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Dissertations / Theses on the topic 'Interior permanent magnet synchronous machine'

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Published: 5 June 2025

Last updated: 1 August 2025

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1

Lovelace, Edward Carl Francis. "Optimization of a magnetically saturable interior permanent-magnet synchronous machine drive." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9085.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.<br>Includes bibliographical references (p. 258-263).<br>Interior permanent magnet (IPM) synchronous machines are attractive because they can achieve constant-power operation over a wide speed range with limited magnet strength requirements and reduced power electronics cost. These characteristics provide the IPM machine with advantages over alternative machine types in applications such as spindle and traction drives. An important challenge for high-performance IPM machine design

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2

Prins, Michiel Hendrik Albertus. "Design of a field-intensified interior permanent magnet synchronous machine for electric vehicle application." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86242.

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Thesis (MScEng)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The focus of this thesis is on the optimal design and evaluation of FI-PM machines to be used with a MG transmission drive-train for EV application. The machines presented are optimised using a gradient-based optimisation algorithm of the VisualDoc software together with FE software and Python scripts. Each machine is optimised for its own objective function. The focus is to reduce expensive rare earth material. High torque ripple issues of the optimised machines are solved by implementing a relatively new topology wher

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3

Barcaro, Massimo. "Design and Analysis of Interior Permanent Magnet Synchronous Machines for Electric Vehicles." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427484.

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The adoption of permanent magnet (PM) on rotating electrical machines represents now a fashionable design option in all elds as transportation, industrial processing, power plants, domestic appliances, actuators and so on. The corresponding power ratings of such machines ranges now from fractions of Watts to some million of Watts, as in a wind generator. Actually, among the electrical machines, the PM synchronous machine is the more deeply studied from academia and industry. In particular, the PM synchronous machine combines several advantages as high effciency, high power factor, high torq

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4

Sun, Tianfu. "Efficiency optimised control of Interior Permanent Magnet Synchronous Machine (IPMSM) drives for electric vehicle tractions." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/13610/.

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5

Kalyan, Mohamedreza. "Comparison of interior permanent magnet synchronous machines for a high-speed application." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29442.

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Permanent Magnet machines have been increasingly used in high-speed applications due to the advantages they offer such as higher efficiency, output torque and, output power. This dissertation discusses the electrical and magnetic design of permanent magnet machines and the design and analysis of two 10 kW, 30000 rpm Interior Permanent Magnet (IPM) machines. This dissertation consists of two parts: the first part discusses high-speed machine topologies, and in particular the permanent magnet machine. Trends, advantages, disadvantages, recent developments, etc. are discussed and conclusions are

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6

NEVOLOSO, Claudio. "Enhanced mathematical modelling of interior permanent magnet synchronous machines for loss minimization control." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/395194.

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Energy management is a fundamental facility for humanity. At present, the awareness that renewable energy cannot satisfy the entire energy needs of the community and that traditional energy sources have a limited duration makes it imperative to address the problem of their careful and responsible use. Therefore, the need for an intelligent and functional use of energy has led the technical-scientific community to concentrate its efforts on the issues of sustainable development and energy savings. The electric drives industrial sector has suffered this influence in a visceral way. This sector p

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7

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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8

Azar, Ziad. "Electromagnetic performance of fractional slot interior permanent magnet and synchronous reluctance brushless AC machines having non-overlapping concentrated windings." Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/2839/.

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This thesis investigates the electromagnetic performance of the fractional-slot interior permanent magnet (IPM) and salient-pole synchronous reluctance (SynR) brushless AC machines having non-overlapping concentrated windings, the SynR machines being excited by bipolar AC sinusoidal currents with and without DC bias. The analyses are validated by finite element calculations and measurements. The PM machines with modular stators are often employed to improve the electromagnetic performance and ease the manufacture process, particularly stator winding. The influence of uniform and non-uniform ad

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9

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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10

Uddin, Mohammad Nasir. "Intelligent control of an interior permanent magnet synchronous motor drive." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0021/NQ55128.pdf.

