This model represents a component with a state specific constant power demand.
The component's state is defined as $s\in S_{cmp}\in\lbrace1,2,\ldots,N\rbrace$ with $N$ component power levels. The mapping between the state and the power demand is realized by the vector $\underline P=[P_1,\ldots,P_N]^\text{T}$, having all power levels of the component as elements, such that
\begin{equation}
P_{tot}(s)=P_{s}.
\end{equation}
- Züst S (2012) Development and verification of an energetic machine tool model on the example of a turning machine. Master thesis. ETH Zurich