Modular Multilevel Converter With Different Submodule Concepts - Part I: Capacitor Voltage Balancing Method. - Estibaliz Solas; Gonzalo Abad; Jon Andoni Barrena; Sergio Aurtenetxea; Ainhoa Carcar; Ludwik Zajac (IEEE Trans. Ind. Electron., 2013)

Modular Multilevel Converter With Different Submodule Concepts - Part II: Experimental Validation and Comparison for HVDC Application. - Estibaliz Solas; Gonzalo Abad; Jon Andoni Barrena; Sergio Aurtenetxea; Ainhoa Carcar; Ludwik Zajac (IEEE Trans. Ind. Electron., 2013)

A new current control of High Instantaneous Power Impulse Converter. - Ludwik Zajac; Mariusz Malinowski; Sebastian Stynski; Marek Jasinski (IECON, 2015)