Patent ID: 8730633
Filing Date: 2014-05-20
Classification: H02H

Abstract:
1. A method for protecting a multi-phase autotransformer for an aircraft, comprising steps of: receiving at least one value of current input into a first phase of the autotransformer, at least one value of current output from the first phase, at least one value of current input into a second phase of the autotransformer, and at least one value of current output from the second phase; determining, at least as a function of the values of current input into and output from the first phase and of the values of current input into and output from the second phase, at least one value of current representative of an operation of the first phase and at least one value of current representative of an operation of the second phase; determining, at least as a function of the values of currents representative of the operation of the first and second phases, at least one value representative of a homopolar current flowing in the first phase; comparing, in a first comparison, the value representative of the homopolar current flowing in the first phase with a first predetermined threshold value; and controlling the values of current input into the phases of the autotransformer as a function of the first comparison.