PM Alternator Question

John B. · Oct 17, 2016

How is the voltage regulated on these Permanent Magnet Alternators?
Does anyone know?
Because the magnetic field in the rotor isn't adjustable like the original alternators.
These are new to me but I love the idea.
PMA Permanent Magnet Alternators

MarkB_MI · Oct 17, 2016

I don't know about the alternators at your link, but permanent magnet alternators have been common on small engines (e.g. motorcycles, outboard motors, etc.) for decades. The simple answer is since the field can't be regulated, the stator output is regulated. Or there's no regulation at all, which was the case before solid-state regulators became practical in the eighties.

There are two types of regulators used in small engines: shunt and series. The shunt type is more common and uses SCRs (silicon-controlled rectifiers) to shunt the stator output to ground when the voltage exceeds the regulated level. Series regulators use transistors (usually MOSFETs) to limit the current from the stator and regulate the battery voltage.

Janicholson · Oct 17, 2016

Voltage and current are parsed (Taken apart and made into what is needed as output. This is done with inverter systems and electronic regulation of output. It is the technology that allows welders to make 250 amps and be suitcase size. Jim

Jon Hagen · Oct 17, 2016

If you scroll down below the PM rotor ad, they show a 10,000 watt, 400 amp charge controller for PM wind turbine or solar panels.

PM Alternator Question

John B.

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MarkB_MI

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Janicholson

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Jon Hagen

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