Shulin Zhang, Jinsong Kang, Jiawen Yuan. Synchronized SVPWM Scheme with Optimized Overmodulation for Three-Level NPC Inverters with Low Switching Frequency[J]. 中国电机工程学会电力与能源系统学报(英文), 2025,11(4):1915-1925.
Shulin Zhang, Jinsong Kang, Jiawen Yuan. Synchronized SVPWM Scheme with Optimized Overmodulation for Three-Level NPC Inverters with Low Switching Frequency[J]. CSEE Journal of Power and Energy Systems, 2025, 11(4): 1915-1925.
Shulin Zhang, Jinsong Kang, Jiawen Yuan. Synchronized SVPWM Scheme with Optimized Overmodulation for Three-Level NPC Inverters with Low Switching Frequency[J]. 中国电机工程学会电力与能源系统学报(英文), 2025,11(4):1915-1925.DOI: 10.17775/CSEEJPES.2021.03450.
Shulin Zhang, Jinsong Kang, Jiawen Yuan. Synchronized SVPWM Scheme with Optimized Overmodulation for Three-Level NPC Inverters with Low Switching Frequency[J]. CSEE Journal of Power and Energy Systems, 2025, 11(4): 1915-1925.DOI: 10.17775/CSEEJPES.2021.03450.
Synchronized SVPWM Scheme with Optimized Overmodulation for Three-Level NPC Inverters with Low Switching Frequency
摘要
Abstract
Three-level Neutral-Point-Clamped (NPC) voltage source inverters (VSIs) have been widely used in application of medium-voltage high-power induction motor drives. Due to the limitation of a switching frequency of several hundred Hz in the high-power drive application
a 4-segment synchronized SVPWM scheme is adopted to reduce output current ripple. However
in the overmodulation region
the 4-segment synchronized SVPWM scheme shows high computation complexity and high current THD. Thus
this paper presents an optimized 4-segment synchronized overmodulation scheme with the advantages of low current harmonics and simple digital realization. Optimized and conventional 4-segment synchronized SVPWM schemes are compared and verified in experimental tests. Experimental results prove the proposed scheme can achieve lower current harmonics and computational burden in the overmodulation region