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11

Feilberg, Espen. "Investigation of the Doubly Fed Permanent Magnet Synchronous Machine." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9962.

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<p>This master thesis treats the research of a novel generator with converter design called Doubly Fed Permanent Magnet Synchronous Machine, DF-PMSM, patented by SmartMotor. The thesis includes an introduction to the machine, a state-of-the-art survey, a hydro power case, simulations and a laboratory experiment. The DF-PMSM concept adds an important feature to fixed speed PMSM systems; the reactive power can be regulated. Compared to a direct coupled PMSM the DF-PMSM concept can add voltage control (by controlling the reactive power) in addition to active power control. The concept is bas

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12

Li, Yaohua [Verfasser]. "Direct Torque Control of Permanent Magnet Synchronous Machine / Yaohua Li." Aachen : Shaker, 2010. http://d-nb.info/1081886862/34.

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13

Chretien, Ludovic. "POSITION SENSORLESS CONTROL OF NON-SALIENT PERMANENT MAGNET SYNCHRONOUS MACHINE." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1145286531.

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14

Lennartsson, Alexander, and Martina Blomberg. "Fault Detection in Permanent Magnet Synchronous Motors using Machine Learning." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84909.

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In the aviation industry, safety and robustness are the number one priorities, which is why they use well-tested systems such as hydraulic actuators. However, drawbacks such as high weight and maintenance have pushed the industry toward newer, electrical, actuators that are more efficient and lighter. Electrical actuators, on the other hand, have some reliability issues. In particular, short circuits in the stator windings of Permanent-Magnet SynchronousMotors (PMSMs), referred to as Inter-Turn Short Faults (ITSFs), are the dominating faults, and is the focus of this thesis. ITSFs are usually

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15

Al-Taee, Majid Abdulwahid. "A synchronous ultrasonically modulated drive system incorporating a permanent magnet machine." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314513.

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16

Almarhoon, Ali. "Sensorless control of dual three-phase permanent magnet synchronous machine drives." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/15888/.

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17

Gaeta, Alberto. "Fault Tolerant Sensorless Permanent Magnet Synchronous Motor Drives." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/996.

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High cost and complexity of fault tolerant motor drives has relegated them to mission critical, no-compromise applications. Heeding to this target application, past research efforts have been mainly focused on developing highly redundant, multiphase fault-tolerant solutions able to assure a very high fault tolerance level. However, many other applications would benefit from the availability of solutions ensuring an acceptable level of fault tolerance. The present work shows that, if tolerance is limited to few common faults and a reasonable performance penalty after a fault is accepted, a thr

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18

Yang, Yan. "Initial rotor position estimation for low saliency interior permanent-magnet synchronous motor drives." Thesis, Montana State University, 2011. http://etd.lib.montana.edu/etd/2011/yang/YangY0511.pdf.

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This work presents an initial rotor position estimation method for low saliency interior permanent-magnet synchronous motor (IPMSM) drives. The method injects signals into the stationary alpha-beta frame of the motor and substitutes the injected signals into the stationary alpha-beta frame model of the motor to solve for the rotor position. In particular, the method injects specific signals into the motor to eliminate the rotor-position-independent terms while keeping the rotor-position and motor-saliency dependent terms in the motor model. As a result, the rotor-position and motor-saliency de

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19

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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20

Ren, Yuan. "Direct torque control of dual three-phase permanent magnet synchronous machine drives." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/12190/.

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21

Malloy, Adam. "Thermal management of the permanent magnets in a totally enclosed axial flux permanent magnet synchronous machine." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/25094.

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Elevated magnet temperature in Axial Flux Permanent Magnet Synchronous Machines (AF PMSM) adversely affects torque production, material cost, and the risk of demagnetisation. These machines show promise in applications requiring high power density, however the factors which affect magnet temperature have rarely been investigated. This is therefore the focus of the thesis. A multiphysics numerical model was formulated which predicted the loss, flow, and temperature fields within an AF PMSM. A criterion for estimating the relative importance of the fluctuating component of a periodic heat source

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22

Underwood, Samuel J. "ON-LINE PARAMETER ESTIMATION AND ADAPTIVE CONTROL OF PERMANENT MAGNET SYNCHRONOUS MACHINES." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1143656836.

