Tech Talk - How The MEP-002A / 003A Generator AC Voltage Regulator Works

Рет қаралды 444

Ай бұрын

In this tech talk video let's look at the unusual AC voltage regulation system on the military MEP-002A and MEP-003A generator sets and clear up some mysteries about how it functions. I'll explain how the unusual magnetic amplifier works and how it is used in this regulator system.
#generator #electronics #techtalk

Пікірлер: 11

@welderfixer Ай бұрын

I am a repairman in the welding equipment field and Lincoln Electric used to use the Mag-Amp output control in many of their designs. Simple but not very efficient. Thanks for explaining this generator control system. I also repair a few AC gensets and I have two of my own (10kw and 15kw) that I must repair before use. So many things to fix - so little time. Oh, I'm also a growing audio nut and I have couple power amps that I must repair and use. It's a bit tough learning PCB testing and repair in my late 50's, but so worth while.

@EriksElectronicsWorkbench Ай бұрын

I know how it goes with too much to fix and so little time! Mag-amps are rugged so it makes sense they would be used in welders. I have seen them in gen set engine control governors and DC power supplies for preregulation. I have some audio equipment repair videos so if you have an interest in that equipment check them out. Thanks for watching!

@trumpetize6230 3 күн бұрын

Can you do a video explaining the load meter

@EriksElectronicsWorkbench 3 күн бұрын

I'll consider that for a topic. Basically the current transformer's secondary winding drives the panel meter directly. There is some switching to select the phase to be monitored. The more load on the generator the higher the current transformer's output voltage which drives the meter to a higher reading.

@jamesoberg8912 Ай бұрын

Does it have Sync and Droop mode?

@EriksElectronicsWorkbench Ай бұрын

It does not have those features, it was not designed to be paralleled with other generator sets.

@basspig 8 күн бұрын

Is this similar to the MEP803A regulator?

@EriksElectronicsWorkbench 7 күн бұрын

No, the MEP803A is different.

@basspig 6 күн бұрын

@@EriksElectronicsWorkbench I'll dig around in the TMs and see if I can find a schematic. I'm curious as to how it works. It does work VERY well. Voltage remains stable from no load to the 85% load of my solar battery charging system.

@EriksElectronicsWorkbench 6 күн бұрын

@@basspig They are good gen sets. The regulator is a more traditional design and does not use the mag amp or anything too unusual. The A1 regulator module just has AC power input from the generator's output, voltage adjust input, sense input, and the output to the field. There is a field flash input directly to the field windings from the DC control circuits that gets the generator voltage to build up when the set is started.

@basspig 6 күн бұрын

@@EriksElectronicsWorkbench I went looking for the documentation, but only found a diagram of the engine starting circuits. I trust it's somewhat simpler than this. I can say with confidence that it works well. No droop from no load to the 85% load of my two EG4 Chargeverters.