Power System Blockset

Limitations with the Nonlinear Models

Because nonlinear models are simulated as current sources, they cannot be connected in series with inductors and their terminals cannot be left open.

If, for example, you feed a machine through an inductive source, power2sys will prompt you with an error message. This can be avoided by connecting large resistances in parallel with the source inductances or across the machine terminals.

For the Breaker block and power electronic switches, a series RC snubber circuit is included in the model. You won't have any problem if you keep these snubber circuits in service. The snubber can be changed to a single resistance by setting Cs=Inf, or to a single capacitor by setting Rs=0. To eliminate the snubber, specify Rs=Inf or Cs=0.

The Discrete Library

Modifying the Nonlinear Models of the Powerlib_models Library