Air Cooled Coreless Permanent Magnet Generator Product Overview The GREEF NEW ENERGY GDG Series Disc Type Permanent Magnet Generator features an innovative coreless design with spindle and rotor arranged in a disc shape. The stator remains fixed at the center while the rotor rotates on both sides, utilizing axial air gap magnetic flux for optimal performance. With its short axial length and large diameter, the generator easily accommodates multi-pole configurations, resulting
“I built a small pico hydro system on the creek behind my off-grid cabin. The water head is only 3 meters and flow rate around 0.2 m³/s – too low for most generators. This axial flux coreless unit starts generating usable power at just 150 RPM. No cogging, no iron loss, and it’s silent. I’m getting 300-400W continuously, 24/7. My old induction generator would barely light an LED at that speed. Absolutely perfect for low-head hydro.”
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