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Design, Optimization and Comparison of Spoke-Type Synchronous Motor and Permanent-Magnet Assisted Synchronous Reluctance Motor in Home Appliance Applications = = Design, Optimierung und Vergleich von Speichen-Synchronmotoren und Permanent Magnet Unter Stutzten Synchron-Reluktanzmotoren fur Haushaltsgerate /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Design, Optimization and Comparison of Spoke-Type Synchronous Motor and Permanent-Magnet Assisted Synchronous Reluctance Motor in Home Appliance Applications =/ Shouhui Ni.
Reminder of title:	Design, Optimierung und Vergleich von Speichen-Synchronmotoren und Permanent Magnet Unter Stutzten Synchron-Reluktanzmotoren fur Haushaltsgerate /
Author:	Ni, Shouhui,
Description:	1 electronic resource (169 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 83-09, Section: B.
Contained By:	Dissertations Abstracts International83-09B.
Subject:	Design optimization. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29004502
ISBN:	9798209788034

Design, Optimization and Comparison of Spoke-Type Synchronous Motor and Permanent-Magnet Assisted Synchronous Reluctance Motor in Home Appliance Applications = = Design, Optimierung und Vergleich von Speichen-Synchronmotoren und Permanent Magnet Unter Stutzten Synchron-Reluktanzmotoren fur Haushaltsgerate /
Ni, Shouhui,

Design, Optimization and Comparison of Spoke-Type Synchronous Motor and Permanent-Magnet Assisted Synchronous Reluctance Motor in Home Appliance Applications =Design, Optimierung und Vergleich von Speichen-Synchronmotoren und Permanent Magnet Unter Stutzten Synchron-Reluktanzmotoren fur Haushaltsgerate /Shouhui Ni. - 1 electronic resource (169 pages)

Source: Dissertations Abstracts International, Volume: 83-09, Section: B.

In recent years, an interesting trend of the design of electrical motors has been the development of rare-earth-free motors or such of reduced rare-earth content with high efficiency and low cost as rare-earth material usually suffers from high cost and unstable supply. Potential candidates include switched reluctance motors, synchronous reluctance motors and interior permanent magnet synchronous motors with ferrite magnets.In this thesis, research is focused on interior permanent magnet synchronous motors with ferrite magnets. Two types of motors were selected and designed for application in a drum drive for washing machines: the spoke-type synchronous motor and the permanent-magnet assisted synchronous reluctance motor. The spoke-type synchronous motor can achieve higher flux density in the air gap due to the flux concentrating effects of its structure. The permanent-magnet assisted synchronous reluctance motor usually render a higher saliency ratio, which means larger difference between the inductances in d- and q-axes leading to an increase of reluctance torque.An automatic optimization procedure based on parametric finite element model and different optimization algorithms was established in order to perform a fair comparison of both types of motors. The evaluations of performance were based on two typical operating points: one with high torque and low speed and the other one with low torque and high speed. Various constraints have been taken into account by adding penalty functions into the objective function, classified into priority levels labeled with different penalty coefficients. Three optimization algorithms have been considered: a genetic algorithm, the Nelder-Mead method and the quasi-Newton method, representing a stochastic algorithm, a non-derivative based deterministic and a deterministic algorithm with derivative information, respectively. Different configurations formed by combining the named algorithms have been tested and compared. Finally, the combination of a genetic algorithm and the Nelder-Mead method was chosen for further analyses.Based on the optimization procedure, both of spoke-type synchronous motor and permanent-magnet assisted synchronous reluctance motor were laid out, and final designs of them have been achieved. For the spoke-type synchronous motor, different rotor layouts have been discussed in aspects of mechanical strength and resilience against demagnetization. The difference between single- and double-layer windings have also been investigated, including the interesting result that the design with double-layer winding has better performance of anti-demagnetization than that with single-layer winding. The effect of an extended rotor stack has also been investigated. Considering the further mechanical issues at high speed caused by larger distance between the two bearings, this design has however not been prosecuted in detail. For the permanent magnet-assisted synchronous reluctance motor, the design procedure followed the same optimization process. Before manufacturing, the final designs have been double-checked in aspects of mechanical, anti-demagnetization, torque, and thermal performance.Finally, a test bench was set up. No load, short-circuit, load, and thermal tests have been carried out for both motors. The results validate the optimization procedure and simulations of this thesis. A summary was then given based on the comparison of the results of experiments and simulations.

