대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1991년도 하계학술대회 논문집
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- Pages.559-563
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- 1991
부하토오크 관측기를 이용한 영구자석 동기전동기의 강인성 속도 제어
Robust Speed Control of Vector Controlled PMSM with Load Torque Observer
- Yoon, Byung-Do (Department of Electrical Engineering, Chung-Ang University) ;
- Kim, Yoon-Ho (Department of Electrical Engineering, Chung-Ang University) ;
- Kim, Won-Oh (Department of Electrical Engineering, Chung-Ang University) ;
- Yoon, Myung-Kyun (Department of Electrical Engineering, Chung-Ang University)
- 발행 : 1991.07.18
초록
Permanent magnet synchronous motor (PMSM) is receiving increased attention for servo drive applications in recent years because of its high torque to inertia ratio, superior power density and high efficiency. Vector-controlled PMSM has the same operating characteristics as separately excited dc motor. The drive system of servo motor is requested to have an accurate response for the speed reference and a quick recovery for the disturbance such as load torque. However the dynamics of PMSM drive change greately by parameter variations. Morever, when the unkown and inaccessible disturbances are imposed on PMSM, the drive system is given a significant effect by them. As a result, the drive system with both a fast drive performance and a reduced sensitivity to parameter variations is requested. In this paper, the robust control system of PMSM with torque feedforward using load torque observer is presented. In the proposed system, load torque is estimated by the reduced order observer, and the robust control system against load torque variation is realized using the torque feedforward. Moreover, the design of speed controller with the torque observer is discussed. Simulation results show that the proposed method is effective for suppression of parameter variations and load disturbance.
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