MTPA MTPA CONTROL METHOD OF PERMANENT MAGNET SYNCHRONOUS MOTOR USING OPTIMIZATION TECHNIQUE

摘要

MTPA control method of a permanent magnet synchronous motor using an optimization technique according to an embodiment of the present invention, the step of measuring the current (I s ) supplied to the stator (stator), copper loss using the measured current (I S ) Calculating (Copper Loss)(P cu ), defining a correction factor (Q) using the calculated copper loss, and applying the calculated correction factor (Q) to a Gradient Descent Algorithm to each current angle and following the instruction β MTPA . According to the present invention, it is possible to follow the optimum current angle at which copper loss is minimized within a short time under all operating conditions even in a situation where an error occurs in the resolver signal for measuring the constant number of the motor or the rotor position.