Winding Method Y Coreless Permanent Magnet Generator 3 Phase Type Product Overview The GREEF NEW ENERGY GDG Series Disc Type Permanent Magnet Generator features a unique iron-core-free design with spindle and rotor arranged in a stacked disc configuration. The stator remains fixed at the center while the rotor rotates on both sides, containing only windings without an iron core. Both stator and rotor employ a flat disc structure with axial air gap magnetic flux, positioned
“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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