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Dissertations / Theses on the topic 'Permanent magnet assisted Synchronous Reluctance motor'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Niazi, Peyman. "Permanent magnet assisted synchronous reluctance motor, design and performance improvement." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3178.

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Recently, permanent magnet assisted (PMa)-synchronous reluctance motors (SynRM) have been considered as a possible alternative motor drive for high performance applications. In order to have an efficient motor drive, performing of three steps in design of the overall drive is not avoidable. These steps are design optimization of the motor, identification of the motor parameter and implementation of an advanced control system to ensure optimum operation. Therefore, this dissertation first deals with the design optimization of the Permanent Magnet Assisted Synchronous Reluctance Motor (PMa-SynRM

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2

Sriprang, Songklod. "High-Performance Nonlinear Control for Permanent Magnet Assisted Synchronous Reluctance Motor." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0269.

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L'électrification des transports est l'une des solutions pertinentes pour réduire les émissions de gaz à effet de serre. En effet, les nouvelles normes européennes imposent des limites de plus en plus restrictives sur les émissions de CO₂ par km. Ce contexte constitue un enjeu industriel essentiel pour les constructeurs automobiles. Ainsi, les industriels s'orientent vers des véhicules électriques (VE) dans lesquels un groupe motopropulseur électrique est présent. Cette unité est constituée d'une machine électrique alimentée par un convertisseur électronique de puissance statique connecté à un

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3

Kumar, Jha Amit. "Optimization of Line Start Permanent Magnet Synchronous Motor for Magnet Cost Reduction." Thesis, KTH, Elektrisk energiomvandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124550.

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In this thesis different methods of optimizing line start permanent magnet motor (LSPM) for magnet cost reduction is studied. Influence of different parameters has been studied by simulating magneto-static and transient FEM models of the machine. Finally a motor design of a LSPM with high rotor saliency has been proposed. The first method investigated is the use of flux barriers in LSPM and its effect on the magnetic flux leakage. The flux barriers reduce the flux leakage and hence help in reducing magnet volume. The second method studied is the use of two different grades of magnets. Using lo

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4

Konara, Mudiyanselage Iresha Shamini Dharmasena. "Model Predictive Control of Five-Phase Permanent Magnet Assisted Synchronous Reluctance Motor." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1535203021942922.

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5

Michalski, Tomasz Dobromir. "High efficiency sensorless fault tolerant control of permanent magnet assisted synchronous reluctance motor." Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/672890.

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In the last decades, the development trends of high efficiency and compact electric drives on the motor side focused on Permanent Magnet Synchronous Machines (PMSMs) equipped with magnets based on the rare-earth elements. The permanent magnet components, however, dramatically impact the overall bill of materials of motor construction. This aspect has become even more critical due to the price instability of the rare-earth elements. This is why the Permanent Magnet Assisted Synchronous Reluctance Motor (PMaSynRM) concept was brought to the spotlight as it gives comparable torque density and sim

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6

Arafat, AKM. "Fault Tolerant Control of a Five-Phase Permanent Magnet Assisted Synchronous Reluctance Motor." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1449838071.

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7

Ortega, Dulanto Adrian. "Design of a Synchronous Reluctance Motor Assisted with Permanent Magnets for Pump Applications." Thesis, KTH, Elektrisk energiomvandling, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-163280.

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This Master thesis focuses on the design of a high efficiency Permanent-Magnet-Assisted Synchronous Reluctance Motor (PMASynRM) intended for pump applications. The new motor is designed to replace an existing Induction Motor (IM) in a pump product. The basic principles of SynRM, and PMASynRM Motors and a good analytical model were introduced. Due to the complexity and high non-linearity of this specific electrical machine, Finite Element Method (FEM) and an analytical model were combined. First, a parameter sensitivity analysis was carried out with the software SPEED. However, SPEED does not g

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8

Islam, Md Zakirul. "Design and Performance Analysis of Rare-Earth-Free Five-Phase Permanent Magnet-Assisted Synchronous Reluctance Motor." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1574423146588421.

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9

Herbert, Joseph. "Thermal Analysis of a Permanent Magnet Assisted Synchronous Reluctance Motor Using Lumped Parameter Thermal Modeling." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1491313645053898.

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10

Arafat, AKM. "ANALYSIS AND CONTROL OF FIVE-PHASE PERMANENT MAGNET ASSISTED SYNCHRONOUS RELUCTANCE MOTOR DRIVE UNDER FAULTS." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1524168102423576.

