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Author Topic: Lister Flicker  (Read 270 times)

StrawHat

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Lister Flicker
« on: January 15, 2020, 03:31:40 AM »
You know, the flicker from each combustion stroke on the slower CS engines, and poor waveforms that made some appliances not work very well. Now in times gone by, there wasn't much choice other than using heavy flywheels, and maybe inductor/resistor/capacitor filters, ect.. Now days, we have a modern thing which has been perfected to maturity called an inverter. Don't use your Lister to directly power appliances, us it to charge a small battery bank that drives an inverter. This can be done simultaneously while drawing a load with the inverter. The battery bank not only acts as a buffer for Lister flicker but starting loads as well. The electronics in the decent modern inverters are so fast and effective that lister flicker is completely removed, and you power is a lot cleaner. This goes for both sine wave and so called modified sine wave inverters. Modern sine wave inverters are also more efficient than old modified wave inverters. The battery bank need not be huge either as it's purpose is used as a very short time impulse energy storage device. We also have the new generation of silicon carbide semiconductor powered inverters which are even more efficient and smaller for the same true power delivered.

Now for collectors sake, you might run a startomatic as is, but for clean power, there are better ways. Or just use the startomatic to charge the battery bank that drives the inverters for the best of both worlds.

glort

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Re: Lister Flicker
« Reply #1 on: January 15, 2020, 04:00:03 AM »

What do you suggest to power the inverter/battery bank?
12/24v alternators are not easy to come across other than automotive types. These need external regulator controllers to have any decent efficency. My 6 1 was flat out driving 2x 80a 12 v internal fan alts which was only about 2 kw output.

Leece alts in 24v with an external reg are good but certainly not cheap here.

mike90045

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Re: Lister Flicker
« Reply #2 on: January 15, 2020, 06:47:39 AM »
My wife has been taught to not run large appliances (toaster, blowdryer) unless the generator is running in the winter - the flicker is the ideal indicator for her that's it's safe to power on.

StrawHat

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Re: Lister Flicker
« Reply #3 on: January 27, 2020, 05:45:02 AM »

What do you suggest to power the inverter/battery bank?
12/24v alternators are not easy to come across other than automotive types. These need external regulator controllers to have any decent efficency. My 6 1 was flat out driving 2x 80a 12 v internal fan alts which was only about 2 kw output.

Leece alts in 24v with an external reg are good but certainly not cheap here.

That's easy, the most efficient way is to charge the batteries is using a typical AC generator(alternator) putting out 120 or 240 using a modern high frequency switching regulator based charger. A good "smart" charger will not care about voltage fluctuations and will deliver a constant charge according to the batteries needs.  Engineering wise, starting with a higher voltage results in less semiconductor losses than lower voltages in switching regulated chargers. Low voltage alternators tend to be extremely inefficient. A modern switching regulated charger working off 120 volts will be more efficient than an old school alternator charging straight into the batteries.  In other words, an old startomatic powering a modern switching regulated battery charger, which charges the batteries, which are also connected to a separate inverter operating simultaneously to run your modern appliances. No flicker, brush noise, or even if the engine stutters, you still have high quality constant power. Correctly selected low ESR capacitors connected across the batteries will act as extra insurance to eliminate any high frequency noise the batteries can not absorb due to inductance an electro-chemical effects. Keep in mind that both the charger and inverter also have capacitors on the battery side.