Patent ID: 9702938
Date: 2017-07-11
CPC Classifications: B60L,G01R

Claim:
1. A method for detecting a phase imbalance of an electrical component in a machine due to an actual fault, comprising: receiving, at an electronic controller unit of a machine, an input vector having electrical parameter values associated with a plurality of phases of an electrical component; detecting, at the electronic controller unit, a phase imbalance in the plurality of phases; calculating, at the electronic controller unit, an imbalance ratio of the plurality of phases; applying, at the electronic controller unit, a plurality of conditions to the imbalance ratio and to the received input vector, the plurality of conditions being associated with an actual fault in the machine; determining, at the electronic controller unit, whether the detected phase imbalance is due to a controls induced phase imbalance in the machine or due to the actual fault in the electrical component of the machine when at least one of the plurality of conditions is met, the controls induced phase imbalance caused by a controls induced phenomena arising when a controls input is provided to the electronic controller unit, by an operator, including; incrementing or decrementing a counter according to a duration of the current cycle; and controlling an output of the machine, using the electronic controller unit, when the phase imbalance is due to the actual fault in the electrical component of the machine.