Can I connect a high voltage inverters directly to an alternator without a battery? If so, can I plug multiple inverters to the alternator if the alternator can supply the necessary amp? (check image)

 

An alternator needs a battery to supply its Stator coil, to proved the magnetic field.

 

I don't quite understand what that means. So no, you can't connect an inverter directly from an alternator?

 

Here, read slower:

Can I connect to an alternator without a battery?

An alternator needs a battery

 

The problem is an automotive type alternator requires a current to create the magnetic field that it uses to generate electricity. So if it's stopped, to get it started you have to both spin it AND supply some current to the windings to get the magnetic field going. So a battery is required to get it started. Once it's going, it can operate without a battery.

If you have a permanent magnet alternator, I think it's really called a magneto, then you don't need a battery to get it going because the magnetic field comes from permanent magnets, not an electrical coil. Many motorcycles use this type of alternator/generator/whatever you want to call it.

In either case, in the absence of a battery you should use some capacitors to try to clean up some of the electrical noise. Also if your inverters suddenly require a big burst of power, the alternator/magneto/generator likely won't be able to supply a sudden surge, so capacitors (big ones) would help with this as well.

 

I have a gas generator. How does it generate electricity without a battery? Are the alternators in these gas generators fitted with permanent magnets?

 

Does a voltage regular clean up the noises?

 

I have a gas generator. How does it generate electricity without a battery? Are the alternators in these gas generators fitted with permanent magnets?

Time to spend a evening or several getting to know what Google can teach you about things!

 

Your generator has some residual permanent magnetism that gets things started.

A voltage regulator does not necessarily clean up noise. Some types of regulators create a bunch of noise themselves, such as the shunt type regulators common on motorcycles.