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11

De, Kock Hugo Werner. "Dynamic control of the permanent magnet assisted reluctance synchronous machine with constant current angle." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/2062.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2006.<br>This thesis is about the dynamic control of a permanent magnet assisted reluctance synchronous machine (PMA RSM). The PMA RSM in this thesis is a 110 kW traction machine and is ideal for the use in electrical rail vehicles. An application of the dynamic control of the PMA RSM in electrical rail vehicles is to reduce wheel slip. The mathematical model of the PMA RSM is derived and explained in physical terms. Two methods of current control for the PMA RSM are investigated, namely constant field cu

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12

Singh, Aditya Pratap. "Concept Population & Verification of Traction Motors." Thesis, KTH, Fordonsdynamik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302129.

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The electrification of automobiles has emerged as the sustainable powertrain solutionto meet United Nations sustainable development goals of sustainable cities andcommunities, affordable and clean energy, and climate action. The success of theelectrification depends on the efficiency of traction motors. Hence, the automobileindustry is dedicated to improving the performance of electrical traction machinesfor high performance and sustainability. The thesis aims to build various electricalmachine’s concept designs and quantify their behaviour on sustainability andperformance. The thesis objectiv

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13

Mahmoud, Hanafy. "Synchronous reluctance machines: eccentricity analysis and design criteria." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3424571.

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Nowadays, the interest in the synchronous reluctance machines is growing up due to their several merits in comparison to other machine types. These machines offer high torque density with respect to the induction machines. Their torque density is slightly lower than permanent magnet synchronous machines even though the lower performance is compensated by a much cheaper rotor. Since synchronous reluctance machines do not induce voltage when the stator is not supplied, there are not short circuit currents and braking torques due to the electrical faults, e.g. they have high fault tolerant capab

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14

Bacco, Giacomo. "Advanced Design and Optimization of Anisotropic Synchronous Machines." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3423172.

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This work covers many research aspects of anisotropic synchronous motors, which are synchronous reluctance (SyR), permanent magnet assisted synchronous reluctance (PMaSyR) and interior permanent magnet (IPM) machines. In fact, all these kinds of machines exhibit quite a strong reluctance torque component, hence the name anisotropic. From the early 2000s, the design of electric machines started to deeply rely on finite element analysis (FEA) coupled to automatic optimization algorithms. This workflow enabled the machine designer to make fewer initial sizing hypotheses and to explore a wider de

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15

Degano, Michele. "Analysis, Design and Optimization of Innovative Electrical Machines Using Analytical and Finite Element Analysis Methods." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424147.

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The interest on rotating electrical machines adopting permanent magnets (PMs) has increased during the past few decades, representing now a fashionable design option in a number of fields as industrial processing, transportation, actuators, household appliances and power plants. The issues related to an increasing electrical energy demand and consumption, have generated a tendency to research electrical drives with high efficiency, pushing electrical machines technology to further improvements. The introduction of permanent magnets based on rare earth, experienced since the 1960's, gave a gre

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16

Babetto, Cristian. "Design Advances in Synchronous Reluctance and Permanent Magnet Assisted Synchronous Reluctance Machines." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3424744.

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In recent years, synchronous reluctance (SyR) machine has been receiving an increasing interest, mainly due to the lack of permanent magnets (PMs) in the rotor, the good torque density, structural robustness and the low cost. The main drawbacks of such a machine are the torque ripple and the low power factor. Nevertheless, they can be efficiently improved with a proper optimization of the rotor flux-barriers geometry. This aspect has been deeply studied in the past and still today, it is the subject of study of many authors. The first part of this thesis continues such a mission investigati

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17

Mingardi, Damiano. "Analysis, design and test of high efficiency electrical machines with a rotor winding." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3422394.

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This thesis deals with the analysis, design and test of three-phase high efficiency electrical motors, with particular reference to motors with a rotor winding. At first, the background and the motivations of this work are described. The bibliography on the subjects is deeply examined and a selection of the most relevant papers can be found in the reference. In this scenario, the main objective of this thesis are illustrated. The Line-Start (LS) Synchronous Machine (SyM) design is a subject under investigation since the beginning of the last century, when solid state power converters was not

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18

Poudel, Bikrant. "Line Start Permanent Magnet Synchronous Motor for Multi Speed Application." ScholarWorks@UNO, 2017. https://scholarworks.uno.edu/td/2430.