English

ISBN: 9798209788034Subjects--Topical Terms:

3681984
Design optimization.

Design, Optimization and Comparison of Spoke-Type Synchronous Motor and Permanent-Magnet Assisted Synchronous Reluctance Motor in Home Appliance Applications = = Design, Optimierung und Vergleich von Speichen-Synchronmotoren und Permanent Magnet Unter Stutzten Synchron-Reluktanzmotoren fur Haushaltsgerate /
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245 1 0 $a Design, Optimization and Comparison of Spoke-Type Synchronous Motor and Permanent-Magnet Assisted Synchronous Reluctance Motor in Home Appliance Applications = $b Design, Optimierung und Vergleich von Speichen-Synchronmotoren und Permanent Magnet Unter Stutzten Synchron-Reluktanzmotoren fur Haushaltsgerate / $c Shouhui Ni.
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300 $a 1 electronic resource (169 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 83-09, Section: B.
500 $a Advisors: Schafer, Uwe; Schuhmann, Rolf; Wang, Shanming Committee members: Dieckerhof, Sibylle.
502 $b Ph.D. $c Technische Universitaet Berlin (Germany) $d 2021.
520 $a In recent years, an interesting trend of the design of electrical motors has been the development of rare-earth-free motors or such of reduced rare-earth content with high efficiency and low cost as rare-earth material usually suffers from high cost and unstable supply. Potential candidates include switched reluctance motors, synchronous reluctance motors and interior permanent magnet synchronous motors with ferrite magnets.In this thesis, research is focused on interior permanent magnet synchronous motors with ferrite magnets. Two types of motors were selected and designed for application in a drum drive for washing machines: the spoke-type synchronous motor and the permanent-magnet assisted synchronous reluctance motor. The spoke-type synchronous motor can achieve higher flux density in the air gap due to the flux concentrating effects of its structure. The permanent-magnet assisted synchronous reluctance motor usually render a higher saliency ratio, which means larger difference between the inductances in d- and q-axes leading to an increase of reluctance torque.An automatic optimization procedure based on parametric finite element model and different optimization algorithms was established in order to perform a fair comparison of both types of motors. The evaluations of performance were based on two typical operating points: one with high torque and low speed and the other one with low torque and high speed. Various constraints have been taken into account by adding penalty functions into the objective function, classified into priority levels labeled with different penalty coefficients. Three optimization algorithms have been considered: a genetic algorithm, the Nelder-Mead method and the quasi-Newton method, representing a stochastic algorithm, a non-derivative based deterministic and a deterministic algorithm with derivative information, respectively. Different configurations formed by combining the named algorithms have been tested and compared. Finally, the combination of a genetic algorithm and the Nelder-Mead method was chosen for further analyses.Based on the optimization procedure, both of spoke-type synchronous motor and permanent-magnet assisted synchronous reluctance motor were laid out, and final designs of them have been achieved. For the spoke-type synchronous motor, different rotor layouts have been discussed in aspects of mechanical strength and resilience against demagnetization. The difference between single- and double-layer windings have also been investigated, including the interesting result that the design with double-layer winding has better performance of anti-demagnetization than that with single-layer winding. The effect of an extended rotor stack has also been investigated. Considering the further mechanical issues at high speed caused by larger distance between the two bearings, this design has however not been prosecuted in detail. For the permanent magnet-assisted synchronous reluctance motor, the design procedure followed the same optimization process. Before manufacturing, the final designs have been double-checked in aspects of mechanical, anti-demagnetization, torque, and thermal performance.Finally, a test bench was set up. No load, short-circuit, load, and thermal tests have been carried out for both motors. The results validate the optimization procedure and simulations of this thesis. A summary was then given based on the comparison of the results of experiments and simulations.
