Abundant autonomy, step one: capture the hum of hidden power with this Low‑Noise, Low‑RPM Permanent‑Magnet Generator, available in 20 kW. Built for mobility and efficiency at a volume far quieter than conventional generators, it suits off‑grid lighting, electrification, water pumping, or general discreet backup power—anywhere you need dependable current without the roar of an engine.
This machine stands on the shoulders of giants. From Faraday's spinning magnets to Tesla's vision of resonance, permanent‑magnet generators have matured into genuinely useful tools. Here, a slow-moving rotor fitted with rare‑earth magnets works with precision-engineered stators to convert motion into a steady 50 Hz three-phase supply, with minimal mechanical noise and vibration.
Picture a crew setting up off-grid, well beyond any marked chart—wind or a mini hydro setup turns the shaft, and when neither is running, the DC motor steps in to keep the current flowing. Lights come up, refrigerators hum, and well pumps keep working, without a single engine cough. That's the kind of steady, silent performance this generator is built to deliver.
With solid efficiency and a rugged build, this PMG holds up against damp and dust (IP54 rating), making it fit for outdoor mounting. Available in 110V and 220V options for battery-charging, or for mains integration, it adapts to your setup. The brushless design keeps maintenance low, with a service life measured in decades.
Every component is built with intent—SKF-grade bearings, precision copper windings, a cooled moulded-case housing. The result is a generator that stays out of your soundscape, delivering calm, clean sine-wave energy to your home, cabin, or workshop. No dirty noise on the power lines—just a smooth, steady current.
Installation is straightforward: connect your power source, wire the output to your setup, and you're under way. No fuel required, no engine fumes—just the physics of spin and magnetism, put to work.
This is more than a generator—it's genuine independence for communities, workshops, and anyone who'd rather answer to their own power supply than the grid's.
The DC motor is 24V 500w 20A
The torque of a 500W 20A at 3000RPM is 15.9 Nm
Power output of generator is 150A-180A @ 50Hz
Tested running load 0.25w - 7Kw
Yes, the batteries can be connected to solar panels while the unit is in operation.
Yes, you can connect a 24V battery charger to a single-phase AC output to propagate an extended battery charge, loads will need to be balanced with the other lines to increase efficiency.
The full 3-phase output can be connected straight to 3-phase machinery or to suitable high/low cost equipment, such as a 3-phase high capacity/voltage rectifier or controller, depending on your application.
Schematics for converting the 3-phase supply into three separate single phase outputs are available post purchase at an additional cost.
Please note that high-capacity voltage rectifiers and controllers are NOT included due to cost variance, but are not necessary to use and benefit from this machine.
The size of the entire product is about 40cm x 25cm x 20cm
The weight is about 24Kg.
Package includes
500w DC motor
Coupler
20Kw AC generator
Suppliers of specialist power gear like this can pull stock without notice—if this one's what you need, best to secure her before she's gone from the hold.
What shipmates are saying:
"The merchant is very good and guided me through the installation." — AliExpress buyer, ★★★★★
