Listeroid 6/1 diesel with homebrew axial flux alternator

Our 6 horsepower diesel backup generator charging a 48V battery bank at 2kw output with a home brew axial flux alternator. It's a very efficient system with many advantages over charging with a belt driven 5kw generator head through an inverter/charger(which is how we used to do things).

Category:

Science & Technology

Tags:

• lister
• listeroid
• generator
• alternator
• axial
• flux
• otherpower

[rossott]

Do you have plans for the alternator?

Very neat! Thanks for sharing.

God bless.

[otherpower]

We have plans to build 10' diameter wind turbines both on our website, and in our book 'Homebrew Wind Power'. The alternator we used here is basically identical to the 12Volt 10' diameter wind turbine as built with 2" diameter round magnets ~ and here we run it much faster and charge a 48Volt battery with it. It's pretty efficient, I get about 9kWh per gallon of fuel.

[normellow]

From what I was told, if you step down the three phase voltage from the generator you will get lower voltage and higher current. So you dont have to use 48 volt batteries. I guess you could use 12 or 24 volt batteries in parralel. Any way check out my green monster laser!

[otherpower]

I use 48V batteries to prevent losses in the rest of the system (which also involves 2 wind turbines, solar and a steam engine). 48V has a lot of advantages over 12 and some over 24 when it comes to dealing with significant power.

[LincTexPilot]

I really like the compactness of the design....much better than belt driven units. If you have slots in the magnet rotors, you can use a small fan to push some air through to keep the stator cool. I also wonder how the resin-cast rotor will handle the vibrations over time.

[otherpower]

It doesn't hardly even get warm, so the cooling issue is really a none issue. Vibrations...  time will tell.

[vid009]

@otherpower ...Hi, hope your still here ! ....What inverter do you use to convert the 48VDC to 120VAC? The most common I found is 12 & 24VDC input inverters. ...TKS

[LincTexPilot]

@davev8app - not talking about the COOLING of the engine, I am talking about the heat generated in the STATOR windings. It has been three years - - is the resin cracking yet?

[davev8app]

@LincTexPilot well if you put a indirect coil in the tank the lister can stay unpressurized

[dieselscience]

@macon1007 site is a blank page

[macon1007]

Lister Diesels for sale.

oldstylelistersDOTcom

[RVAepiphanyseeker]

@otherpower That's 32c/KWhr ... which is about what I understand typical diesel power to cost for regular multi cylinder diesel engine gensets. But that 32c doesn't include maintenance. My calculation was $2.89/gallon diesel (which is what it was today) divide by 9kWHrs to equal 32c per KWHr.

Have you looked into the heat output for cogeneration (domestic hot water or heated radiant floors from it) and how that affects cost to bennie ratio?

[LincTexPilot]

This design does not use a boiler. It is a diesel fuel type engine, and the "steaming tank" is actually the coolant tank for the engine. The coolant tank uses "thermo-siphon" to circulate engine coolant.

You can use a radiator, but it is more complex because it will require a water pump. The o-ring at the bottom of the cylinder liner will not allow a standard 15-psi automobile cooling system to work. It must remain unpressurized or the coolant will leak into the engine crankcase.

[Trippy518]

You do these in 12, 24, 48 volts. Do you think it was adapt to say a stream design. I seen several over the wheel stream engines. I have been thinking of such a device in a nearby seasonal creek. I have tried the pelton wheel design but my line lose do to distance was bad. Added with pipping cost I was looking for a different route. I have good water for about 3 to 4 months and would like to take advantage of that. I use solar for the most part and have very little wind sources.