520 $a In den letzten Jahren ist ein interessanter Trend beim Design von Motoren mit hohem Wirkungsgrad und geringen Kosten die Entwicklung von Motoren mit geringem Seltenerd-Anteil und solchen ohne Seltenerdmagnete, da diese Materialien hohe Kosten verursachen und die Versorgungskette zeitweise instabil wurde. Zu den potenziellen Kandidaten zur Losung des Problems zahlen geschaltete Reluktanzmotoren, Synchron-Reluktanzmotoren und Synchronmotoren mit innenliegenden Ferritmagneten.Diese Arbeit beschreibt eine Auslegung auf Basis des letztgenannten Prinzips. Fur das Antriebssystem einer Waschmaschinen-Trommel wurden zwei Motortypen ausgewahlt und erforscht, namlich der Speichen-Synchronmotor und der Permanentmagnet-unterstutzte Synchron-Reluktanzmotor. Der Speichen-Synchronmotor kann aufgrund der Flusskonzentrationseffekte der Struktur eine hohere Flussdichte im Luftspalt erreichen. Der Permanentmagnet-unterstutzte Synchronmotor hat normalerweise eine starkere magnetische Unsymmetrie, was einen groseren Unterschied zwischen den Induktivitaten in der d- und q-Achsen bewirkt und so zu einem hoheren Reluktanz-Drehmoment fuhrt.Um einen fairen Vergleich der beiden Motortypen durchfuhren zu konnen, wurde ein automatisches Optimierungsverfahren ausgewahlt, das auf parametrischen Finite-Elemente-Modellen und verschiedenen Optimierungsalgorithmen basiert. Die Bewertung der Systeme basiert auf zwei typischen Betriebspunkten. Einer davon hat ein hoheres Drehmoment und eine niedrigere Drehzahl, wahrend der andere ein niedrigeres Drehmoment und eine hohere Drehzahl hat. Randbedingungen wurden durch Hinzufugen von Straffunktionen zur Zielfunktion berucksichtigt, und anhand von unterschiedlichen Strafkoeffizienten priorisiert. Es wurden drei Optimierungsalgorithmen betrachtet: ein genetischer Algorithmus, die Nelder-Mead-methode und die Quasi-Newton-Methode, die jeweils einen stochastischen, einen deterministischen, aber differentialfreien und einen deterministischen Algorithmus unter Nutzung der Differentiale darstellen. Verschiedene Konfigurationen, die durch Kombinieren verschiedener Algorithmen entstehen, wurden getestet und miteinander verglichen. Schlieslich wurde die Kombination des genetischen Algorithmus und Nelder-Mead-methode als endgultige Losung fur weitere Analysen ausgewahlt.Basierend auf diesem Optimierungsverfahren wurden sowohl ein Speichen-Synchronmotor als auch ein Permanentmagnet-unterstutzter Synchron-Reluktanzmotor berechnet und endgultige Auslegungen fur beide durchgefuhrt. Fur die Speichen-Synchronmotoren wurden verschiedene Rotoranordnungen unter den gegenlaufigen Aspekten der mechanischen und der Entmagnetisierungs-Festigkeit bewertet. Berechnungen mit einschichtigen Wicklungen und zweischichtigen Wicklungen zeigen, dass letztere bessere Entmagnetisierungseigenschaften aufweist. Eine Konfiguration mit kurzerer Stator- und langerer Rotor-Blechpaketlange wurde ebenfalls untersucht. Aufgrund mechanischer Probleme bei hoher Drehzahl, die durch einen groseren Abstand zwischen den beiden Lagern verursacht wurden, wurde diese Struktur bei der endgultigen Konstruktion nicht ubernommen. Eine weiteres Design wurde fur einen Permanentmagnet-unterstutzten Synchron-Reluktanzmotor basierend auf einem analogen Optimierungsprozess erarbeitet. Vor der endgultigen Fertigung wurden die endgultigen Auslegungen nochmals hinsichtlich mechanischer Festigkeit, Entmagnetisierung, Drehmoment und Temperatur uberpruft.Beide Maschinen wurden auf einem Prufstand untersucht. Es wurden Leerlauf, Kurzschluss und Lastprufungen sowie je ein Erwarmungslauf durchgefuhrt. Die Ergebnisse validieren das Optimierungsverfahren und die Simulationen. Auf Basis der Ergebnisse von Experimenten und Simulationen wurde dann eine Zusammenfassung gegeben.
546 $a English
590 $a School code: 1119
650 4 $a Design optimization. $3 3681984
650 4 $a Layouts. $3 3681514
650 4 $a Magnetism. $3 524508
650 4 $a Washers & dryers. $3 3682747
650 4 $a Genetic algorithms. $3 533907
650 4 $a Artificial intelligence. $3 516317
650 4 $a Computer science. $3 523869
690 $a 0800
690 $a 0984
710 2 $a Technische Universitaet Berlin (Germany). $e degree granting institution. $3 3819406
720 1 $a Schafer, Uwe $e degree supervisor.
720 1 $a Schuhmann, Rolf $e degree supervisor.
720 1 $a Wang, Shanming $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 83-09B.
790 $a 1119
791 $a Ph.D.
792 $a 2021
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29004502