PROJECT TITLE :
Wide Correction Range Three-Level Dynamic Voltage Corrector
The dynamic sag correctors are used at the sensitive load terminals of the centralized power provide so as to avoid the grid voltage sag. This paper focuses on the correction of grid voltage swell/sag in giant range and the standard of compensated voltage. A good correction range dynamic voltage corrector is proposed for solving on top of issues with low price. The operation principle, the voltage corrector range, and the look thought of key parameters are analyzed. The increase of dc-link voltage broadens the voltage sag correction range, whereas the belief of the voltage swell correction edges from the bidirectional energy flow. The simulation and experimental results verify the validity of the theoretical analysis. A prototype that applies to the centralized power supply-based ground power unit for aircrafts has been developed. It is characterised as small size, light weight, high compensation potency, sensible dynamic performance, and top quality of output waveform.
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