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首页> 外文期刊>IEEE Transactions on Power Delivery >Selection of passive elements for a three-level inverter basedstatic synchronous compensator
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Selection of passive elements for a three-level inverter basedstatic synchronous compensator

机译：基于三电平逆变器的静态同步补偿器的无源元件选择

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摘要

Mathematical models for a three phase three-level staticnsynchronous compensator (STATCOM) working with both fundamentalnfrequency modulation and selective harmonic elimination modulation arendescribed. The mathematical models were obtained by assuming that thenpower system and the operation of the STATCOM are on a balancednthree-phase basis. The mathematical models were simplified to obtain thenSTATCOM AC side current, the DC capacitor voltage and the ripple fornboth switching strategies. These simplified design tools were validatednusing the exact model. The resonance between the DC side capacitance andnthe coupling reactance was studied using the mathematical model and thenresonance frequency for the three-level STATCOM was obtained. Thenresonance frequency was validated against results of electromagneticncomputer simulations. Using the design tools developed and consideringnthe resonance studies, the process for selection of the size of DC sidencapacitors for a small STATCOM was demonstrated
机译：描述了同时具有基波频率调制和选择性谐波消除调制的三相三电平静态同步补偿器（STATCOM）的数学模型。通过假设电力系统和STATCOM的运行处于平衡的三相基础上来获得数学模型。简化了数学模型，然后获得两种开关策略的STATCOM AC侧电流，DC电容器电压和纹波。这些简化的设计工具已使用确切的模型进行了验证。用数学模型研究了直流侧电容与耦合电抗之间的谐振，得到了三电平STATCOM的谐振频率。然后根据电磁计算机仿真结果验证了共振频率。使用开发的设计工具并考虑共振研究，演示了为小型STATCOM选择直流侧电容的尺寸的过程

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