Patent ID: 9257922
Filing Date: 2016-02-09
CPC Classification: G01R,H02J,H02P

Claim Text:
1. A current imbalance detection system in a 3-phase power system, comprising: an inverter; a motor; a plurality of current sensors connected to wires that are configured to carry 3-phase current from the inverter to the motor; a processor coupled with the motor; and memory coupled to the processor, including instructions, which when executed by the processor, compare measurements of at least two of the plurality of current sensors and determine whether a current imbalance is present in the 3-phase power system, wherein the wires include a plurality of wire pairs and each wire pair of the plurality of wire pairs electrically connect a phase input of the inverter to the motor; and wherein the plurality of current sensors include a line current sensor on at least one wire of each wire pair.