Low‐torque ripple design of a ferrite‐assisted synchronous reluctance motor

Barcaro, Massimo; Pradella, Tomas; Furlan, Ivano

doi:10.1049/iet-epa.2015.0248

Cited by 28 publications

(19 citation statements)

References 23 publications

(59 reference statements)

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“…Then, the positioning of the barriers is realized to obtain a good distribution of the magnetic flux, that is, a reduction of the torque ripple. The ripple reduction is obtained by means of an optimization process, where the angle of the barriers is changed to find the best solution [29][30][31]. However, during the pre-design stage, the angle between the end points of the barriers is fixed according to [28,32]:…”

Section: New Trends In Electrical Vehicle Powertrainsmentioning

confidence: 99%

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Reliable Design of PMaSynRM

López-Torres¹,

Garcia-Espinosa²,

Riba³

2019

New Trends in Electrical Vehicle Powertrains

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Electric vehicles require highly reliable and resilient electric motors, due to the harsh operating conditions they must withstand. To this end, there is a current trend to design rareearth-free machines. Traction electric motors must be optimized in terms of efficiency, torque density, power factor, constant power speed ratio, and cost. Although different technologies are available, permanent magnet assisted synchronous reluctance motors (PMa-SynRM) are promising candidates for such applications. Nowadays, the optimal design process of electrical motors is based on finite element method (FEM) simulations. However, it is very time consuming with a heavy computational burden process, so in order to speed up the optimization process, it is very appealing to have an accurate pre-design of the machine. In this chapter, the electromagnetic pre-design of a PMaSynRM is developed. In the proposed electromagnetic pre-design process, the geometry of the machine is calculated based on analytical equations that take into account the thermal, electrical, magnetic, and mechanical behavior of the machine to ensure a suitable and reliable design.

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Section: New Trends In Electrical Vehicle Powertrainsmentioning

confidence: 99%

“…However, the following example is realized with two barriers for the sake of simplification. Figure 8 shows a rotor with two flux barriers, the magnetomotive force in each segment, which has been calculated with (31), and the variable to optimize, which is the size of the first barrier.…”

Section: New Trends In Electrical Vehicle Powertrains 114mentioning

confidence: 99%

Reliable Design of PMaSynRM

López-Torres¹,

Garcia-Espinosa²,

Riba³

2019

New Trends in Electrical Vehicle Powertrains

View full text Add to dashboard Cite

show abstract

“…On the other hand, it is also renowned for poor power factor (pf) and torque ripples [8,9]. The PMSynRM has a combination of reluctance (dominant) and magnetic torque components with improved pf and torque ripples in a compact size compared with its counterparts [1,[10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

A Novel Method to Optimize Permanent Magnet Assisted Synchronous Reluctance Machines

Mohanarajah

Nagrial

Rizk

et al. 2020

Electric Power Components and Systems

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CONTENTS 1. Introduction 2. Analysis of SynRM 3. Conclusion References Abstract-This paper presents the characteristics of permanent magnets in a synchronous reluctance machine by employing analytical and finite element methods. Four possible designs are studied and their characteristics are compared against a base synchronous reluctance machine with linear barriers to reveal machine characteristics. Then, the paper proposes a novel optimization topology to optimize permanent magnet synchronous reluctance machine as a single object for better machine performance. An explicit investigation is conducted to reveal the operational behavior of the machine such as torque, power factor and torque ripples with various machine parameters and compares them with the base design. The study reveals that permanent magnet synchronous reluctance machine can be optimized to have significantly high-power factor and torque with acceptable torque ripples.

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“…Magnetic bearings including passive MBs [10], active MBs [11] and Hybrid MBs [12][13][14] are studied. Both structure design and control of electrical machines are researched by many scholars [15][16][17][18][19][20][21]. FEM is known as a valuable tool for solving various electromagnetic problems in electrical machines systems [22,23].…”

Section: Introductionmentioning

confidence: 99%

System Electromagnetic Loss Analysis and Temperature Field Estimate of a Magnetically Suspended Motor

Ren¹,

Le²,

Han³

2017

PIER M

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Abstract-A magnetically suspended permanent-magnet motor (MSPMM) system mainly consists of magnetic bearings (MBs), a motor and a rotor assembly. This paper focuses on the system analysis of an MSPMM used for a vacuum turbo-molecular pump (TMP). To ensure a normal levitation and rotation, characteristics of electromagnetic field of MBs and motor are studied. For MSPMM, loss is the main heat source. To ensure the safe and steady operation of MSPMM, loss of the MB and motor are calculated and analyzed by finite element method (FEM). For thermal aspects, temperature field is estimated. Based on these analyses, the system performance can be predictive. Considering the poor heat dissipation conditions in a vacuum environment, this system analysis including loss and temperature field is of great value for MSPMM design.

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Low‐torque ripple design of a ferrite‐assisted synchronous reluctance motor

Cited by 28 publications

References 23 publications

Reliable Design of PMaSynRM

Reliable Design of PMaSynRM

A Novel Method to Optimize Permanent Magnet Assisted Synchronous Reluctance Machines

System Electromagnetic Loss Analysis and Temperature Field Estimate of a Magnetically Suspended Motor

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