩ at 500 V DC |
| Protection Class | IP54 |
| Shell Material | Cast iron |
| Winding Material | 100% copper |
| Shaft Material | Steel |
| Iron Core Material | Cold rolled silicon steel sheets |
| Bearings | SKF |
| Cooling System | Fan cooling |
| Net Weight | Approximately 1200 kg |
| Installation | Horizontal or vertical |
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
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
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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Have questions about our products or want to discuss a custom order? Our team is ready to help you.