A Converter Topology Suitable for Interfacing Energy Storage with the DC Link of a StatCom. - Hailian Xie; Lennart Angquist; Hans-Peter Nee (IAS, 2008)

Design study of a converter interface interconnecting an energy storage with the dc-link of a VSC. - Hailian Xie; Lennart Ängquist; Hans-Peter Nee (ISGT Europe, 2010)

Evaluation of different carrier-based PWM methods for modular multilevel converters for HVDC application. - Arman Hassanpoor; Staffan Norrga; Hans-Peter Nee; Lennart Angquist (IECON, 2012)

Frequency-domain modeling of modular multilevel converters. - Staffan Norrga; Lennart Angquist; Kalle Ilves; Lennart Harnefors; Hans-Peter Nee (IECON, 2012)

Stability analysis of modular multilevel converters with open-loop control. - Antonios Antonopoulos; Lennart Angquist; Lennart Harnefors; Kalle Ilves; Hans-Peter Nee (IECON, 2013)

Dynamic Analysis of Modular Multilevel Converters. - Lennart Harnefors; Antonios Antonopoulos; Staffan Norrga; Lennart Angquist; Hans-Peter Nee (IEEE Trans. Ind. Electron., 2013)

Global Asymptotic Stability of Modular Multilevel Converters. - Antonios Antonopoulos; Lennart Angquist; Lennart Harnefors; Kalle Ilves; Hans-Peter Nee (IEEE Trans. Ind. Electron., 2014)

Performance of the modular multilevel converter with redundant submodules. - Noman Ahmed; Lennart Angquist; Antonios Antonopoulos; Lennart Harnefors; Staffan Norrga; Hans-Peter Nee (IECON, 2015)

Low-cost ultra-fast DC circuit-breaker: Power electronics integrated with mechanical switchgear. - Lennart Angquist; Antoine Baudoin; Staffan Norrga; Simon Nee; Tomas Modeer (ICIT, 2018)

The Impact of Point-To-Point VSC-HVDC Protection on Short-Term AC System Voltage. - Geraint P. Chaffey; Dirk Van Hertem; Niklas Svensson; Staffan Norrga; Lennart Angquist (ISGT Europe, 2018)