MATACDC is a free MATLAB based open source program for AC/DC power flow analysis. The program uses a sequential AC/DC power flow algorithm and can be used to simulate interconnected AC systems and Multi-terminal Voltage Source Converter High Voltage Direct Current (VSC HVDC) systems. 

The AC/DC power flow problem is solved sequentially, meaning that the program solves the AC/DC power flow by iterating between the AC systems and the DC systems. With respect to the AC system power flow, the program completely relies on MATPOWER, a power flow and optimal power flow program in MATLAB. The package has been fully integrated with the existing AC power flow routines developed in MATPOWER, while keeping the MATPOWER original source code unaltered. 


MATACDC shares the same philosophy as MATPOWER and MATDYN: “It is intended as a simulation tool for researchers and educators that is easy to use and modify.” The source code of MATACDC is available. The code is well documented, structured and easy to understand and modify. 

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