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Modified Direct Torque Control for Fast Dynamics PMSM Drives fed by Three-Level NPC Inverter
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Publication Year
2021-01-01
Journal
ICEMS 2021 - 2021 24th International Conference on Electrical Machines and Systems
Publisher
Institute of Electrical and Electronics Engineers Inc.
Citation
ICEMS 2021 - 2021 24th International Conference on Electrical Machines and Systems, pp.636-640
Keyword
direct torque controlfast-dynamicspermanentmagnet synchronous motortorque regulatortorque ripple reduction
Mesh Keyword
Direct torque controlDuty-cycleFast dynamicsLow speedPermanent Magnet Synchronous MotorPermanentmagnet synchronoi motorTorque regulatorTorque ripplesTorque-ripple reductionVoltage vectors
All Science Classification Codes (ASJC)
Electrical and Electronic EngineeringMechanical EngineeringSafety, Risk, Reliability and Quality
Abstract
This paper proposes a simple control method for improving direct torque control (DTC) of permanent-magnet synchronous motor (PMSM). Although conventional torque regulator minimizes torque ripples and fixes switching frequency, it has a slow torque dynamics especially in low-speed region. This is due to the utilization of small voltage vectors during torque increment. The small voltage vectors have a small duty-cycle, which is very useful in torque ripple reduction during steady-state operation of the PMSM. However, these small voltage vectors are short compared to large voltage vectors in shorten the settling-time during dynamic operation of the PMSM especially in low-speed region. Therefore, a proposed torque regulator is used during transient-state operation of PMSM with large duty-cycle to achieve fast-dynamic response, while maintaining the conventional torque regulator merits in minimizing torque ripples during steady-state operation. Simulation results are presented to prove the effectiveness of proposed method.
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/36724
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85123918294&origin=inward
DOI
https://doi.org/10.23919/icems52562.2021.9634461
Journal URL
http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=9634173
Type
Conference
Funding
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194030202370, No. 20206910100160).
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Lee, Kyo-Beum이교범
Department of Electrical and Computer Engineering
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