PROJECT TITLE :
Analysis and control of electronic power transformer with star-configuration under unbalanced conditions
The active power adjustment capabilities of zero-sequence and negative-sequence voltages are mathematically compared during this study. Primarily based on the comparison, the input currents and operating vary of the electronic power transformer (EPT) using negative-sequence voltages underneath unbalanced grid voltage conditions have been analysed, which can give theoretical steerage on the look and control of the EPT. A unique reference current within the input stage is proposed for balancing three-section dc voltages. The proposed reference current can be rapidly adjusted to improve the dynamic response of the system and cut back the dc-link voltage deviations when unbalanced grid voltage happens. These analysis and management schemes are supported by both simulation and experimental validation.
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