How does this generator work ?

[Externet]

Hello.
My little portable generator Coleman 2500W died. Opened it to see and found the rotor assembly winding (2) has no brushes. The stator windings has a connector(6): 2 yellow wires to a capacitor and a black and a white to the 120VAC outlet.
How does it work ? What type of AC generator is it ?

 

[Lightium]

Isn't this a gas engine powered induction motor generator?

 

[Lightium]

I would think you wouldn't need bushings.

 

[AnalogKid]

Electric generator - Wikipedia

en.wikipedia.org

See the section on Self-Excitation.

ak

 

[Externet]

Isn't this a gas engine powered induction motor generator?

It is gasoline powered engine. Not gas.

 

[Externet]

I would think you wouldn't need bushings.

What bushings ?

 

[AnalogKid]

I think he means brushes.

ak

 

[Lightium]

Last I checked it's a gas station not a gasoline station.

 

[Externet]

Last time I checked was a fuel station. But you may be right; saw one selling propane too. (They did not sell gasoline nor diesel)

 

[Lightium]

It's often that I have to deal with either being a regular joe or an engineer.

 

[Externet]

This works with gas :

 

[Lightium]

What's out of my price range is sometimes forgotten.

 

[camerart]

This works with gas :

View attachment 147707

Hi,
Gas powered generators is a subject I've just got interested in.
Instead of looking this one up, I'll ask here, and get some expert answers

In my country, electric per KW is 3x more expensive that gas per KW.
If I had a gas generator, could it's output efficiency compete with the price of electric?
C.

 

[Nigel Goodwin]

Hi,
Gas powered generators is a subject I've just got interested in.
Instead of looking this one up, I'll ask here, and get some expert answers

In my country, electric per KW is 3x more expensive that gas per KW.
If I had a gas generator, could it's output efficiency compete with the price of electric?
C.

I somehow doubt it, you would need a substantially large generator and a much cheaper gas price.

The 'price per kilowatt' doesn't really compare, because you don't price gas in kilowatts. I 'presume' the actual comparison is the heat output, for heating your home etc. Electricity is a very expensive way to heat a house - using it to run a heat pump in a VERY well insulated house can get down in the region of gas heating (but in the same well insulated house the gas heating will get cheaper as well).

 

[Diver300]

Hi,
Gas powered generators is a subject I've just got interested in.
Instead of looking this one up, I'll ask here, and get some expert answers

In my country, electric per KW is 3x more expensive that gas per KW.
If I had a gas generator, could it's output efficiency compete with the price of electric?
C.

No, because you can't get an efficiency of 1/3rd from a gas generator.

If you can use the waste heat from the generator to heat your house in place of gas that you would otherwise burn in a boiler or furnace, then what electricity you get is at the cost of the gas, plus the costs of buying and maintaining the generator.

 

[Lo_volt]

No, because you can't get an efficiency of 1/3rd from a gas generator.

If you can use the waste heat from the generator to heat your house in place of gas that you would otherwise burn in a boiler or furnace, then what electricity you get is at the cost of the gas, plus the costs of buying and maintaining the generator.

There are actually products that do this. The process is called cogeneration. Unfortunately, it doesn't help much in warm climates. This makes it viable only in the Northern parts of the US and Canada. Probably would work well in the Arctic Circle countries of northern Europe as well.

 

[ZipZapOuch]

This works with gas :

View attachment 147707

Look around the internet, the Generac Brand seems to need new brushes on a regular basis (24 to 48 hours of use). If true, I'd prefer not to expect it to work and disappoint myself when it fails - especially at $7000 or more with installation.