A green and clean environment is a human right!

Electronics => Electronics => 3 Phase => Topic started by: hydro on January 12, 2008, 22:10:07 pm

Title: 3 phase circuit
Post by: Login to see usernames on January 12, 2008, 22:10:07 pm

here is a very good ideal for a 3 phase circuit.

Title: Re: 3 phase circuit
Post by: Login to see usernames on January 23, 2008, 09:21:39 am

I found this circuit on the net. (variable-frequency, three-phase, sine-wave generator circuit)

http://www.techbriefs.com/content/view/1839/32/

Title: Re: 3 phase circuit
Post by: Login to see usernames on January 23, 2008, 13:57:06 pm

Hi,

I have seen that schematic too. Its difficult to duplicate because there some blancs in.
If you can develop it, please do so.

Br
Steve

Title: Re: 3 phase circuit
Post by: Login to see usernames on January 25, 2008, 21:22:06 pm

This is a simulation I made for the circuit in the link. The 120deg phase shift part is shown clearly. Now you do not want on and offs to replicate the alternator, yo want clean sinewaves, therefore you would add op-amp filters to the 3 outputs. for variable frequency operation you will need switched capactor active filters.

Title: Re: 3 phase circuit
Post by: Login to see usernames on January 25, 2008, 22:56:46 pm

the sine waves "has" to come from a transformer. the circuit looks good if its 120 degrees.

so who will be the first one to make a circuit of this and throw a 3 phase transformer onto it?

good work hydrogenmask

thanks guys!

Title: Re: 3 phase circuit
Post by: Login to see usernames on January 26, 2008, 14:32:56 pm

today I recieved my new oscope. as soon as I figure out that it is working fine, I will begin to sort out this alternator replicating circuit.

Hmask

Title: Re: 3 phase circuit
Post by: Login to see usernames on April 15, 2008, 19:54:12 pm

Quote from: Login to see usernames on April 15, 2008, 01:51:36 am

Hi everyone this is the 3 phase circuit I am trying too make and use.

Hi H2Opower,

Thats a very good circuit you posted. Very well designed with Fet-driverchips and all.
How far are you with building it?

br
steve

Title: Re: 3 phase circuit
Post by: Login to see usernames on April 15, 2008, 23:35:18 pm

Quote from: Login to see usernames on April 15, 2008, 21:58:00 pm

Hi,
I already built the circuit, just need working 555 timers to test it all out and also putting in a variable power supply that too is in the mail, as they say.

For some reason it wont let me put a pic up of it.

But you can view it in my bucket: http://s208.photobucket.com/albums/bb249/h20power/?action=view&current=Picture176.jpg

H2O,

You have put a lot of efford in your chokes/coils, dude.
I am impressed! Nice bucket full of kewl pics.
Do you have any mentionial successes?


br
Steve

Title: Re: 3 phase circuit
Post by: Login to see usernames on April 16, 2008, 09:12:02 am

I see a lot of work there H20power. Wow that bobin in your cad drawings looks like the lhc. You look very determined.
 Any good results ?

hm

Title: Re: 3 phase circuit
Post by: Login to see usernames on April 16, 2008, 12:41:56 pm

Hi H2Opower,

Its nice to read your enthousiasme about the VIC.
Why are you building a 3 phase circuit, if you so far with the VIC?
About the schematic of Dingel. Is that all info you have? Is there more info on that part in your library?

I can understand your theory about stepping up voltage.
A bifilair coil is stepping up voltage. So, yes you will increase voltage.
About Bemf, i have made a simple circuit for testing this.
http://ionizationx.com/index.php?topic=200.0
The voltage peak without load is very high. Only when you add a load, like a very low ohm wfc, the peaks will drop to normal levels.
Did you find a workaround for that problem?

br
steve