| Title |
Stator Flux Oriented Sensorless Vector Control with Phase/Gain Compensated LPF for Induction Motor |
| Authors |
박승엽(Park Seung-Yub) ; 김삼영(Kim Sam-Young) |
| Keywords |
유도전동기 ; 센서리스 ; 고정자 자속기준 ; 백터제어 ; 이득/위상 보상형 LPF ; |
| Abstract |
This paper has investigated the sensorless vector control method of induction motor based on the stator flux oriented voltage equation and the digital low pass filter (LPF) with compensator of phase/gain. The Proposed vector control method is easy to decide the stator reference voltages and control of motor, since it is based on stator flux vector But this method has sensitive structure to excessive sensor noise and PWM pulsating components of stator currents because the measured stator currents are directly used to compensate the internal resistive voltage drop at the determination of stator reference voltages. To eliminate the noise sensitive of proposed vector drive, this paper propose the digital LPF with compensator of phase/gain base on orthogonal property of stator current vector in stationary α, β reference frame. The proposed methods have been simulated and implemented on a sensorless vector drive for 750W three-phase induction motor. The simulation and experimental results demonstrate effectiveness of the proposed methods. |