Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Voltage Information Effect in Speed Sensorless Control of Indution Motor

유도전동기의 센서리스 속도제어에서 상전압 정보의 영향

  • Kim, S.K. (Department of Electrical Engineering, Pusan National University) ;
  • Kim, C.H. (Department of Electrical Engineering, Pusan National University) ;
  • Lee, K.U. (Department of Electrical Engineering, Pusan National University) ;
  • Kwon, Y.A. (Department of Electrical Engineering, Pusan National University)
  • Published : 2001.07.18
Download PDF
⟨ Previous Next ⟩

Abstract

Sensorless induction motor drive is much studied due to the cost and reliability of speed and position sensors. Most sensorless algorithms are based on the mathematical modeling of induction motor including electrical variables such as phase current and voltage. Therefore, the accuracy of such variables largely affects the performance of sensorless induction motor drive. However, the phase voltage does not have to be directly monitored because of switching noise, and they may be reconstructed by using the command voltage. The output voltage of SVPWM-VSI supplying the motor has a considerable error, especially in a low speed range because SVPWM-VSI has a poor resolution in a low command voltage. Such a voltage information effect in speed sensorless control of induction motor has been investigated in this paper.

Keywords