Model Predictive Direct Speed Control of Permanent-Magnet Synchronous Motors with Voltage Error Compensation

Traditional strategies for model predictive direct speed control of permanent-magnet synchronous motors are known to be vulnerable to voltage errors. In this paper, we present a novel approach that compensates for voltage errors arising from inverter nonlinearity and bus voltage uncertainties, while...

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Main Authors: Lixiao Gao, Feng Chai
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/16/13/5128
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author Lixiao Gao
Feng Chai
author_facet Lixiao Gao
Feng Chai
author_sort Lixiao Gao
collection DOAJ
description Traditional strategies for model predictive direct speed control of permanent-magnet synchronous motors are known to be vulnerable to voltage errors. In this paper, we present a novel approach that compensates for voltage errors arising from inverter nonlinearity and bus voltage uncertainties, while remaining unaffected by parameter errors. Initially, we conducted a detailed analysis to assess the impact of inverter nonlinearity and bus voltage uncertainties. Subsequently, we proposed a voltage error compensation strategy based on bus voltage identification. Using this strategy, the identified voltage error is effectively compensated within candidate voltage vectors. To validate the effectiveness of our proposed method, we conducted comprehensive experiments. The results demonstrate notable improvements compared with traditional model predictive control. Specifically, our method successfully reduces the total harmonic distortion of phase currents from 23.2% and 49.6% to 11.6% and 13.9%, respectively. Additionally, it accurately identifies voltage errors, even in the presence of parameter errors. Overall, our proposed method presents a robust and reliable solution for addressing voltage errors, thereby enhancing the performance and stability of the system.
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spelling doaj.art-282c5103c2484c88b7a09ca2e6ce725c2023-11-18T16:30:51ZengMDPI AGEnergies1996-10732023-07-011613512810.3390/en16135128Model Predictive Direct Speed Control of Permanent-Magnet Synchronous Motors with Voltage Error CompensationLixiao Gao0Feng Chai1School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaTraditional strategies for model predictive direct speed control of permanent-magnet synchronous motors are known to be vulnerable to voltage errors. In this paper, we present a novel approach that compensates for voltage errors arising from inverter nonlinearity and bus voltage uncertainties, while remaining unaffected by parameter errors. Initially, we conducted a detailed analysis to assess the impact of inverter nonlinearity and bus voltage uncertainties. Subsequently, we proposed a voltage error compensation strategy based on bus voltage identification. Using this strategy, the identified voltage error is effectively compensated within candidate voltage vectors. To validate the effectiveness of our proposed method, we conducted comprehensive experiments. The results demonstrate notable improvements compared with traditional model predictive control. Specifically, our method successfully reduces the total harmonic distortion of phase currents from 23.2% and 49.6% to 11.6% and 13.9%, respectively. Additionally, it accurately identifies voltage errors, even in the presence of parameter errors. Overall, our proposed method presents a robust and reliable solution for addressing voltage errors, thereby enhancing the performance and stability of the system.https://www.mdpi.com/1996-1073/16/13/5128model predictive controlinverter nonlinearityvoltage error compensationpermanent-magnet synchronous motors
spellingShingle Lixiao Gao
Feng Chai
Model Predictive Direct Speed Control of Permanent-Magnet Synchronous Motors with Voltage Error Compensation
Energies
model predictive control
inverter nonlinearity
voltage error compensation
permanent-magnet synchronous motors
title Model Predictive Direct Speed Control of Permanent-Magnet Synchronous Motors with Voltage Error Compensation
title_full Model Predictive Direct Speed Control of Permanent-Magnet Synchronous Motors with Voltage Error Compensation
title_fullStr Model Predictive Direct Speed Control of Permanent-Magnet Synchronous Motors with Voltage Error Compensation
title_full_unstemmed Model Predictive Direct Speed Control of Permanent-Magnet Synchronous Motors with Voltage Error Compensation
title_short Model Predictive Direct Speed Control of Permanent-Magnet Synchronous Motors with Voltage Error Compensation
title_sort model predictive direct speed control of permanent magnet synchronous motors with voltage error compensation
topic model predictive control
inverter nonlinearity
voltage error compensation
permanent-magnet synchronous motors
url https://www.mdpi.com/1996-1073/16/13/5128
work_keys_str_mv AT lixiaogao modelpredictivedirectspeedcontrolofpermanentmagnetsynchronousmotorswithvoltageerrorcompensation
AT fengchai modelpredictivedirectspeedcontrolofpermanentmagnetsynchronousmotorswithvoltageerrorcompensation