A matrix converter-fed sensorless PMSM drive system

Tian Hua Liu, Che Kai Hung, Der F.A. Chen

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This article proposes a novel sensorless adjustable-speed PMSM system. The PMSM system is fed by an ac/ac matrix converter. A standstill starting technique and a flux/rotor estimating technique are proposed. First, by injecting a three-phase detecting voltage signal, the region of the initial shaft position of the PMSM can be obtained. Then, a flux/rotor position estimating technique is used to detect on-line the shaft angle of the PMSM. After that, as a result, a closed-loop PMSM drive system, is achieved. A 32-bit TMS320C40 digital signal processor is used to execute the starting and rotor position estimating techniques and all of the control loops including a current-loop and a speed-loop. The details are discussed in this article. Several experimental results are shown to validate the theoretical analysis.

Original languageEnglish
Pages (from-to)877-893
Number of pages17
JournalElectric Power Components and Systems
Issue number8
Publication statusPublished - 2005 Aug 1

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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