hi there everyone i am working on a project which implements cuk converter i am having problems in both simulating the circuit and practically making it the circuit is given here can anybody please help me with the basics of this circuit that what is the power limitation of this circuit

 

If you want an informed answer you need to provide more detail (input voltage range, output voltage range, output current, switching frequency, etc.).
There is no inherent power limitation of the circuit, except as determined by the components selected.