Ked & Associates, LLP
Method and apparatus for detecting inter-phase short-circuit of three-phase motor and air conditioner including the same
The present disclosure relates to inter-phase short-circuit detection, and particularly, to a method and apparatus for detecting inter-phase short-circuit of a three-phase motor, and an air conditioner including the same. The apparatus for detecting inter-phase short-circuit of a three-phase motor includes: a power supply for rectifying AC power to supply DC power; an inverter for generating three-phase current for driving the three-phase motor using the DC power, the inverter including a plurality of switching elements including high-side switching elements and low-side switching elements corresponding to three phases, and a current sensor commonly connected to the switching elements; a gate driver for driving the plurality of switching elements; and a controller for controlling the gate driver such that current flowing through the high-side switching elements and current flowing through the low-side switching elements partially short-circuit to sense a current flowing through the current sensor and determine inter-phase short-circuit.
LG ELECTRONICS INC.
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Wonwoo Yongchan
Lee Jung