A Commutation Optimization Strategy for High-Speed Brushless DC Drives With Voltage Source Inverter

Lu Wang, Ziqiang Zhu, Hong Bin, Liming Gong

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The control performance of Hall sensor-based high-speed brushless dc (BLdc) motor drives depends heavily on the accuracy of Hall sensor signals. Due to the existence of Hall signal errors, the system may operate under unbalanced conditions that will lead to asymmetric currents and high-torque ripple. For high-speed BLdc drive, using voltage source inverter (VSI) with the pulsewidth modulation (PWM) technique will also lead to PWM update delay that causes inaccurate commutation. In this article, two Hall signal errors, i.e., misaligned and uneven Hall signal errors, are investigated and a Hall signal balancing strategy is developed to detect Hall signal errors and regenerate balanced Hall signals. A novel PWM generation scheme is then proposed to eliminate the PWM update delay when using traditional VSI. Both simulation and experiment results have verified the effectiveness of the proposed strategy.
Original languageEnglish
Pages (from-to)4722-4732
Number of pages11
JournalIEEE Transactions on Industry Applications
Volume58
Issue number4
Early online date26 Apr 2022
DOIs
Publication statusPublished - Jul 2022
Externally publishedYes

Keywords

  • Brushless dc (BLdc) drive
  • commutation balancing strategy
  • Hall signal error
  • permanent magnet motor
  • pulsewidth modulation (PWM)

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