A Dynamic Compensation Method for Time Delay Effects of High-Speed PMSM Sensorless Digital Drive System

The PWM update is inevitably delayed one sampling period due to the time-consuming calculation of the digital processor, the delay time products a severe phase and amplitude error in output voltage when the PMSM is running at high speed and the carried ratio is insufficient, affecting the stability...

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Bibliographic Details
Published in2019 22nd International Conference on Electrical Machines and Systems (ICEMS) pp. 1 - 5
Main Authors Lv, Wei, Huang, Keyuan, Wu, Haokun, MO, Xiaoling, Shen, Mingbao
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2019
Subjects
Delay effects
Delays
Dynamic Compensation Strategy
High Speed PMSM
Hysteresis motors
Permanent magnet motors
Pulse width modulation
PWM update delayed
Regulators
Rotors
Sensor-less Digital Drive System
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Summary:The PWM update is inevitably delayed one sampling period due to the time-consuming calculation of the digital processor, the delay time products a severe phase and amplitude error in output voltage when the PMSM is running at high speed and the carried ratio is insufficient, affecting the stability of the high-speed PMSM sensor-less drive system. Against its defects, a dynamic compensation strategy is implemented in this paper, it compensates for the phase and amplitude error with the PI regulator constructed by the difference of the d-q axis voltage between the delayed state and the ideal state. Compared with the traditional method, this dynamic strategy has a simpler calculation and greatly improves the stability of the high-speed PMSM sensor-less drive system. Finally, the compensation method proposed in this paper is successfully verified by the experiment results.
ISSN:2642-5513
DOI:10.1109/ICEMS.2019.8921970