20-3000RRM Rated Rotor Speed 3 Phase AC Permanent Magnet Generator with IP54 Protection and Fan Cooling
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Product Description
20-3000RRM Rated Rotor Speed 3 Phase AC Permanent Magnet Generator
Product Overview
The fundamental concept behind a permanent magnet generator is that its rotor contains permanent magnets that create a steady magnetic field. This magnetic field remains constant because it is produced by these materials rather than by an electromagnet.
When the rotor is set in motion by a prime mover, such as a wind turbine, water turbine, or engine, the magnetic field rotates along with it. As this rotating magnetic field passes through the conductors located in the stator windings, it induces an electromotive force within those windings based on the law of electromagnetic induction.
By connecting an external electrical circuit to the stator windings, the induced electromotive force can drive a current, thereby generating usable electrical power. This allows the permanent magnet generator to convert mechanical energy from the prime mover directly into electrical energy efficiently.
Key Features
- Direct drive design with simple structure, no gear-box required, and brushless technology for enhanced efficiency and reliability
- Exceptional efficiency greater than 95% with power factor close to 1 for optimal energy savings and stable operation
- Incorporates Nd-Fe-B permanent magnets supporting both clockwise and anticlockwise rotations for versatile applications
- Capable of generating high voltage and power even at low speeds for consistent output under varying conditions
- Designed for durability with over 20-year lifetime and continuous 24/7/365 operation capability
- Customizable voltage, speed, power, frequency, and other parameters to meet specific requirements
- 3-year free warranty with lifelong service support for customer satisfaction and long-term reliability
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Power | 0.5 to 5000 kW |
| Rated Rotational Speed | 20 to 3000 rpm |
| Frequency Range | 50 to 60 Hz |
| Number of Poles | 2 to 48 poles |
| Generator Type | Three-phase AC synchronous generator |
| Magnet Type | NdFeB magnets |
| Winding Method | Y winding method |
| Maximum Magnet Temperature | 120℃ |
| Maximum Winding Temperature | 180℃ |
| Efficiency | > 95% |
| Insulation Grade | H |
| Insulating Resistance | ≥ 100 Mohm at 500 Vdc |
| Protection Rating | IP54 |
| Shell Material | Cast iron |
| Winding Material | 100% copper |
| Shaft Material | Steel |
| Iron Core Material | Cold-rolled silicon steel sheets |
| Bearings | SKF brand |
| Cooling Method | Fan cooling |
| Weight | Approximately 1200 kg (net/gross) |
| Installation | Horizontal or vertical |
Applications
- Wind Power Generation: Core components in direct-drive and semi-direct-drive wind turbines with superior efficiency under variable-speed conditions
- Marine and Offshore: Ship shaft generators and main/auxiliary power systems with high reliability and low maintenance requirements
- Backup Power Systems: Integrated into diesel and gas generator sets for emergency/standby power with quick response and stable voltage
- High-Speed Applications: Microturbines and flywheel energy storage systems operating efficiently at high rotational speeds
- Industrial Settings: Specialized applications requiring high power density and maximum reliability
Customization Options
Greef offers customized Permanent Magnet Generator solutions designed to meet your specific requirements. Our GDF model, originating from China and certified with CE, is a high-efficiency (>95%) water turbine electric generator ideal for low speed applications.
Featuring a robust NdFeB magnet type and fan cooling method, this generator ensures reliable performance in both horizontal and vertical installations. With an IP67 rating, the Greef Permanent Magnet Generator is well-protected against dust and water ingress, making it perfect for FREE ENERGY projects involving water turbines.
Each unit is carefully packaged using foam and plywooden cases to guarantee safe delivery within 25 working days. We accept minimum orders of 1 set, with pricing negotiable to suit your project needs. Payment terms are flexible via T/T.
Packaging and Shipping
Our Permanent Magnet Generator is carefully packaged to ensure it arrives safely and in perfect working condition. Each unit is securely wrapped with protective materials to prevent damage during transit. The generator is then placed in a sturdy, custom-designed box that provides additional cushioning and support.
For added protection, the package is reinforced with foam inserts and shock-absorbing materials to safeguard against impacts and vibrations. All packaging materials used are environmentally friendly and recyclable.
We offer multiple shipping options to meet your needs, including standard, expedited, and freight shipping. Each shipment is tracked from our warehouse to your delivery address, ensuring timely and reliable delivery. Our logistics partners are experienced in handling delicate and heavy equipment, guaranteeing that your Permanent Magnet Generator arrives on schedule and in excellent condition.
Please ensure that the delivery location is accessible for the size and weight of the generator. Upon receipt, inspect the package for any visible damage and report any issues immediately to our customer service team.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Qingdao Greef New Energy Equipment Co., Ltd
Location
2-111, NO.6 CHANGCHENG NANROAD,CHENGYANG DISTRICT, QINGDAO, CHINA
Contact Person
Christina Lei