TORQUE CONTROL METHOD OF MOTOR BASED ON MODEL PREDICTION CONTROL

摘要

PPROBLEM TO BE SOLVED: To solve a problem, wherein there is proposed a technique for speedily changing voltage phase, on the basis of a numerical expression of a motor as a technique for enabling high-performance torque (current) control, even in a motor drive region where conventional vector control is difficult to be applied, however, since this technique is based on a numerical expression model at a stationary period, restrictions may be imposed on its current (torque) response, and the optimization of a switching vector to be selected cannot be compensated, even at the stationary time. PSOLUTION: On the basis of a control system for controlling the rotation operation of the motor, the current flowing in the motor, the position of a rotor magnetic pole, and the rotation speed information, there is selected, as a solution for the optimization of problem, the switching vector in which an error of a future torque (current) behavior, calculated on the basis of a motor model whose transient state is taken into consideration is minimized, with respect to a torque (current) command value necessary for controlling the rotation operation of the motor with high performance, and thereby high-response torque (current) control is achieved, even in a speed range which may be the problem by inputting the switching vector into the control system. PCOPYRIGHT: (C)2008,JPO&INPIT