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China Suppliers Factory Coreless Permanent Magnet Generator for Low RPM Vertical Axis Wind Turbines 0.5kW-10kW
Key Advantages
Ultra-Low Starting Torque
Eliminates hysteresis and gear notch effects, achieving starting torque < 0.1 N·m for effortless operation.
High Efficiency
Coreless design minimizes mechanical resistance, reducing energy loss during conversion.
Precise Coil Technology
Optimized electromagnetic performance ensures stable power generation across all RPM ranges.
Advanced Magnetic Design
Rare-earth permanent magnets with multi-pole configuration provide high power density and output.
Maintenance-Free Operation
Gearless direct-drive and brushless design eliminate wear-prone components for long-term reliability.
Enhanced Durability
Compact structure delivers superior power-to-volume/weight ratios with 8× longer lifespan vs. traditional generators.
Low-Wind Optimization
Maximizes energy utilization in wind speeds as low as 3 m/s, extending operational range.
Thermal Efficiency
Aluminum alloy casing and internal heat dissipation design ensure stable performance under load.
This generator is ideal for renewable energy applications requiring high efficiency, low maintenance, and reliable performance in varying conditions.
Product Features
| No. | Feature Description |
|---|---|
| 1 | Torque Patent Technology: use newest “Precise Coil” technology. No hysteresis and gear notches effect make the start torque very low <0.3N.M |
| 2 | Original Structure: use disc coreless motor to take place traditional motor makes it less volume and weight. |
| 3 | Higher Utilization: use special coreless motor technology to eliminate the use bottlenecks of lower speed wind energy. |
| 4 | Higher Reliability: special structure make it bigger ratio of power to volume, power to weight and have long life of 8 times longer than traditional motor. |
| 5 | Gearless, direct drive, low RPM generator. |
| 6 | High standard, quality components for use in harsh and extreme environments for wind turbines |
| 7 | High efficiency and Low mechanical resistance energy loss |
| 8 | Excellent heat dissipation due to the Aluminum alloy outer frame and special internal structure. |
| 9 | Customized : Voltage, Speed, Power, Frequency etc. |
| 10 | H class insulation, vacuum pressure impregnation. |
| 11 | Excellent heat dissipation , also can add fan cooling |
Specification
| Model | GDG-0.5KW-200 | GDG-1KW-180 | GDG-1KW-200 | GDG-2KW-120 | GDG-2KW-180 |
|---|---|---|---|---|---|
| Rated Power | 0.5KW | 1KW | 1KW | 2KW | 2KW |
| Rated Rotate Speed | 200 RPM | 180RPM | 200RPM | 120RPM | 180RPM |
| Rated Voltage | 56Vac | 56Vac | 56Vac | 115Vac | 115Vac |
| Rated Current | 9A | 12A | 17.9A | 10A | 17.4A |
| Efficiency | >85% | ||||
| Wending Method | Y | ||||
| Insulating Resistance | 100Mohm Min(500V DC) | ||||
| Leakage Level | <5 ma | ||||
| Start Torque | <0.1N/M | <0.3 N/M | <0.5 N/M | <0.3 N/M | |
| Phase Type | 3 Phase | ||||
| Structure | Out rotor | ||||
| Stator | Coreless wire coil | ||||
| Rotor | Rare Earth Permanent Magnet | ||||
| Generator Shell Diameter | 320 | 380 | 550 | 450 | |
| Generator Shell Length | 232 | 241 | 241 | 330 | 258 |
| Weight | 20 | 32 | 32 | 75 | 51 |
| Shaft drameter | 45 | 50 | 50 | 78 | 59 |
| Generator shell material | Aluminum alloy | ||||
| Shaft material | Carbon steel | ||||
| Bearing | Deep groove ball bearing | ||||
| Model | GDG-3KW-100 | GDG-3KW-180 | GDG-5KW-100 | GDG-5KW-150 | GDG-10KW-100 |
|---|---|---|---|---|---|
| Rated Power | 3KW | 3KW | 5KW | 6KW | 10KW |
| Rated Rotate Speed | 100RPM | 180RPM | 100RPM | 150RPM | 100RPM |
| Rated Voltage | 380VAC | 380VAC | 380VAC | 380VAC | 400VAC |
| Rated Current | 4.6A | 4.7A | 7.6A | 15.2A | 14.5A |
| Efficiency | >85% | ||||
| Wending Method | Y | ||||
| Insulating Resistance | 100Mohm Min(500V DC) | ||||
| Leakage Level | <5 ma | ||||
| Start Torque | <1 N/M | <0.5 N/M | <1 N/M | ||
| Phase Type | 3 Phase | ||||
| Structure | Out rotor | ||||
| Stator | Coreless wire coil | ||||
| Rotor | Rare Earth Permanent Magnet | ||||
| Generator Shell Diameter | 620 | 550 | 700 | 620 | 770 |
| Generator Shell Length | 410 | 330 | 400 | 410 | 590 |
| Weight | 110 | 65 | 125 | 110 | 245 |
| Shaft drameter | 80 | 78 | 98 | 80 | 85 |
| Generator shell material | Aluminum alloy | ||||
| Shaft material | Carbon steel | ||||
| Bearing | Deep groove ball bearing | ||||
System Solution
Greef Technical Team can provide the complete ON-grid and Off-grid solution for the project which used our permanent magnetgenerator . All the equipments can be produced according to customer's specific requirements
Product Display
Frequently Asked Questions
What makes the starting torque of this generator so low?
Our generator utilizes a patented "Precise Coil" coreless design. Because there is no iron core in the stator, it completely eliminates magnetic hysteresis and gear notch effects, resulting in an ultra-low starting torque of less than 0.1 N·m to 0.3 N·m depending on the model.
What are the advantages of a coreless permanent magnet generator over traditional ones?
The coreless design significantly reduces mechanical resistance and weight, resulting in higher conversion efficiency. It has a much smaller volume-to-power ratio and offers a lifespan that is up to 8 times longer than traditional iron-core generators.
Can this generator operate effectively in low-wind conditions?
Yes, the coreless technology eliminates startup bottlenecks associated with low-speed wind energy. This maximizes energy utilization in wind speeds as low as 3 m/s, making it highly optimized for low-wind environments.
Is the generator customisable for specific projects?
Absolutely. We can customize specifications such as voltage, speed (RPM), power output, frequency, and dimensions to meet your specific wind turbine or system configuration requirements.
How does the generator handle heat dissipation?
The outer frame is constructed from high-grade aluminum alloy, which works in tandem with a specialized internal structure to provide excellent heat dissipation. For extreme conditions, additional fan cooling options can be integrated.
Do you provide complete On-grid and Off-grid system solutions?
Yes, the Greef Technical Team provides complete tailored On-grid and Off-grid solutions. We design and supply all matching equipment, including controllers and inverters, to suit your specific project needs.
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