Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Observer-Based On-Line Overload Monitoring System of PMSM

상태관측기를 이용한 PMSM의 On-Line 과부하 모니터링 시스템

  • Jang, Ki-Chan (Department of Electronic And Computer Engineering, DanKook University) ;
  • Suh, Suhk-Hoon (Department of Electronic And Computer Engineering, DanKook University) ;
  • Woo, Kwang-Joon (Department of Electronic And Computer Engineering, DanKook University)
  • 장기찬 (단국대학교 대학원 전자컴퓨터공학과) ;
  • 서석훈 (단국대학교 대학원 전자컴퓨터공학과) ;
  • 우광준 (단국대학교 대학원 전자컴퓨터공학과)
  • Published : 2001.11.24
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Abstract

This paper presents observer-based on-line overload monitoring scheme for a PMSM(Permanent Magnet Synchronous Motor) drive system. Proposed scheme is to monitor overload status of motor drive system at remote place. The drive system is previously installed on main system and has no communication function. Proposed scheme consists of intelligent sensing head and monitoring part. Intelligent sensing head acquire motor 3-Phase currents and transmit data to monitoring part over serial communication interface. Monitoring part estimates motor speed using state observer. By comparing estimated speed with reference speed, we can detect motor fault. In this scheme observed information must coded and transmitted over a digital communication channel with finite capacity. We consider communication constraint as time delay and we design discrete-time observer. The proposed scheme is tested on the actual drive system.

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