| Title |
Improvement of Control Performance of PMSM in the Low Speed Range |
| Authors |
Jae-Sung Yu ; Bum-Su Jun ; Sun-Mo Hwang ; Yuen-Chung Kim ; Sang-Seok Lee ; Chung-Yeun Won |
| Keywords |
Permanent-magnet synchronous motor ; Full-order observer ; Low speed range |
| Abstract |
In this paper, improvement method of control performance by a full-order observer using reduced-order state equation is proposed in the low speed range. Full-order observer using reduced-order state equation is the motor speed and the disturbance torque observer. The proposed algorithm is very stable in the low speed range about 1.9[rpm]. The disturbance torque in the motor drive system degrades speed control performance in the low speed range. The proposed algorithm estimated both motor speed and disturbance torque. The estimated disturbance torque is used as a feedforward value in output of the speed controller. As a result, it improves the response of load torque in the low speed range(1.9rpm). |