TY - GEN
T1 - A simple modulation strategy for a reduced multilevel converter using predictive control
AU - Norambuena, Margarita
AU - Lezana, Pablo
AU - Rodriguez, Jose
N1 - Funding Information:
ACKNOWLEDGEMENT The authors acknowledge the support of CONICYT under grant Basal Project FB0008 Advanced Center for Electrical and Electronic Engineering (AC3E) and FONDECYT under grant 1170167 and under grant 11180233.
PY - 2019/2/1
Y1 - 2019/2/1
N2 - Multilevel converters have many advantages in power electronics. This paper presents a new topology of multilevel converter based on flying capacitors that allows to increase the number of output voltage levels reducing the numbers of semiconductors necessary in comparison with the standard multilevel converters like Flying Capacitor Converter (FCC) and Stacked Multicell Converter (SMC). In particular, the proposed converter, Reduced Multilevel Converter (RMC), is an attractive choice as it can generate high quality output waveforms and reach high power levels. Several works have been presented in the literature for voltage capacitor balancing, relying on self-balancing properties for FCC and SMC. Nevertheless, the conditions for self-balancing operation cannot be guaranteed or achieved easily in the proposed multilevel converter. In this paper, a simple closed-loop scheme, based on Model Predictive Control (MPC), is used to properly modulate the converter output voltage in order to keep the capacitor voltages at the desired values. As the proposed modulation strategy regulates the capacitor voltages, fast linear controllers can be used for the current tracking, improving the dynamic behavior of the overall system.
AB - Multilevel converters have many advantages in power electronics. This paper presents a new topology of multilevel converter based on flying capacitors that allows to increase the number of output voltage levels reducing the numbers of semiconductors necessary in comparison with the standard multilevel converters like Flying Capacitor Converter (FCC) and Stacked Multicell Converter (SMC). In particular, the proposed converter, Reduced Multilevel Converter (RMC), is an attractive choice as it can generate high quality output waveforms and reach high power levels. Several works have been presented in the literature for voltage capacitor balancing, relying on self-balancing properties for FCC and SMC. Nevertheless, the conditions for self-balancing operation cannot be guaranteed or achieved easily in the proposed multilevel converter. In this paper, a simple closed-loop scheme, based on Model Predictive Control (MPC), is used to properly modulate the converter output voltage in order to keep the capacitor voltages at the desired values. As the proposed modulation strategy regulates the capacitor voltages, fast linear controllers can be used for the current tracking, improving the dynamic behavior of the overall system.
UR - http://www.scopus.com/inward/record.url?scp=85069045849&partnerID=8YFLogxK
U2 - 10.1109/ICIT.2019.8754961
DO - 10.1109/ICIT.2019.8754961
M3 - Conference contribution
AN - SCOPUS:85069045849
T3 - Proceedings of the IEEE International Conference on Industrial Technology
SP - 1471
EP - 1475
BT - Proceedings - 2019 IEEE International Conference on Industrial Technology, ICIT 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE International Conference on Industrial Technology, ICIT 2019
Y2 - 13 February 2019 through 15 February 2019
ER -