Obtaining 3-ph system from 2-ph

[sirvo]

Hi there,

We have been trying to generate a 3-ph from a 2-ph system using only resistors. I was wondering if you could help me with that.

We have a 3-ph system connected to 2 transformers. After the transformers, there are 2-ph plus a ground.

So, we tried some delta-wye connections on this 2-ph + ground outputs to obtain a 3-ph system, however, we can`t get a correct amplitude neither the angle.

Also, it`s not possible to access the transformers.

Is there any solution for this?

Thanks in advance.

 

[IanP]

There are three basic methods of connecting 3-phase devices (motors) to single phase:
1. static
2. rotary
3. VFDs based on Hex bridge ..
All are briefly descibed in the following urls:
**broken link removed**
**broken link removed**
https://dcacmotors.blogspot.com/2009/04/running-3-phase-motors-with-1-phase.html

The required phase shift can not be created with resistors - that's out of question ..
It can only be done with devices such as motors or 3-phase transformers .. see attached picture ..

IanP
:|

 

[sirvo]

Hi IanP,

My purpose is not powering a motor. I just want generate the 3-pf from 2-ph.

Well, I did a simulation using PSIM and did get what I want. However, not practical.

Could you analyze the schematic and the result?

Thanks again.