Comparison of a flux barrier and a salient pole synchronous reluctance machine for high rotational speeds in electric traction applications

Hofer, Matthias; Schroedl, Manfred

doi:10.1109/icems.2017.8056108

“…Many parameter optimization studies of electric motors focused on the skew technique in the literature. Some of these studies made a skewed rotor design [14][15][16] and some made a skewed stator design [17,18]. The stator skew technique is used in the present study to minimize torque ripple.…”

Section: Optimization Using Sensitivity Analysismentioning

confidence: 99%

“…The effects of skew on salient pole rotor were investigated. It has been observed that the skew method reduces torque ripple [15]. P. Lazari et al investigated the skew effect on the rotor of a permanent magnet-assisted synchronous reluctance motor (PMaSynRM).…”

Section: Introductionmentioning

confidence: 99%

Design and Double-Stage Optimization of Synchronous Reluctance Motor for Electric Vehicles

Bekiroğlu

¹

,

Esmer

²

2023

Electric Power Components and Systems

1

0

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In this study, a high-power synchronous reluctance motor (SynRM) was designed for the traction motor of electric vehicle (EV) and its double-stage optimization was performed. Genetic algorithm and sensitivity analysis methods were used to obtain the best design parameters of the SynRM. Double-stage optimization was carried out to minimize the torque ripple and obtain the targeted torque, speed, and power values of the SynRM. In the first stage, the genetic algorithm method was used to improve the design parameters of the stator and rotor. With the improved stator and rotor design parameters obtained using this optimization technique, it was observed that the torque ripple decreased. In the second stage, the sensitivity analysis method was used. In this method, the effect of changing the skew angle of the stator on the torque ripple was investigated. The magnetic and performance analyses of the designed motor were examined in the optimization process. Analyses were made by ANSYS Maxwell using the finite element method (FEM). It has been observed that the targeted torque, power, speed, efficiency, and torque ripple minimization values are successfully achieved when the performance analysis of the motor is performed using the best stator and rotor parameters obtained through optimization. The results showed that SynRM produces high torque and high power with high efficiency and low torque ripple over a wide speed range. It has been revealed that it is quite proper to use the designed SynRM as a traction motor of new generation electric vehicles.

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“…Bei der vorliegenden Arbeit handelt es sich um den zweiten Fall, damit würde die naheliegendste Lösung sein, das Maschinendesign auf einen möglichst geringen Anteil an Oberschwin-gungen hin zu optimieren. Diese Optimierung wird allerdings durch Einbußen in der Performance erkauft [8].…”

Section: Regelkonzeptunclassified

“…Reluktanzmaschinen haben allerdings, je nach Rotortyp, auch gewisse Nachteile. Die Maschine mit Flussbarrieren benötigt beispielsweise einen minimalen Sättigungsstrom um eine Achsigkeit zu erzeugen, welche zum Aufbau eines Drehmoments notwendig ist [8]. Diese minimale Achsigkeit wird auch für einen lagegeberlosen Betrieb benötigt, was ausführlich in [13] behandelt wurde.…”

Section: Introductionunclassified

Untersuchung der Reduktion der harmonischen elektrischen Größen beim Betrieb einer Synchron-Reluktanzmaschine

Nikowitz

¹

,

Hofer

²

,

Schrödl

³

2019

Elektrotech. Inftech.

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In dieser Arbeit wird die Problematik der unerwünschten Harmonischen im Strangstrom sowie in der Strangspannung behandelt. Diese Harmonischen treten besonders im Fall der Synchron-Reluktanzmaschine mit Einzelpolen auf. Es wird das konventionelle mathematische Modell erweitert, um die Erzeugung der Harmonischen erklären und beschreiben zu können. Auf Grundlage des modifizierten mathematischen Modells wird eine Regler-Struktur vorgestellt, welche die unerwünschten Harmonischen im Strom bzw. in der Spannung erheblich reduziert. Dieses Regelkonzept benötigt lediglich die Frequenz der Harmonischen, wodurch ein universeller und robuster Einsatz möglich wird. Schlussendlich werden die vorgestellten Regelkonzepte anhand von Experimenten an einem Prototyp verifiziert. Schlüsselwörter: Synchronmaschine; Reluktanzmaschine; Harmonische; elektrische Antriebe; Echtzeit-Kompensation Analysing reduction possibilities of harmonic disturbances in synchronous reluctance machine drives. In this paper a current and voltage ripple reduction method is evaluated. These harmonic disturbances occur especially in synchronous reluctance machines with salient pole configuration. The fundamental wave model has to be enhanced to handle these unwanted harmonic effects. With this extended model a current and voltage ripple suppression method was developed, which only needs the frequency of the harmonic disturbance. Finally, the introduced control algorithms were verified on the prototype.

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Design and double-stage optimization of synchronous reluctance motor for electric vehicles

Bekiroğlu

¹

,

Esmer

²

2022

Preprint

1

0

View full text Add to dashboard Cite

In this study, a high-power synchronous reluctance motor (SynRM) was designed for the traction motor of electric vehicle (EV) and its double-stage optimization was performed. Genetic algorithm and sensitivity analysis methods were used to obtain the best design parameters of the SynRM. Double-stage optimization was carried out to minimize the torque ripple and obtain the targeted torque, speed, and power values of the SynRM. In the first stage, the genetic algorithm method was used to improve the design parameters of the stator and rotor. With the improved stator and rotor design parameters obtained using this optimization technique, it was observed that the torque ripple decreased. In the second stage, the sensitivity analysis method was used. In this method, the effect of changing the skew angle of the stator on the torque ripple was investigated. The magnetic and performance analyses of the designed motor were examined in the optimization process. Analyses were made by ANSYS Maxwell using the finite element method (FEM). It has been observed that the targeted torque, power, speed, efficiency, and torque ripple minimization values are successfully achieved when the performance analysis of the motor is performed using the best stator and rotor parameters obtained through optimization. The results showed that SynRM produces high torque and high power with high efficiency and low torque ripple over a wide speed range. It has been revealed that it is quite proper to use the designed SynRM as a traction motor of new generation electric vehicles.

show abstract

Comparison of a flux barrier and a salient pole synchronous reluctance machine for high rotational speeds in electric traction applications

Cited by 6 publications

References 13 publications

Design and Double-Stage Optimization of Synchronous Reluctance Motor for Electric Vehicles

Design and Double-Stage Optimization of Synchronous Reluctance Motor for Electric Vehicles

Untersuchung der Reduktion der harmonischen elektrischen Größen beim Betrieb einer Synchron-Reluktanzmaschine

Design and double-stage optimization of synchronous reluctance motor for electric vehicles

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