Decoupling technique for real-time simulation of power electronic using short line

-This paper proposes a method to decouple and subdivide electrical circuits in order to achieve fast and accurate real-time simulation. Using this method, each state variable can be discretized using different solvers. By combining implicit and explicit ordinary differential equation solvers, state-space equations are decoupled while remaining accurate and stable. Unlike most decoupling methods proposed in previous literature, no artificial delay or supplementary states are added to decouple the system. Furthermore, this technique is meant to be implemented with already commercially available software by modifying only the point of coupling of the circuit. Finally, stability, accuracy and gain in computation speed are demonstrated through an example and poles study.