| Abstract |
Many control strategies have been proposed to optimize the operation of the Modular MultilevelConverter (MMC) in HVDC applications, including the suppression of the circulating current and thebalancing of arm energies. Applying these control strategies, we present an analysis of the operationrange of the MMC, visualized as P-Q-charts. The analysis is performed with three different parameterswhich limit the operation range of the MMC: submodule voltage ripple, minimum value of the voltagereference and converter losses. The first two parameters define the voltage limit, and the third one thecurrent limit of the converter. They are therefore important parameters for the converter design. |
