2 results about "Variable-frequency transformer" patented technology

This utility model discloses a structure for the output pins of a frequency converter transformer, specifically a frequency converter transformer pin structure. It includes a frequency converter transformer with output pins. A copper sleeve is fitted over the output pins, and an inlet groove is formed on the side wall of the copper sleeve to facilitate the assembly of the output pins within the sleeve. The inner surface of the inlet groove is rounded to prevent cuts to the output pins. It also includes a limiting component to prevent the inlet groove from gradually increasing in size, and this limiting component is located on the copper sleeve. The limiting component includes a ring, through which the copper sleeve passes. An annular rubber pad is fixedly installed on the inner surface of the ring, and the inner surface of the annular rubber pad is in close contact with the outer surface of the copper sleeve. This utility model improves the strength of the frequency converter transformer pins and enhances their resistance to deformation.

The application provides a grid networking support system of an LCC-HVDC driven variable-frequency transformer and a topological function design method thereof, first proposes a reconstruction scheme and a constituting scheme of a converter station of a conventional DC LCC-HVDC system driven variable-frequency transformer, and proposes an underground shallow-buried variable-frequency transformer system and a constituting design thought, further establishes a grid networking support function design method based on variable-frequency transformer rotor kinetic energy, a weak AC system fault defense and protection system design method, and an LCC-HVDC driven variable-frequency transformer capacity estimation and support local wind and light field station MPPT maximum power generation estimation method.