Compensation of inverter nonlinear distortion effects for signal-injection-based sensorless control

Daniel Salt, David Drury, Derrick Holliday, Antonio Griffo, Parminder Sangha, Andrei Dinu

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


A simple analytical technique, which uses readily available datasheet parameters, is developed to model the low-current switching characteristics of IGBTs. Simulation and experimental results obtained using three differently rated inverters are presented to demonstrate the accuracy of the technique. The model is applied to compensate the nonlinear distortion, introduced by IGBT switching action in a three-phase inverter, of high-frequency injected voltage and current signals used in sensorless control of a permanent magnet brushless AC machine. Experimental results show that the compensation technique improves rotor position estimation by up to 20°electrical.
Original languageEnglish
Pages (from-to)2084-2092
Number of pages9
JournalIEEE Transactions on Industry Applications
Issue number5
Publication statusPublished - Sep 2011


  • inverter nonlinear distortion
  • signal injection
  • sensorless control
  • permanent-magnet machines
  • insulated gate bipolar transistors
  • voltage control
  • threshold voltage
  • switches
  • nonlinear distortion
  • logic gates
  • inverters


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