Lowe Hauptman & Ham, LLP
Method and system for detecting fault of serial coil type permanent magnet motor
A method and system for detecting a fault of a serial coil type permanent magnet motor includes driving the motor based on a predefined current reference value, detecting a phase current vector of the motor, and calculating a current compensation value for removing a negative sequence component of the motor based on the phase current vector. The current compensation value is provided to a negative sequence current controller for calculating a faulty phase and a degree of a fault of the motor using the output of the negative sequence current controller and a fault model to which induced magnetic flux variations in a specific slot of a specific faulty phase of the motor and other slots of the same phase as the specific phase are applied, and applying a current reference value to which the calculated faulty phase and degree of fault are applied.
Korea Electronics Technology Institute
H H G
H02H H02P G01R
inventional inventional inventional
Jin Hong Joon Sung Bon Gwan In Soung Jun Hyuk
Kim Park Gu Jung Choi