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23

Doolittle, Randy Gene. "Noise reduction control strategy of a permanent magnet synchronous machine for vehicle applications." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2718.

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24

Wang, Yuanlin [Verfasser]. "Contributions to optimize the control of Permanent Magnet Synchronous Machine Drives / Yuanlin Wang." Aachen : Shaker, 2017. http://d-nb.info/1138177164/34.

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25

Grobler, Andries Johannes. "Thermal modelling of a high speed permanent magnet synchronous machine / Andries J. Grobler." Thesis, North-West University, 2011. http://hdl.handle.net/10394/6528.

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Thermal modelling is of great importance in all electric machines but especially in permanent magnet synchronous machines (PMSMs). The thermally fragile permanent magnets (PMs) can more easily be demagnetized at high temperatures. When high speed machines are considered, heat extraction surfaces are small due to the higher energy density. This thesis focuses on the thermal modelling of a high speed slotless PMSM using analytical techniques. From literature it is clear that analytical distributed models have not reached its full potential in thermal modelling of electric machines. Thermal exper

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26

Zhan, Hanlin. "Open winding permanent magnet synchronous machine drives with particular reference to zero sequence." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/18230/.

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27

Wang, Bo. "A triple redundant 3x3-phase fault tolerant permanent magnet synchronous reluctance machine drive." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/19803/.

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Fault tolerant machine drives are key enabling technologies for safety critical applications such as electric vehicle traction, and aerospace power generation, actuation and propulsion. High performance in healthy conditions and excellent fault tolerance against various faults are required for a fault tolerant drive, however, these two aspects usually conflict with each other. Thus, this PhD study aims to develop a fault tolerant machine drive which exhibits high performance and good fault tolerance, and can be realised in a simple and cost-effective manner. First, a novel triple redundant 3x3

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28

Ahmed, Adeeb. "Maximum Torque per Ampere (MTPA) Control for Permanent Magnet Synchronous Machine Drive System." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1375726072.

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29

Zhang, Yuan. "Sensorless Vector Control and Field Weakening Operation of Permanent Magnet Synchronous Machines." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1291219704.

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30

Butt, Casey Benjamin. "Simplified fuzzy logic controller based vector control of an interior permanent magnet motor /." Internet access available to MUN users only, 2003. http://collections.mun.ca/u?/theses,155545.

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31

Gao, Feng. "Interior Permanent Magnet Synchronous Motor Demagnetization Fault Modeling and Analysis by Using Dynamic Phasors Model." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27473.

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Interior permanent magnet synchronous motor (IPMSM) has been widely used in hybrid electric vehicles (HEVs) since the high power density and efficiency. However, the primary drawback of IPMSM is the demagnetization phenomenon caused by the permanent magnets. Modeling of the demagnetization fault are important in developing and designing a protection system for the traction on HEVs, thus, an efficient and accurate IPMSM model for demagnetization fault simulation is necessary. By using the conventional dq0 IPMSM model, the current indicators of demagnetization fault are affected by noise which w

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32

Aorith, Hawa. "Efficiency optimised control of interior permanent magnet machine drives in electric vehicle applications." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/8161/.

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The thesis focuses on the losses minimisation of an interior permanent magnet synchronous machine (IPMSM) drive in electric vehicle applications. As drive losses are a combination of the IPMSM losses and the inverter losses, this thesis is mainly divided into two parts: the first part deals with minimising the copper and iron losses of the IPMSM with due account of machine parameters variations and the voltage drop across the stator winding resistance. A new losses minimisation algorithm (LMA) which considers these issues is presented in this research. A comprehensive off-line simulation study

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33

Garate, Inaki. "Entirely digital permanent magnet synchronous machine controller by a single digital signal processor chip." Thesis, Staffordshire University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237841.

