
6 Electrotechnical Systems
The command has the following syntax: sps = power_analyze(‘sys’,‘ss’),
where sys is the model name. It computes the equivalent state–space system of the
electrical model and estimates matrixes A, B, C, D of the model in the standard form:
dx
Ax Bu yC
u
,
(1.3)
The quantities in vector x are currents in the inductances and voltages on the capaci-
tors. The nonlinear devices are modeled as current sources controlled by voltages with
the help of nonlinear functions. The system inputs (vector u) are sources of the voltage
and the current and currents of nonlinear devices. The output vector y contains the
measured cur ...