Performance comparison of phase shifted PWM and sorting method for modular multilevel converters
Paper i proceeding, 2015

Modular Multilevel Converters (MMC) are the solution of preference in HVDC applications due to modularity, scalability, low losses and low filtering requirement. Carrier-based (PWM) and carrier-less (nearest level control) modulation can be applied. By using advanced sorting methods focusing on keeping the capacitor voltage ripple under some limit, unnecessary switching events are eliminated leading to reduced switching losses. This paper presents a comparison between the steady-state performances in terms of output voltage THD and equivalent switching frequency of the Phase Shifted Carrier PWM and NLC plus sorting methods.

Modular multi-level converters

Power converters

Reduced switching

Capacitor voltage ripple

Counting circuits

Phase-shifted PWM

Performance comparison

Sorting method

Phase shifters

Steady state performance

Phase shift

Output voltages

Power electronics


M. Rejas

Aalborg Universitet

L. Mathe

Aalborg Universitet

P. Dan Burlacu

Aalborg Universitet

H. A. Pereira

Universidade Federal de Vicosa

A. Sangwongwanich

Aalborg Universitet

Massimo Bongiorno

Chalmers, Energi och miljö, Elkraftteknik

R. Teodorescu

Aalborg Universitet

17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015, Geneva, Switzerland, 8-10 September



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