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34

Alsawalhi, Jamal Yousuf. "An asymmetric salient permanent magnet synchronous machine for wide constant power speed range applications." Thesis, Purdue University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3686817.

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<p>This work introduces a novel permanent-magnet synchronous machine (PMSM) architecture that employs rotational asymmetry to increase the torque density output in constant power variable speed applications. A population based multi-objective design optimization algorithm is used to design and analyze the new machine topology. A number of design studies are presented to show that the proposed machine structure outperforms a conventional PMSM machine. Validation of the analytical machine design model using a three dimensional finite element analyses is performed and the results are presented. F

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35

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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36

Manakshya, Nikhil. "Permanent magnet synchronous machine using ferrite vs rare earth magnets : how do they compare?" Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302658.

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Permanent magnet synchronous machines (PMSM are considered as viable options for automotive and traction applications. Rare earth magnets such as Neodymium Iron Boron (NdFeB is the most common choice in the PMSM for electric vehicles to achieve high power density machines. However, rare earth magnets are problematic from ethical and sustainability perspectives. From these perspectives, there are better magnet alternatives, such as ferrites. Ferrite magnets are well known for lower environmental impact, abundance and low cost. Due to a lower residual flux density of a ferrite magnet than that o

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37

Yuan, Yi. "Torque ripple reduction in a permanent magnet synchronous machine using repetitive control techniques (Drift)." Nantes, 2014. http://archive.bu.univ-nantes.fr/pollux/show.action?id=d81a622d-ce54-4be1-8bed-491ba10fa201.

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Les machines synchrones à aimants permanents (MSAP) sont de plus en plus utilisées dans de nombreuses applications grâce à leur efficacité, fiabilité et performances. Cependant, les oscillations de couple peuvent provoquer des oscillations de la vitesse qui sont considérées comme un problème majeur dans certaines applications à faible vitesse. Par conséquent, la commande répétitive (CR) est choisie pour sa forte capacité à réduire ces perturbations périodiques et réduire les oscillations de couple. Il existe deux problèmes principaux lors de l’application de la CR à une MSAP. D’abord, la CR ne

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38

Xia, Bing. "Investigation of novel multi-layer spoke-type ferrite interior permanent magnet machines." Thesis, Cranfield University, 2017. http://dspace.lib.cranfield.ac.uk/handle/1826/12320.

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The permanent magnet synchronous machines have been attracting more and more attention due to the advantages of high torque density, outstanding efficiency and maturing technologies. Under the urges of mandatory energy efficiency requirements, they are considered as the most potential candidates to replace the comparatively low-efficient induction machines which dominate the industrial market. However, most of the high performance permanent magnet machines are based on high cost rare-earth materials. Thus, there will be huge demands for low-cost high-performance permanent magnet machines. Ferr

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39

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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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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41

VASCHETTO, SILVIO. "Design and development of permanent magnet synchronous machines shaft-line embedded in aeronautic engines." Doctoral thesis, Politecnico di Torino, 2011. http://hdl.handle.net/11583/2615701.

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Technological advances in the aerospace industry have improved aircraft efficiency and reduced the cost of air transport, leading since 1960 to a continuous growth of the worldwide air traffic. Today it is postulated that also into the foreseeable future both the passenger and cargo air traffic will continue to growth, increasing the CO2 air transport emissions. In this contest, there are many environmental as well as commercial pressures on aircraft manufacturers to improve performances of future aircraft in terms of safety, air pollution, noise and climate change. To achieve these goals, it

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42

Chi, Song. "Position-sensorless control of permanent magnet synchronous machines over wide speed range." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1186974583.

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43

Dutta, Rukmi Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "A segmented interior permanent magnet synchronous machine with wide field-weakening range." 2007. http://handle.unsw.edu.au/1959.4/40878.

