Coreless Permanent Magnet Generator with Rare Earth Permanent Magnet, Low Start Torque, and High Efficiency for Wind Power

The GREEF NEW ENERGY GDG series disc-type permanent magnet generator features a unique spindle and rotor arrangement in a disc shape configuration. The stator is fixed at the center while rotors rotate on both sides, with the spindle containing only windings and no iron core.

Both stator and rotor are constructed in flat disc form utilizing axial air gap magnetic flux, alternately positioned along the axial direction. This compact design combines short axial dimensions with large diameter, easily accommodating multi-pole structures.

Key advantages include high power-to-mass ratio, low speed rating, low wind speed starting capability, small size, low energy consumption, lightweight construction, compact structure, and high efficiency. Ideal for direct-drive vertical axis wind turbines where low rotor wind resistance is essential.

Available in two variants: outer rotor (stationary shaft, non-rotating casing, center cable exit) and inner rotor (rotating shaft, stationary casing, external cable routing).

• Low Start Torque Technology: Starting torque less than 0.1 N·m by eliminating hysteresis and gear notch effects
• High Efficiency: No core design reduces mechanical resistance; "Precise Coil" technology enhances energy conversion
• Advanced Magnetic Design: Rare earth permanent magnets with multiple poles and small air gap for high power density
• Gearless Direct Drive: Brushless design ensures maintenance-free operation and enhanced reliability
• Higher Reliability: Special structural design provides greater power-to-volume and power-to-weight ratios with approximately 8x longer lifespan than traditional generators
• Optimized for Low Wind Speeds: Higher wind turbine utilization under low wind speed conditions
• Excellent Heat Dissipation: Aluminum alloy outer frame with specialized internal structure maintains optimal operating temperatures

• Wind Power Generation: Enhanced output density for megawatt-class wind turbines; reduced iron and hysteresis losses increase efficiency
• Renewable Energy Systems: Solar power generation and other renewable energy infrastructures requiring efficient, reliable energy conversion
• Industrial Applications: Backup or auxiliary power units for machinery and equipment demanding lightweight, dependable power sources
• Customized Solutions: Tailored parameters including power output, rotational speed, and voltage levels for specific application requirements

Specifications: 3 Phase generators operating at 50/60Hz with customized rated voltage

Rotor Technology: Rare earth permanent magnets for superior performance and reliability

Certification: CE certified for quality and safety assurance

Insulating Resistance: 100Mohm minimum at 501V DC

Each Coreless Permanent Magnet Generator is securely packaged with protective materials in sturdy, custom-designed boxes. Packaging includes foam inserts and anti-static bags to protect against shocks, vibrations, and moisture, meeting international shipping standards.

Shipping Options: Standard, expedited, and express delivery services with real-time tracking

Bulk Orders: Additional packaging solutions and optimized freight options available

Please ensure complete and accurate shipping address information. Contact customer service for special packaging or shipping requirements.