It is a fundamental constraint of real-time simulation that the model must use fixed-step integration solvers. In stiff systems like power electrical circuits, the traditional approach is to use a variable-step solver for resolving the high-frequency components in the behavior of the system. Because the time to solve at each time-step is non-deterministic, these solvers have to be replaced with fixed-step solvers, which can sometimes introduce errors into the solution.

ARTEMiS implements innovative fixed-step solvers and efficient computational techniques that improve the computational performance of Simscape Power Systems, to allow you to develop real-time simulations with your power systems models.

Because these are deterministic fixed step algorithms, you can create robust, accurate real-time simulations of your power system at significantly higher performance than with Simscape Power Systems without ARTEMiS.

The new solvers introduced by the ARTEMiS are proven to be highly accurate and stable over much larger time steps than with the Trapezoidal fixed-time-step algorithms used by Simulink. Furthermore, ARTEMiS includes special power-circuit-specific algorithms for addressing typical problems encountered when converting your Simscape Power Systems model to real-time.

In circuits with up to 100’s of switches, the ARTEMiS-SSN solver dynamically computes the system’s equations using optimized factorization methods in real-time without spikes in computational time when switch operates, unlike regular SPS model. Similarly, strategies to avoid algebraic loops and non-deterministic iterative calculations are included. These allow fixed computation times per step and interruption-free simulation in real-time.