Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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A Improved Stator Flux Estimation for Sensorless DTC of Induction Motors

유도전동기 센서리스 직접토크제어를 위한 향상된 고정자 자속의 추정

  • La Koang-Kyun (Dept. of Electrical Engineering, Hanyang University) ;
  • Shin Myoung-Ho (Dept. of Electrical Engineering, Hanyang University) ;
  • Hyun Dong-Seok (Dept. of Electrical Engineering, Hanyang University)
  • 나광균 (한양대학교 전기공학과) ;
  • 신명호 (한양대학교 전기공학과) ;
  • 현동석 (한양대학교 전기공학과)
  • Published : 2001.07.01
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Abstract

Direct Torque Control has the fast torque and flux dynamic response as we know. This dynamic performance is realized by the estimation of electromagnetic torque and stator flux linkages. Generally, the stator flux estimation is based on the stator voltage equation. The equation uses a pure integrator. If the equation is used without an encoder in Direct Torque Control, there is the drift problem. It is same to sensorless Stator Flux Orientation Control (SFO). In this paper a programmable low pass filter (LPF) is proposed for solving the problem in Direct Torque Control.

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