Online Current Loop Tuning for Permanent Magnet Synchronous Servo Motor Drives with Deadbeat Current Control

High bandwidths and accurate current controls are essential in high-performance permanent magnet synchronous (PMSM) servo drives. Compared with conventional proportional−integral control, deadbeat current control can considerably enhance the current control loop bandwidth. However, because...

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Main Authors: Zih-Cing You, Cheng-Hong Huang, Sheng-Ming Yang
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/18/3555
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author Zih-Cing You
Cheng-Hong Huang
Sheng-Ming Yang
author_facet Zih-Cing You
Cheng-Hong Huang
Sheng-Ming Yang
author_sort Zih-Cing You
collection DOAJ
description High bandwidths and accurate current controls are essential in high-performance permanent magnet synchronous (PMSM) servo drives. Compared with conventional proportional−integral control, deadbeat current control can considerably enhance the current control loop bandwidth. However, because the deadbeat current control performance is strongly affected by the variations in the electrical parameters, tuning the controller gains to achieve a satisfactory current response is crucial. Because of the prompt current response provided by the deadbeat controller, the gains must be tuned within a few control periods. Therefore, a fast online current loop tuning scheme is proposed in this paper. This scheme can accurately identify the controller gain in one current control period because the scheme is directly derived from the discrete-time motor model. Subsequently, the current loop is tuned by updating the deadbeat controller with the identified gains within eight current control periods or a speed control period. The experimental results prove that in the proposed scheme, the motor current can simultaneously have a critical-damped response equal to its reference in two current control periods. Furthermore, satisfactory current response is persistently guaranteed because of an accurate and short time delay required for the current loop tuning.
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spelling doaj.art-3b67ee9d0bd74d9ab856a84c0f1fef272022-12-22T01:58:39ZengMDPI AGEnergies1996-10732019-09-011218355510.3390/en12183555en12183555Online Current Loop Tuning for Permanent Magnet Synchronous Servo Motor Drives with Deadbeat Current ControlZih-Cing You0Cheng-Hong Huang1Sheng-Ming Yang2Electrical Engineering, National Taipei University of Technology, Taipei 10608, TaiwanElectrical Engineering, National Taipei University of Technology, Taipei 10608, TaiwanElectrical Engineering, National Taipei University of Technology, Taipei 10608, TaiwanHigh bandwidths and accurate current controls are essential in high-performance permanent magnet synchronous (PMSM) servo drives. Compared with conventional proportional−integral control, deadbeat current control can considerably enhance the current control loop bandwidth. However, because the deadbeat current control performance is strongly affected by the variations in the electrical parameters, tuning the controller gains to achieve a satisfactory current response is crucial. Because of the prompt current response provided by the deadbeat controller, the gains must be tuned within a few control periods. Therefore, a fast online current loop tuning scheme is proposed in this paper. This scheme can accurately identify the controller gain in one current control period because the scheme is directly derived from the discrete-time motor model. Subsequently, the current loop is tuned by updating the deadbeat controller with the identified gains within eight current control periods or a speed control period. The experimental results prove that in the proposed scheme, the motor current can simultaneously have a critical-damped response equal to its reference in two current control periods. Furthermore, satisfactory current response is persistently guaranteed because of an accurate and short time delay required for the current loop tuning.https://www.mdpi.com/1996-1073/12/18/3555deadbeat current controlPMSM servo motor drivesauto tuningparameter identification
spellingShingle Zih-Cing You
Cheng-Hong Huang
Sheng-Ming Yang
Online Current Loop Tuning for Permanent Magnet Synchronous Servo Motor Drives with Deadbeat Current Control
Energies
deadbeat current control
PMSM servo motor drives
auto tuning
parameter identification
title Online Current Loop Tuning for Permanent Magnet Synchronous Servo Motor Drives with Deadbeat Current Control
title_full Online Current Loop Tuning for Permanent Magnet Synchronous Servo Motor Drives with Deadbeat Current Control
title_fullStr Online Current Loop Tuning for Permanent Magnet Synchronous Servo Motor Drives with Deadbeat Current Control
title_full_unstemmed Online Current Loop Tuning for Permanent Magnet Synchronous Servo Motor Drives with Deadbeat Current Control
title_short Online Current Loop Tuning for Permanent Magnet Synchronous Servo Motor Drives with Deadbeat Current Control
title_sort online current loop tuning for permanent magnet synchronous servo motor drives with deadbeat current control
topic deadbeat current control
PMSM servo motor drives
auto tuning
parameter identification
url https://www.mdpi.com/1996-1073/12/18/3555
work_keys_str_mv AT zihcingyou onlinecurrentlooptuningforpermanentmagnetsynchronousservomotordriveswithdeadbeatcurrentcontrol
AT chenghonghuang onlinecurrentlooptuningforpermanentmagnetsynchronousservomotordriveswithdeadbeatcurrentcontrol
AT shengmingyang onlinecurrentlooptuningforpermanentmagnetsynchronousservomotordriveswithdeadbeatcurrentcontrol