TY - GEN
T1 - Research on Carrier-Based Virtual Space Vector Modulation and DC Voltage Offset Compensation Method for Three-Level NPC Inverter
AU - Gao, Zhan
AU - Wang, Li Xin
AU - Shen, Wen
AU - Wang, Jing Teng
AU - Song, Mao Lin
AU - Wu, Xuan Qin
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - Neutral-point voltage (NPV) balance control is the key issue of the neutral-point-clamped (NPC) inverter. Compared to SVPWM, virtual space vector modulation (VSVM) can reduce the triple frequency fluctuation of the NPV at any modulation index and power factor, but cannot eliminate the DC voltage offset caused by accumulated errors. Besides, the vector dwell time calculation of VSVM is complicated. To solve the above problems, the equivalent modulation wave of VSVM is firstly deduced in this paper, and the carrier-based VSVM (CBVSVM), which can simplify the calculation of VSVM significantly, is further proposed. Then, for the five different regions of VSVM, the relation between the moving direction of modulation wave and DC voltage offset is analyzed respectively. On this basis, the DC voltage offset compensation method without changing the output voltage amplitude is researched. Finally, the effectiveness of the proposed CBVSVM and DC voltage offset compensation method are verified by simulation and experiment.
AB - Neutral-point voltage (NPV) balance control is the key issue of the neutral-point-clamped (NPC) inverter. Compared to SVPWM, virtual space vector modulation (VSVM) can reduce the triple frequency fluctuation of the NPV at any modulation index and power factor, but cannot eliminate the DC voltage offset caused by accumulated errors. Besides, the vector dwell time calculation of VSVM is complicated. To solve the above problems, the equivalent modulation wave of VSVM is firstly deduced in this paper, and the carrier-based VSVM (CBVSVM), which can simplify the calculation of VSVM significantly, is further proposed. Then, for the five different regions of VSVM, the relation between the moving direction of modulation wave and DC voltage offset is analyzed respectively. On this basis, the DC voltage offset compensation method without changing the output voltage amplitude is researched. Finally, the effectiveness of the proposed CBVSVM and DC voltage offset compensation method are verified by simulation and experiment.
KW - DC voltage offset
KW - carrier-based virtual space vector modulation
KW - modulation index
KW - neutral-point voltage
KW - power factor
UR - https://www.scopus.com/pages/publications/85199047996
U2 - 10.1109/IPEMC-ECCEAsia60879.2024.10567139
DO - 10.1109/IPEMC-ECCEAsia60879.2024.10567139
M3 - 会议稿件
AN - SCOPUS:85199047996
T3 - 2024 IEEE 10th International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
SP - 4755
EP - 4760
BT - 2024 IEEE 10th International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th IEEE International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
Y2 - 17 May 2024 through 20 May 2024
ER -