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This thesis aims to design and develop LSPM motors capable of operating in two distant synchronous speeds with good starting torque and steady state characteristics for variety of industrial applications, in particular offshore and maritime applications. The proposed designs are based on variable pole numbers for the stator and the rotor. The stator winding consist of two independent windings with different pole numbers to switch the winding and change the operating pole count for low and high speed applications. For the motor to operate in these two distinct operating speeds, the rotor must b

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19

FERRARI, SIMONE. "Design, Analysis and Testing Procedures for Synchronous Reluctance and Permanent Magnet Machines." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2836788.

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20

Bonthu, Sai Sudheer Reddy. "Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1439393220.

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21

Khan, Kashif Saeed. "Design of a Permanent-Magnet Assisted Synchronous Reluctance Machine for a Plug-In Hybrid Electric Vehicle." Licentiate thesis, KTH, Elektrisk energiomvandling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-50595.

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22

Sadri, Seyed Mohammad Reza. "Variable reluctance motor and drive systems /." View thesis, 1995. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030716.150935/index.html.

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23

Sadri, Seyed Mohammad Reza. "Variable reluctance motor and drive systems." Thesis, View thesis, 1995. http://handle.uws.edu.au:8081/1959.7/427.

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This thesis investigates the development of a machine which is termed as singly salient reluctance (SSR) motor and its drive system. The stator of SSR motor is identical to that of a conventional induction motor or any other ac machine. Its rotor has salient poles with internal flux barriers or flux guides. This research covers the detailed designs of the SSR motors and their magnetic circuit analysis using finite element method (FEM). The parameters which are important for designing the SSR motor are investigated. This investigation resulted in designs which have low manufacturing cost as wel

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24

Pina, Ortega Alejandro Jose. "Modeling and Analysis of Asymmetries in Permanent Magnet Synchronous Machines." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1469034099.

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25

Guan, Yang. "Torque-speed characteristics of induction machine and hybrid permanent magnet assisted synchronous reluctance machine for electric vehicle application." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/7867/.

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This thesis describes an investigation into two types of electrical machines for EV/HEV applications, i.e. induction machine (IM) and permanent magnet assisted synchronous reluctance machine (PMA-SynRM). Both are low-cost due to no or less usage of NdFeB permanent magnet (PM), compared with interior PM (IPM) machines. IM is investigated with particular reference to its maximum torque/power-speed characteristic. Firstly, an analytical method based on dq-axis reference frame to obtain the maximum torque/power-speed characteristic is developed and validated by experiments. Then, the influences of

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26

Tarek, Md Tawhid Bin. "Optimal High-Speed Design and Rotor Shape Modification of Multiphase Permanent Magnet Assisted Synchronous Reluctance Machines for Stress Reduction." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1510617496931844.

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27

Kubín, Tomáš. "Reluktanční stroj s permanentními magnety na rotoru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220929.

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This master’s thesis is focuses on the reluctance motor, especially on the design of the rotor. It shows the development of the construction of rotors of reluctance motors. Furthermore, it shows the principle of reluctance machine and its basic mathematical description and the principle of improving the machine parameters by inserting permanent magnets into the rotor. It offers an overview of patents available from 2000 to present. Also it deals with the design of the rotor with permanent magnets for stator of induction motor.

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28

PESCETTO, PAOLO. "Sensorless Commissioning and Control of High Anisotropy Synchronous Motor Drives." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2730183.

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29

Carraro, Enrico. "Analysis and design procedures of permanent magnet machines for hybrid electric vehicles and rail-traction applications." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3421927.

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The interest for Permanent Magnet (PM) synchronous machines has increased in the recent years. This is mainly due to important developments in the field of the electrical machine design, control systems and PM technology. These factors enable the possibility of designing electrical machines with a high torque density, power density, efficiency, low cost with wide degrees of freedom. Such requirements are highly sought in the automotive field, especially following the increasingly stringent energy efficiency and air pollution emissions policies. These conditions are pushing forward the transiti

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30

Zhao, Shuang. "Analysis and Control Aspects of a PMSynRel Drive in a Hybrid Electric Vehicle Application." Doctoral thesis, KTH, Elektrisk energiomvandling, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-139592.

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This thesis deals withmodeling and control of an electric drive equipped with a permanentmagnet assisted synchronous reluctance (PMSynRel) machine for a plug-in hybrid electric vehicle application. In the first part of the thesis, a special use of the PMSynRel machine in consideration, known as an integrated charger concept, is investigated. The integrated charger feature allows using the PMSynRel machine as a part of the vehicle’s on-board charging system when charging the battery from the grid. A finite-element based analysis is performed providing important insights into the machine operati

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31

López, Torres Carlos. "Analysis and implementation of a methodology for optimal PMa-SynRM design taking into account performances and reliability." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/620779.

