TY - GEN
T1 - Voltage Balancing of NPC Converter Capacitors in FS-MPC Method Using Current Sensor with Reduction of Computational Burden
AU - Ja'Afari, Alireza
AU - Davari, S. Alireza
AU - Mousavi, Mahdi S.
AU - Garcia, Cristian
AU - Zhang, Zhenbin
AU - Wang, Fengxiang
AU - Rodriguez, Jose
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In using a neutral point clamped (NPC) converter, in addition to the control method, it is necessary to balance the voltage of DC-link capacitors. If the capacitors in this converter are not balanced, the output voltage and current will not be properly controlled. There are several methods for balancing the voltage of capacitors, which are mostly based on the measurement of the voltages of the capacitors. Voltage sensor-based balancing methods increase the total cost and the measurement error due to the use of voltage sensor interface circuits. Also, the use of the finite-set model predictive control (FS-MPC) method will increase the computational burden. In this paper, current sensors are used instead of voltage sensors. Besides, redundancy switching is used to balance the voltages of the capacitors. To reduce the computational burden, the triangular zoning method is used, in which only three candidates are included in the cost function. The proposed method is evaluated using simulation.
AB - In using a neutral point clamped (NPC) converter, in addition to the control method, it is necessary to balance the voltage of DC-link capacitors. If the capacitors in this converter are not balanced, the output voltage and current will not be properly controlled. There are several methods for balancing the voltage of capacitors, which are mostly based on the measurement of the voltages of the capacitors. Voltage sensor-based balancing methods increase the total cost and the measurement error due to the use of voltage sensor interface circuits. Also, the use of the finite-set model predictive control (FS-MPC) method will increase the computational burden. In this paper, current sensors are used instead of voltage sensors. Besides, redundancy switching is used to balance the voltages of the capacitors. To reduce the computational burden, the triangular zoning method is used, in which only three candidates are included in the cost function. The proposed method is evaluated using simulation.
KW - capacitors voltage balance
KW - computational burden
KW - current sensor
KW - model predictive control (MPC)
KW - multilevel inverter
KW - neutral point clamped (NPC)
KW - voltage sensor
UR - http://www.scopus.com/inward/record.url?scp=85125817761&partnerID=8YFLogxK
U2 - 10.1109/PRECEDE51386.2021.9680939
DO - 10.1109/PRECEDE51386.2021.9680939
M3 - Conference contribution
AN - SCOPUS:85125817761
T3 - 6th IEEE International Conference on Predictive Control of Electrical Drives and Power Electronics, PRECEDE 2021
SP - 218
EP - 223
BT - 6th IEEE International Conference on Predictive Control of Electrical Drives and Power Electronics, PRECEDE 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 6th IEEE International Conference on Predictive Control of Electrical Drives and Power Electronics, PRECEDE 2021
Y2 - 20 November 2021 through 22 November 2021
ER -