Unified Modeling and Simulation Approach for Modular Multilevel Voltage Source Converters

This paper presents a unified approach for efficient modeling and simulation in a multi-tool environment. The motivations are clearly defined and the approach is explained. While this method is applicable to a wide range of tools and applications, it is illustrated with Matlab/Simulink, for control system development, and two EMT simulation tools, EMTP-RV and Hypersim. The sample application is a point-to-point HVDC link based on modular multilevel voltage source converters: the EMT modeling of this technology is briefly presented as well as a complete control and protection system. The unifying agent in this example is the Simulink controller but the unified approach could be applied with other parts of the system and/or developed in other software. Results comparison is shown to be excellent and fully coherent, enabling this software to be used with full confidence in its respective niche applications.