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Deadbeat Active Disturbance Rejection Controller for the Current Control of Electric Drives in the Presence of Two-step Delay
ID：131 View Protection：ATTENDEE Updated Time：2022-05-17 09:26:13 Hits：387 Poster Presentation

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Abstract
Generally, the PWM updating causes one-step delay in the digital current control system, hence the deadbeat current control can be easily achieved by predicting the current with one more step. However, in the control system implemented on the platform based on the dSPACE DS1103, two-step delay exists in the platform. In this paper, the effect of the two-step delay on the classical deadbeat current control (DBCC) is investigated. It shows that the classical DBCC will be unstable even when the inductances are matched. Since one-step delay and two-step delay appear alternately in the system, the two-step prediction method cannot be used. As a result, a deadbeat active disturbance rejection control (DB-ADRC) is employed. A digital extended state observer (ESO) is developed to improve the system’s robustness to both the parameter variations and delay variation. Effectiveness of the proposed method is verified by experimental results.
 
Keywords
Digital Control System;Deadbeat Current Control;Active Disturbance Rejection Control;One-step Delay;Stability
Speaker
BenxiangZhang
Student Jiangsu University

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Important Date

  • Conference Date

    May 27

    2022

    to

    May 29

    2022

  • Feb 28 2022

    Draft paper submission deadline

  • May 29 2022

    Registration deadline

  • Jun 22 2022

    Contribution Submission Deadline

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IEEE Beijing Section
China Electrotechnical Society
Southeast University
Supported By
IEEE Industry Applications Society
IEEE Nanjing Section
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