A hybrid power router based on power frequency electromagnetic coupling

Abstract

The application discloses a hybrid power router based on power frequency electromagnetic coupling, which comprises three three-column four-winding power frequency transformers, series converters, parallel converters and a controller. The three-column four-winding power frequency transformer comprises a 'day-shaped' three-column transformer core, a high-voltage winding W1, a series winding W2, a low-voltage winding W3 and a parallel winding W4. The high-voltage winding W1 of the three three-column four-winding power frequency transformers is connected to a medium-high voltage AC power grid in an angular connection or star connection mode according to voltage grades. The series winding W2 is connected to an AC side of the series converter in a star connection or angular connection mode. The low-voltage winding W3 is connected to a low-voltage AC port in a star connection mode. The parallel winding W4 is connected to an AC side of the parallel converter in a star connection mode. The DC sides of the series converter and the parallel converter are connected to form a low-voltage DC port. The working voltage and capacity of the converter are reduced, and a large number of sub-modules are not required to be connected in series and parallel.

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