Modified Vector Control Algorithm for Increasing Partial-Load Efficiency of Fractional-Slot Concentrated-Winding Surface PM Machines

This paper presents a modified vector control algorithm for a fractional-slot concentrated-winding surface permanent magnet (SPM) machine that has been developed to maximize the machine's partial-load efficiency over a wide range of operating conditions. By increasing the amplitude of the negat...

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Vydáno v:	IEEE transactions on industry applications Ročník 44; číslo 5; s. 1543 - 1551
Hlavní autoři:	EL-Refaie, A.M., Jahns, T.M., Reddy, P.B., McKeever, J.W.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	New York IEEE 01.09.2008 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	ALGORITHMS AMPLITUDES Analytical models Concentrated windings Control theory COPPER Core loss DESIGN EFFICIENCY Finite element methods flux weakening fractional-slot windings GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE IRON Machine vector control Mathematical analysis partial-load efficiency Performance analysis PERMANENT MAGNETS permanent-magnet (PM) synchronous machine Scanning probe microscopy Stator cores STATORS surface PM (SPM) motor TORQUE vector control VECTORS Vectors (mathematics)
ISSN:	0093-9994, 1939-9367
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Abstract	This paper presents a modified vector control algorithm for a fractional-slot concentrated-winding surface permanent magnet (SPM) machine that has been developed to maximize the machine's partial-load efficiency over a wide range of operating conditions. By increasing the amplitude of the negative d -axis current, the resulting increase in the stator copper losses can be more than offset by the reduction in the iron core losses achieved by lowering the stator d -axis flux amplitude. The effectiveness of this technique has been demonstrated using both analytical models and finite element analysis for a 55-kW (peak) SPM machine design developed for a demanding set of traction drive performance requirements. For this example, the modified control strategy increases the partial-load efficiency at 20% of rated torque by > 6% at 2000 r/min compared to the maximum torque/ampere algorithm, making the machine much more attractive for its intended application.
AbstractList	This paper presents a modified vector control algorithm for a fractional-slot concentrated-winding surface permanent magnet (SPM) machine that has been developed to maximize the machine's partial-load efficiency over a wide range of operating conditions. By increasing the amplitude of the negative d -axis current, the resulting increase in the stator copper losses can be more than offset by the reduction in the iron core losses achieved by lowering the stator d -axis flux amplitude. The effectiveness of this technique has been demonstrated using both analytical models and finite element analysis for a 55-kW (peak) SPM machine design developed for a demanding set of traction drive performance requirements. For this example, the modified control strategy increases the partial-load efficiency at 20% of rated torque by > 6% at 2000 r/min compared to the maximum torque/ampere algorithm, making the machine much more attractive for its intended application.
Author	Jahns, T.M. McKeever, J.W. EL-Refaie, A.M. Reddy, P.B.
Author_xml	– sequence: 1 givenname: A.M. surname: EL-Refaie fullname: EL-Refaie, A.M. organization: Electr. Machines & Drives Lab., Gen. Electr. Global Res. Center, Niskayuna, NY – sequence: 2 givenname: T.M. surname: Jahns fullname: Jahns, T.M. – sequence: 3 givenname: P.B. surname: Reddy fullname: Reddy, P.B. – sequence: 4 givenname: J.W. surname: McKeever fullname: McKeever, J.W.
BackLink	https://www.osti.gov/biblio/1037681$$D View this record in Osti.gov
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Cites_doi	10.1109/TMAG.2002.802296 10.1109/41.315269 10.1109/TEC.2005.858094 10.1109/28.855963 10.1109/TIA.2005.847312 10.1109/TIA.2003.810635 10.1109/TIA.2006.870043 10.1109/IEMDC.2003.1211284 10.1049/ip-epa:19941470 10.1109/TIE.2005.851595 10.1109/60.900501 10.1109/TEC.2002.1009476 10.1109/28.887213
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SubjectTerms	ALGORITHMS AMPLITUDES Analytical models Concentrated windings Control theory COPPER Core loss DESIGN EFFICIENCY Finite element methods flux weakening fractional-slot windings GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE IRON Machine vector control Mathematical analysis partial-load efficiency Performance analysis PERMANENT MAGNETS permanent-magnet (PM) synchronous machine Scanning probe microscopy Stator cores STATORS surface PM (SPM) motor TORQUE vector control VECTORS Vectors (mathematics)
Title	Modified Vector Control Algorithm for Increasing Partial-Load Efficiency of Fractional-Slot Concentrated-Winding Surface PM Machines
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