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Many high performance drive applications require wide Constant Power Speed Range (CPSR) for efficient use of energy. The examples of such applications are the starter alternator system of automobiles proposed for the 42V PowerNet, traction in the hybrid/electric vehicle, wind power generator etc. The Permanent Magnet (PM) machine is the natural choice of such niche applications because of their higher efficiency and compact size. However, the Surface Permanent Magnet (SPM) machine with sine distributed winding and radially-laminated Interior Permanent Magnet (IPM) machine with conventional str

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CHANG, LIN CHUN, and 林俊昌. "Design, Analysis and Measurement of Interior Permanent-Magnet Synchronous Machines." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/13902414066731816578.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>92<br>Abstract This thesis presents the design, analysis, and measurement of an interior permanent-magnet synchronous machine. The two-dimension finite-element field analysis program FLUX2D is employed to verify the accuracy of the magnetic circuit model and refine the prototype design. In this machine, the mathematical model is derived and then referred to synchronous frame in order to estimate the parameters. An interior permanent-magnet synchronous machine with eight-pole of rotor and nine-slot of stator is used as an example. The performance

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45

Lee, Jae Suk. "Deadbeat Direct Torque & Flux Control for interior permanent magnet synchronous machines." 2009. http://catalog.hathitrust.org/api/volumes/oclc/501327761.html.

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Chi-Hsun, Lo, and 羅濟勳. "Design and Implementation of a Sensorless Interior Permanent Magnet Synchronous Motor Drive System for Washing Machines." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/02014338844391236373.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>97<br>The thesis investigates the design and implementation of a rotor position/speed estimator and a nonlinear controller for an interior permanent magnet synchronous motor drive system. The implemented system is applied in a washing machine. First, the structure, characteristics and mathematical model of the interior permanent magnet synchronous motor are discussed. Next, a rotor position/speed estimator is proposed. This estimator is simple and unrelated to the mechanical parameters of the motor. After that, a nonlinear controller is designed for the speed control

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47

Sue, Shinn-Ming, and 蘇信銘. "LINEAR TORQUE CONTROL OF INTERIOR PERMANENT MAGNET SYNCHRONOUS MOTOR DRIVES." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/29907446657538165130.

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博士<br>國立清華大學<br>電機工程學系<br>92<br>In this dissertation, new torque control strategies for interior permanent magnet synchronous motor (IPMSM) drives are proposed to fully exploit the reluctance torque as well as to preserve the merit of the simple linear torque control scheme. Main contributions of the dissertation are summarized as follows. Firstly, a novel linear torque control strategy is presented for IPMSM drives in the constant torque limit region such that the resulting torque is proportional to the line current magnitude. A sufficient condition for the existence of the linear torque cont

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48

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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Chang, Chun-Yi, and 張浚溢. "Characteristics Comparison of Surface-Mounted and Interior Permanent Magnet Synchronous Motors." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/873am6.

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碩士<br>逢甲大學<br>電機工程所<br>90<br>A comparative study of surface-mounted and interior permanent magnet synchronous motors with the same dimension was presented in this thesis. To have the same comparative conditions, a motor design program based on Visual Basic 6.0 was written and was employed to design the above motors. The magnetic circuit models for each motor were presented. Field quantities of the model can be easily obtained and incorporated into the motor magnetic design program. Prototypes of the motor were then designed. The performances of the prototype were predicted by conducting the f

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Liaw, Chi-Chieh, and 廖祈傑. "Performance Improvement and Sensorless Control for Interior permanent Magnet Synchronous Motor." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/71735371688373405145.

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碩士<br>國立清華大學<br>電機工程學系<br>90<br>Compared with other motors, the interior permanent magnet synchronous motor (IPMSM) possesses the advantages of high power density, excellent acceleration ability and low noise, etc, and it is gradually applied to industrial applications. The purpose of this thesis is to perform the operating performance improvement and the sensorless control for an IPMSM drive. In order to familiarize with the torque generating characteristics of an IPMSM, its structure and governing equations are first studied. The equivalent circuit parameters of an IPMSM are necessary for ma

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