Single phase universal motor, variable frequency

[Cosmin1337]

Summary:: How to keep the same voltage and change the frequency of a A.C. universal motor.

Hello there!

I need some help regarding my final project for the university. I have a universal motor, supplied by a single phase, 220V source. I need to make this motor work at the same voltage, but to change the frequency between 20Hz and 60Hz.

If you have any idea how I can do this, I would be honored to hear your thoughts.

Thank you and have a nice day!

 

[berkeman]

Welcome to PhysicsForums.

For schoolwork problems and projects, we require that you show your best efforts before we can offer tutorial help. So what are your thoughts so far? What options have you considered and rejected so far, and why did you reject them?

And can you post a definition of what a "universal motor" is, and why it is called that? Thanks.

 

[Baluncore]

An electrical and a magnetic approach will need to be combined.
Investigate the resistance and the inductance of the windings.
Investigate the magnetic material, frequency determined lamination thickness or composite particle size, along with the magnetic cross-section and limits due to magnetic saturation.