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Automotive applications focus to develop drive-train technologies with higher energy efficiency and lower environmental impact. Electric and hybrid vehicles are gaining popularity since they fulfill these requirements . The aim of optimal motor design is to achieve high torque and power densities, wider speed range and high efficiency within the area defining the most frequent operating points. This work presents a methodology to optimize electric motors for traction applications considering a multi-physics approach. The magnetic behavior is evaluated using a complex reluctance networks capabl

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Apostolopoulos, Nikolaos. "Design and implementation of an SPB converter for fault tolerant PMSynRel motor control." Thesis, KTH, Elektrisk energiomvandling, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-179141.

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The stacked polyphase bridges (SPB) converter topology is investigated in the presentthesis as a fault-tolerant choice for permanent-magnet synchronous reluctance (PMSyn-Rel) motor control. Integrated motor drive systems are studied as they offer great benefitsfor propulsion applications. Moreover, the importance of a modular topology, like theSPB, for an electric powertrain is discussed. The latter consists of a number of seriesconnected, 3-phase 2-level inverter submodules that supply separate sets of windings ina multi-star motor. The specifications of building a four-board SPB setup are ex

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33

Nategh, Shafigh. "Thermal Analysis and Management of High-Performance Electrical Machines." Doctoral thesis, KTH, Elektrisk energiomvandling, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122695.

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This thesis deals with thermal management aspects of electric machinery used in high-performance applications with particular focus put on electric machines designed for hybrid electric vehicle applications. In the first part of this thesis, new thermal models of liquid (water and oil) cooled electric machines are proposed. The proposed thermal models are based on a combination of lumped parameter (LP) and numerical methods. As a first case study, a permanent-magnet assisted synchronous reluctance machine (PMaSRM) equipped with a housing water jacket is considered. Particular foc

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34

Zhao, Shuang. "Modeling and Control of a PMSynRel Drive for a Plug-InHybrid Electric Vehicle." Licentiate thesis, KTH, Elektriska maskiner och effektelektronik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-40832.

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This thesis presents two transient models for a prototype integrated charger for use in a plug-in hybrid-electrical vehicle application. The models can be useful in order to develop control algorithms for the system or to recommend improvements to the machine design. A flux map based method, obtaining input data from simulations using the finite element method (FEM) is used to model the grid synchronization process. The grid side voltage can then be predicted by incorporating spatial flux linkage harmonics. The model is implemented in Matlab/Simulink and compared to stand alone FEM simulations

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35

Poskovic, Emir. "Innovative magnetic materials for the new applications in electrical machines." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3424784.

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Permanent magnets play a key role as a component in a wide range of devices utilised by many industries; they are widely used in several electromechanical applications to convert energy, including actuators, motors and sensors, home appliances, office automation equipment, speakers, aerospace, wind generators and more. Traditionally the adopted PMs were obtained from Rare Earth components, such as NdFeB, with high magnetic performance, but expensive. The research of alternative permanent magnets, in many cases has brought to choose the ferrites, mainly due to their low cost, but sometimes wit

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36

Ting-Wei, Syu, and 許庭維. "Implementation of a Permanent Magnet-assisted Synchronous Reluctance Motor Drive." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/96267277112456304762.

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碩士<br>明志科技大學<br>電機工程系碩士班<br>103<br>This thesis studies the permanent magnet-assisted synchronous reluctance motor drive. Three layers of high-strength permanent magnets are installed on therotor, and by the permanent magnet as well as reluctance torques to provide rotating magnetic field. Because there exist stator windings only in the stator, cooling would be easier, torque ripple becomes less, and motor’s efficiency is higher. This thesis proposes a vector control method that can improve permanent-magnet synchronous motor’s torque ripples. Indirectly increase the electromagnetic torque and a

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Chakali, Anil K. "Sensorless Speed Control of Permanent Magnet-Assisted Synchronous Reluctance Motor (PMa-SynRM)." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7405.

