Speed sensorless direct torque control of 3-level inverter-fed induction motor drive based on optimized switching table

Zhang, Y; Zhao, Z; Zhu, J; Xu, W; Dorrell, DG

Speed sensorless direct torque control of 3-level inverter-fed induction motor drive based on optimized switching table

Zhang, Y Zhao, Z Zhu, J

Xu, W Dorrell, DG

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Publication Type:: Conference Proceeding
Citation:: IECON Proceedings (Industrial Electronics Conference), 2009, pp. 1316 - 1321
Issue Date:: 2009-12-01

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Field	Value	Language
dc.contributor.author	Zhang, Y	en_US
dc.contributor.author	Zhao, Z	en_US
dc.contributor.author	Zhu, J https://orcid.org/0000-0002-9763-4047	en_US
dc.contributor.author	Xu, W	en_US
dc.contributor.author	Dorrell, DG https://orcid.org/0000-0001-8060-3386	en_US
dc.date.issued	2009-12-01	en_US
dc.identifier.citation	IECON Proceedings (Industrial Electronics Conference), 2009, pp. 1316 - 1321	en_US
dc.identifier.uri	http://hdl.handle.net/10453/10978
dc.description.abstract	Three-level neutral-point-clamped (NPC) inverters are very appropriate for high-power adjustable-speed drive applications. Direct torque control is characterized by the merits of fast response, simple structure and strong robustness to motor parameters variations. This paper presents a 3-level inverter-fed direct torque controlled (DTC) induction motor (IM) drive based on optimized switching table. The problems of high voltage jump, smooth vector switching and neutral point balance are investigated and solved by introducing appropriate intermediate vectors. Furthermore, a speed-adaptive flux observer is employed to enhance the performance of the system by estimating the state variables including the stator flux and state current. Large starting current, which can occur in conventional DTC drives, is controlled effectively by introducing pre-excitation of the stator flux. Both simulation and experimental results are presented to verify the effectiveness of the proposed schemes introduced in this paper. ©2009 IEEE.	en_US
dc.relation.ispartof	IECON Proceedings (Industrial Electronics Conference)	en_US
dc.relation.isbasedon	10.1109/IECON.2009.5414650	en_US
dc.title	Speed sensorless direct torque control of 3-level inverter-fed induction motor drive based on optimized switching table	en_US
dc.type	Conference Proceeding
utslib.for	0902 Automotive Engineering	en_US
dc.location.activity	Porto, Portugal	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US

Abstract:

Three-level neutral-point-clamped (NPC) inverters are very appropriate for high-power adjustable-speed drive applications. Direct torque control is characterized by the merits of fast response, simple structure and strong robustness to motor parameters variations. This paper presents a 3-level inverter-fed direct torque controlled (DTC) induction motor (IM) drive based on optimized switching table. The problems of high voltage jump, smooth vector switching and neutral point balance are investigated and solved by introducing appropriate intermediate vectors. Furthermore, a speed-adaptive flux observer is employed to enhance the performance of the system by estimating the state variables including the stator flux and state current. Large starting current, which can occur in conventional DTC drives, is controlled effectively by introducing pre-excitation of the stator flux. Both simulation and experimental results are presented to verify the effectiveness of the proposed schemes introduced in this paper. ©2009 IEEE.

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http://hdl.handle.net/10453/10978