MMChvdcLibrary

MMChvdcLibrary

Scope

MMChvdcLibrary is a Modelica library for phasor-domain arm average value modeling of MMC-based HVDC systems, designed to be easily combined with OpenIPSL, for power system simulation.

The library provides modular converter models, control blocks, sensors, and mathematical operators, assembled into station-level models supporting P-Q, Vdc–Q, and Vac phasor control modes, along with a user-configurable master HVDC station integrating all three.

The library was developed using Dymola 2026 Refresh 1, compatibility with other Modelica tools has not been fully tested.

Quick-Start

1. Load OpenIPSL v3.1.0 to your Modelica tool. See the following Quick-Start Guide to use OpenIPSL with OpenModelica here.

2. Similar to the instructions in the OpenIPSL Quick-Start, run any of the run three pre-configured examples below:

MMChvdcLibrary.Examples.ActivePowerModeTest
MMChvdcLibrary.Examples.DCvoltageModeTest
MMChvdcLibrary.Examples.VacModeTest

Citing MMChvdcLibrary

If you use this library in your work or research, all we ask in exchange is that you cite the reference publications. Please reference our work:

• Md N.H. Chowdhury and L. Vanfretti, “MMChvdcLibrary: Modeling Arm Average Value Modular Multilevel Converters in Modelica for Power System Simulation,” submitted for publication, American Modelica & FMI Conference 2026, Atlanta, GA, USA, October 12–14, 2026. Author’s Pre-print Copy: here
• Md. N.H. Chowdhury, L. Vanfretti, J. Frasier, and S.S. Tawde, “Phasor-Domain Modeling of Blocking Behavior in Modular Multilevel Converters,” 2026 IEEE Power & Energy Society General Meeting, July 19-23, 2026. Author’s Pre-print Copy: here

Acknowledgements

This paper is based, in part, on work supported in whole or in part by the New York Independent System Operator (NYISO) Funded Project: “Dynamic Modeling of Voltage Source Converters for Black Start Capability Analysis” whose support is gratefully acknowledged.