motor-generator set for mppt

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zeitfest Guru Joined: 31/07/2019 Location: Australia Posts: 577	Posted: 12:18pm 03 Jun 2025       Definitely NOT about perpetual motion. A motor/generator set was a method of transforming voltage/current supplies without a traditional transformer and AC. Eg 110v 20 amp motor would drive a 220v generator giving theoretically 10 amp but in reality somewhat less owing to losses. The motor and generator typically used electromagnets to create the required magnetic fields. By varying the magnet current the voltage/current/speed characteristics of the motor or generator can be varied. So it should be possible to match the electrical load set by the motor to match the output of the solar panel. Then the generator could be tweaked so the mechanical load was suitable to maintain the speed. The losses through inefficiency would probably outweigh any advantage. But it could be  very robust. [Remember it was the pre-electronics era...efficiency wasn't a concern. A Melbourne tram was controlled by passing the current through a huge carbon block aka variable resistor, varied by the driver altering the physical pressure on the block. And they say it wasn't sophisticated     ]