Would like to know how to model a constant power load in SImulink/Simpowersystems. I'd like to be able to simply change the power requirement of the load which is being powered by two boost converters. Any help would be great, thanks.
a simple way to model constant power load is by a negative resistor. This is derived by small signal analysis and can be used to play with transfer functions.
The value of the resistor is given by the power consumption, R=-(V^2)/P
Constant power loads and negative impedance instability in automotive systems: definition, modeling, stability, and control of power electronic converters and motor drives