How to model a constant power load in Simulink?

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Francisco D Freijedo

Hi,

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

Ammar A. Hajjar

Hello,

The following paper may help you:

Constant power loads and negative impedance instability in automotive systems: definition, modeling, stability, and control of power electronic converters and motor drives