A new space-vector selector modulation for the modular multilevel converter applications

Colque J.C.; Ruppert E.; Delgado-Hayta I.; Azcue J.L. · Proceedings of the 2020 IEEE 27th International Conference on Electronics, Electrical Engineering and Computing, INTERCON 2020 (2020) · DOI: 10.1109/intercon50315.2020.9220192

Resumen

In this paper is proposed a new modulation technique for the modular multilevel converter, based on space vector theory. This technique is based on step-wave modulation (reduced switching frequency). Therefore, this technique performs a fast calculation of every pulse pattern of upper and lower arm three-phase voltages that will define the switching sequence, in this way becoming an attractive alternative. This technique generates N +1 levels at inverter output voltage/current with and low ripple on the submodules capacitors voltage. The simulation results show a good performance of the proposed modulation technique for any number of submodules.