Multi-level motor drives to eliminate torque ripple with adaptive dead-time compensation

Shuhei Shimmyo, Kazuaki Yuuki, Kouhei Ohnishi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper discusses multi-level motor drives to suppress torque ripples of brushless DC motors (BLDC) with an adaptive dead-time compensation. Traditionally, BLDCs are widely driven by two-level inverters, and they are driven by the pulse-width modulation (PWM). Although high switching frequencies can reduce current ripples by the switching, voltage errors caused by dead-times become large; there are trade-off relationships. In our previous study, it was revealed that multi-level inverters could reduce distortions of torques at optimal frequencies. In addition, voltage errors caused by dead-times can be compensated by using a feedforward compensation or a disturbance observer (DOB). Since modeling errors are remained even if designers manage to tune parameters, perfect compensations are difficult in feedforward compensations. In disturbance observers, although offset values of voltage errors can be compensated perfectly, it is impossible to compensate 6k-th order components. In this paper, an adaptive dead-time compensation is applied for multi-level inverters. Here, a value of a voltage error is estimated by using an observer, and it is used to calculate an adaptive feedforward value. The validity of proposed system is confirmed by simulation and experiments.

Original languageEnglish
Title of host publication2016 IEEE 14th International Workshop on Advanced Motion Control, AMC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages269-275
Number of pages7
ISBN (Electronic)9781479984640
DOIs
Publication statusPublished - 2016 Jun 20
Event14th IEEE International Workshop on Advanced Motion Control, AMC 2016 - Auckland, New Zealand
Duration: 2016 Apr 222016 Apr 24

Other

Other14th IEEE International Workshop on Advanced Motion Control, AMC 2016
CountryNew Zealand
CityAuckland
Period16/4/2216/4/24

ASJC Scopus subject areas

  • Control and Systems Engineering

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  • Cite this

    Shimmyo, S., Yuuki, K., & Ohnishi, K. (2016). Multi-level motor drives to eliminate torque ripple with adaptive dead-time compensation. In 2016 IEEE 14th International Workshop on Advanced Motion Control, AMC 2016 (pp. 269-275). [7496362] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/AMC.2016.7496362