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基于T-NPC型三电平逆变器的控制策略研究

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T-NPC三电平逆变器作为中高功率发电领域应用极为广泛的拓扑,对提高电能转换效率起到极大促进作用.研究了基于T-NPC三电平逆变器的新型PET拓扑结构,该拓扑结构将传统变压器的两电平逆变器替换为 T-NPC结构的三电平逆变器,以进一步减少谐波、降低损耗.MATLAB/Simulink仿真实验验证了 T-NPC 型三电平结构控制策略的可行性和有效性.
T-NPC Three-level Inverter-based Control Strategy for Power Electronic Transformers
T-NPC three-level inverters have found extensive application in the field of medium-power and high-power gen-erations,and facilitated greatly the improvement of energy conversion efficiency.The present work studied a new-type of topological structure for power electronic transformers based on the T-NPC three-level inverter.By substituting two-level inverter in conventional PETs with the T-NPC three-level inverter,the proposed control strategy was expected to suppress harmonics and reduce losses.The proposed control strategy was preliminarily indicated feasible and effective through a MATLAB/Simulink simulative experiment.

T-NPCthree level invertercontrol strategyharmonic analysissingle-loop control

左智超、许峰、张礼杰、朱庭耀

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南京工程学院,江苏 南京 211100

T-NPC 三电平逆变器 控制策略 谐波分析 单电流环控制

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(21)