Program Limitations

As with any software simulation, there are limitations which prevent the real world being fully modelled. The following limitations are catalogued at this time:

Inductance

The value of the inductor used in choke power supplies does not vary with DC current, all simulations use a static value. In a real world scenario, the value of the inductor would decrease as the current is increased.

Transformer

The transformer model is simplistic - it utilises an AC voltage source, in series with an effective impedance (strictly, a resistance). Attributes not modelled include winding capacitance, variation in resistance with temperature, core losses, and leakage effects.

Choke input filters

Choke input filters are now catered for, however the model is fairly simplistic. Should the current collapse to zero in the choke, then high voltage spikes will appear at the cathode of the rectifier. In a real world scenario, these would be partly soaked up by the reverse capacitance of the rectifier. As rectifier capacitance is not modelled, a reverse leak facility helps tame this effect.

       
      Page last updated 13-February-2017 13:02