Speed-sensorless DTC-SVM for matrix converter drives with simple nonlinearity compensation

Kyo Beum Lee, Frede Blaabjerg, Tae Woong Yoon

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

This paper presents a new method to improve the sensorless performance of matrix converter drives using a parameter estimation scheme. To improve low-speed sensorless performance, the nonlinearities of a matrix converter drive such as commutation delays, turn-on and turn-off times of switching devices, and ON-state switching device voltage drop is modeled using p-q-r transformation and compensated using a reference current control scheme. To eliminate the input current distortion due to the input voltage unbalance, a simple method using p-q-r transformation is also presented. The proposed compensation method is applied for high performance induction motor drives using a 3-kW matrix converter system without a speed sensor. Experimental results are shown to illustrate the feasibility of the proposed strategy.

Original languageEnglish
Pages (from-to)1639-1649
Number of pages11
JournalIEEE Transactions on Industry Applications
Volume43
Issue number6
DOIs
Publication statusPublished - 2007 Nov

Keywords

  • Adaptive estimator
  • Direct torque control with space vector modulation (DTC-SVM)
  • Matrix converter
  • Nonlinearity compensation
  • Sensorless control
  • p-q-r transformation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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