Initial driving device and method of solid-state transformer

Abstract

The present invention relates to an initial driving device and method of a solid-state transformer which reduces the overall number of solid-state transformer components and improves system reliability by charging an internal capacitor of the solid-state transformer using an existing battery instead of a separate external power source. The initial driving device of a solid-state transformer of the present invention is composed of an alternating current (AC)/direct current (DC) converter configured to convert system power to direct current, a high voltage converter configured to convert an output of the AC/DC converter to a high voltage, a medium frequency transformer (MFT) configured to convert an output of the high voltage converter to a low voltage, a low voltage converter configured to convert an output of the MFT to a charging voltage of an electric vehicle or battery, and a controller configured to control operations of the AC/DC converter, the high voltage converter, the MFT, and the low voltage converter.

Dependencies are inferred from the claim text.