Patent · US Active

Device and method for premagnetization of a power transformer in a converter system

US10554148B2 · kind B2 · utility

1Cited by

6References

14Claims

0Family size

Assignee

GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED · GB

Inventors

Thomas Brueckner · Munich, DE
Michael Bernhard Kocur · Berlin, DE
Peter Nadolny · Berlin, DE

Key dates

Filing date	Nov 20, 2018
Grant date	Feb 4, 2020
Priority date	—
Expiry date	Nov 20, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH02M5/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Provided is a premagnetization device for a converter system that is connectable to a three-phase electrical grid that has a three-phase power transformer, a converter connected to the power transformer and a circuit-breaker on the grid side of the power transformer. The premagnetization device is premagnetizes the power transformer in a state isolated from the grid. The premagnetization device uses a single-phase reference voltage (Uref) that has a fixed relationship to the grid voltage (Ugrid) with regard to the voltage parameters, in order to generate, based on the measured instantaneous reference voltage (Uref) and the known fixed parameter relationships, by actuating the converter, a three-phase alternating voltage synchronous to the grid voltage (Ugrid) on the grid side of the power transformer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.