Cogging Torque Minimization in Transverse Flux Machines

Eduard Muljadi; Tausif Husain; Iftekhar Hasan; Yilmaz Sozer; Iqbal Husain

doi:10.1109/ECCE.2016.7854923

Cogging Torque Minimization in Transverse Flux Machines

Eduard Muljadi, Tausif Husain, Iftekhar Hasan, Yilmaz Sozer, Iqbal Husain

Research output: Contribution to conference › Paper

13 Scopus Citations

Abstract

This paper presents the design considerations in cogging torque minimization in two types of transverse flux machines. The machines have a double stator-single rotor configuration with flux concentrating ferrite magnets. One of the machines has pole windings across each leg of an E-Core stator. Another machine has quasi-U-shaped stator cores and a ring winding. The flux in the stator back iron is transverse in both machines. Different methods of cogging torque minimization are investigated. Key methods of cogging torque minimization are identified and used as design variables for optimization using a design of experiments (DOE) based on the Taguchi method. A three-level DOE is performed to reach an optimum solution with minimum simulations. Finite element analysis is used to study the different effects. Two prototypes are being fabricated for experimental verification.

Original language	American English
Number of pages	8
DOIs	https://doi.org/10.1109/ECCE.2016.7854923
State	Published - 2017
Event	2016 IEEE Energy Conversion Congress and Exposition (ECCE) - Milwaukee, Wisconsin Duration: 18 Sep 2016 → 22 Sep 2016

Conference

Conference	2016 IEEE Energy Conversion Congress and Exposition (ECCE)
City	Milwaukee, Wisconsin
Period	18/09/16 → 22/09/16

NREL Publication Number

NREL/CP-5D00-66390

Keywords

cogging torque reduction
design of experiment
optimization
permanent magnet machine
transverse flux machine

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10.1109/ECCE.2016.7854923

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title = "Cogging Torque Minimization in Transverse Flux Machines",

abstract = "This paper presents the design considerations in cogging torque minimization in two types of transverse flux machines. The machines have a double stator-single rotor configuration with flux concentrating ferrite magnets. One of the machines has pole windings across each leg of an E-Core stator. Another machine has quasi-U-shaped stator cores and a ring winding. The flux in the stator back iron is transverse in both machines. Different methods of cogging torque minimization are investigated. Key methods of cogging torque minimization are identified and used as design variables for optimization using a design of experiments (DOE) based on the Taguchi method. A three-level DOE is performed to reach an optimum solution with minimum simulations. Finite element analysis is used to study the different effects. Two prototypes are being fabricated for experimental verification.",

keywords = "cogging torque reduction, design of experiment, optimization, permanent magnet machine, transverse flux machine",

author = "Eduard Muljadi and Tausif Husain and Iftekhar Hasan and Yilmaz Sozer and Iqbal Husain",

year = "2017",

doi = "10.1109/ECCE.2016.7854923",

language = "American English",

note = "2016 IEEE Energy Conversion Congress and Exposition (ECCE) ; Conference date: 18-09-2016 Through 22-09-2016",

}

TY - CONF

T1 - Cogging Torque Minimization in Transverse Flux Machines

AU - Muljadi, Eduard

AU - Husain, Tausif

AU - Hasan, Iftekhar

AU - Sozer, Yilmaz

AU - Husain, Iqbal

PY - 2017

Y1 - 2017

N2 - This paper presents the design considerations in cogging torque minimization in two types of transverse flux machines. The machines have a double stator-single rotor configuration with flux concentrating ferrite magnets. One of the machines has pole windings across each leg of an E-Core stator. Another machine has quasi-U-shaped stator cores and a ring winding. The flux in the stator back iron is transverse in both machines. Different methods of cogging torque minimization are investigated. Key methods of cogging torque minimization are identified and used as design variables for optimization using a design of experiments (DOE) based on the Taguchi method. A three-level DOE is performed to reach an optimum solution with minimum simulations. Finite element analysis is used to study the different effects. Two prototypes are being fabricated for experimental verification.

AB - This paper presents the design considerations in cogging torque minimization in two types of transverse flux machines. The machines have a double stator-single rotor configuration with flux concentrating ferrite magnets. One of the machines has pole windings across each leg of an E-Core stator. Another machine has quasi-U-shaped stator cores and a ring winding. The flux in the stator back iron is transverse in both machines. Different methods of cogging torque minimization are investigated. Key methods of cogging torque minimization are identified and used as design variables for optimization using a design of experiments (DOE) based on the Taguchi method. A three-level DOE is performed to reach an optimum solution with minimum simulations. Finite element analysis is used to study the different effects. Two prototypes are being fabricated for experimental verification.

KW - cogging torque reduction

KW - design of experiment

KW - optimization

KW - permanent magnet machine

KW - transverse flux machine

U2 - 10.1109/ECCE.2016.7854923

DO - 10.1109/ECCE.2016.7854923

M3 - Paper

T2 - 2016 IEEE Energy Conversion Congress and Exposition (ECCE)

Y2 - 18 September 2016 through 22 September 2016

ER -

Cogging Torque Minimization in Transverse Flux Machines

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Keywords

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