4.8 Article

Time-Optimal Voltage Vector Transition Scheme for Six-Step Operation of PMSM

期刊

IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 36, 期 5, 页码 5724-5735

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2020.3028861

关键词

Voltage control; Torque; Trajectory; Inverters; Harmonic analysis; Switches; Steady-state; Flux trajectory; instantaneous voltage vector; permanent-magnet synchronous machine; six-step operation; voltage angle control

资金

  1. Brain Korea 21 Plus Project in 2020

向作者/读者索取更多资源

This article analyzes the instantaneous flux trajectory and voltage vector of a permanent-magnet synchronous machine in the six-step operation, proposing a time-optimal voltage vector transition scheme to enhance dynamic performance significantly. Simulation and experimental results validate the effectiveness of the proposed scheme, showing over 50% reduction in settling time and 60% reduction in peak current compared to conventional methods.
This article analyzes the instantaneous flux trajectory of a permanent-magnet synchronous machine (PMSM) in the six-step operation. Not only the flux dynamics but also the instantaneous voltage vector are included in the analysis. Based on the analysis, a time-optimal voltage vector transition scheme is proposed for the six-step operation of a PMSM. In the proposed scheme, a few steps are added in the transition of the voltage vectors to bring additional degrees of freedom, and they can enhance the dynamic performance conspicuously under the given current constraint. Simulation and experimental results are provided to verify the proposed scheme. For the stepwise torque command, the proposed scheme saves the settling time more than 50% with 60% reduction of the peak current compared to the conventional transition method.

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