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基于空間矢量調(diào)制的中點(diǎn)電位平衡控制方法仿真與分析

Simulation and analysis of midpoint potential balance control method based on space vector modulation

  • 摘要: 以T型三電平逆變器為模型,從拓?fù)浣Y(jié)構(gòu)及空間矢量控制策略等方面分析產(chǎn)生中點(diǎn)電位不平衡的原因,針對(duì)中點(diǎn)電位不平衡,提出通過上下母線電壓的閉環(huán)控制調(diào)節(jié)冗余小矢量作用因子,從而改變PN小矢量作用時(shí)間,調(diào)節(jié)中點(diǎn)電位平衡。

     

    Abstract: Using a T-type three-level inverter as a model, this study analyzes the causes of midpoint potential imbalance from the perspectives of topology and space vector control strategy. To address the issue of midpoint potential imbalance, a closed-loop control of the upper and lower bus voltages is proposed to adjust the redundant small vector action factor, thereby changing the PN small vector action time and regulating the midpoint potential balance.

     

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