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An interesting alternative for today's high efficiency variable speed drives is the Permanent Magnet-Assisted Synchronous Reluctance Motor drive, which belongs to the family of brushless synchronous AC motor drives. Generally, the reluctance torque of this motor is significant compared to the Permanent Magnet electrical torque. The advantage of increased reluctance torque is the decreased need of expensive permanent magnet (PM) material, which makes this solution thus cheaper than the respective permanent magnet motor. Also due to its synchronous operation, sensorless rotational control is pos

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38

Liu, Yu-Han, and 劉育涵. "Design of Dual Three-phase Permanent-magnet Assisted Synchronous Reluctance Motor Drives." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/c6rgtk.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>106<br>This thesis presents the design of dual three-phase permanent-magnet assisted synchronus reluctance motor (PMASRM) drives. Two three-phase inverters are both controlled by one digital signal processor, TMS320F28069. Linear hall-effect and current sensors are used to feed back rotor position, speed and motor currents. The maximum torque per ampere as well as speed and current closed-loop controls are proposed to set the quadrature- and direct-axis currents to promote system performance. In addition, the post-fault control is conducted by determining and disconn

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Luo, Ta-Yin, and 羅大殷. "Designs and Analyses of Permanent Magnet Assisted Synchronous Reluctance Motors." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/48976828248270285045.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>104<br>The purpose of this research is to provide a systematic design of a low-cost and high performance Permanent-Magnet-Assisted Synchronous Reluctance Motor (PMA-SynRM) base on the stator of an existing commercial induction motor. The motor design process started from the rotor design optimization of the synchronous reluctance motor, then the proper placement and usage of magnets, and finally the structural design of the PMA-SynRM. The effects among different flux path designs in the rotor core, the magnets, and the unavoidable structural changes for the massive

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Chen, You-Sheng, and 陳佑昇. "Design of Multi-phase Permanent-magnet Assisted Synchronous Reluctance Motors." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/97ce44.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>106<br>This thesis aims to analyze and design a multiphase permanent-magnet assisted synchronous reluctance motor. The motor has 48 slots and 8 poles. Dual three-phase winding with two sets of three-phase three-arm inverter as well as six-phase winding with six-phase inverter are designed to enhance system reliability. The innovative design of rotor magnet shape is proposed to increase the inductance ratio between quadrature as well as direct axis to yield both magnetic and reluctance torques. The magnets in rotor are hollowed to form magnetic barriers. Non-rare eart

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41

Mohanarajah, Thushanthan. "Analysis, design optimisation and experimental performance of synchronous reluctance and permanent magnet assisted synchronous reluctance machines." Thesis, 2019. http://hdl.handle.net/1959.7/uws:56902.

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The research studies, in detail, the synchronous reluctance machine (SynRM) and permanent magnet assisted synchronous reluctance machine (PMSynRM) to improve the machine performances. In this study, the SynRM analytical models are revisited, and functional characteristics are mathematically developed to improve the machine performance. The performance parameters such as torque density, power factor, and efficiency are investigated along with torque ripples. SynRM is known for its high torque density in a compact size. Its improvement is analytically studied further by optimising rotor properti

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Chan, Chih-Hsiang, and 詹智翔. "50kW Magnet Reduction of Magnet-assisted Synchronous Reluctance Motor." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/kvv3m4.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>106<br>In this paper, the magnet-assisted synchronous reluctance motor magnet reduction is used as the research topics. A finite element software is used to design a 48-slot 8-pole Integral-slot distribution winding motor to maintain the same target specifications, including maximum torque, maximum power, rated point efficiency and torque density, as a research limitation of magnet reduction. The method of reducing magnet is to change the flux barrier shape and core width of the magnet-assisted synchronous reluctance motor, increase the q-axis inductance and reduce

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Cheng, An-Hsiung, and 鄭安雄. "Development of 25kW Permanent Magnet Assisted Synchronous Reluctance Machine." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/98567824257723172529.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>100<br>The objective of this work is to design a rare earth free permanent magnet machine for 25kW ferrite magnet machine. An important challenge of rare earth free machine is to overcome the defects of ferrite magnets, such as low coercive force and low residual flux density. As a result, the multi-layer rotor configuration with ferrite magnet was adopted to permanent magnet synchronous machine. Moreover, considering the output torque is predominantly the reluctance torque, the multi-layer rotor configuration with ferrite magnet PMSM is also called permanent magnet

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44

Caldori, Pasquale. "Improvement of diesel engines efficiency driving the fuel pump with an electrical machine." Doctoral thesis, 2018. http://hdl.handle.net/11589/120405.

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Abstract:

Fino ad un recente passato, le pompe volumetriche di un sistema di iniezione diesel erano comandate direttamente dal motore a combustione. Al fine di ridurre le emissioni di un veicolo diesel, nuove soluzioni in grado di utilizzare al meglio il carburante devono essere pensate. Grazie al continuo sviluppo degli azionamenti elettrici, è stato possibile svincolare il numero di giri della pompa di bassa pressione dal numero di giri del motore a combustione; ottenendo in tal modo un risparmio nell’uso di carburante ed una riduzione della manutenzione necessaria. In questo lavoro, la procedura di p

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