permanent magnet synchronous machines

Use of an extension of the park's transformation to determine control laws applied to a non sinusoidal permanent magnet synchronous motor

Ngày tải lên : 03/01/2014, 19:50

... 0): 13.14O) le = p.Wrq(0) iq DYNAMIC BEHAVIOUR OF NON-SINUSOIDAL PERMANENT- MAGNETSYNCHRONOUS DRIVES I * A four poles pmanent -magnet synchronous motor has been modelled through a finite element code ... written under the form: We can also write the dynamic model of a star connected nonsinusoidal permanent magnet synchronous motor with constant air gap (figure 1) 34 The Variations of these fluxes give ... of the Park's transfonnation permits us to have a best knowledge of the non sinusoidal permanent magnet synchronous motor We are so able as well to analyse the classical control laws such as...

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Chapter 4 permanent magnet ac machines

Ngày tải lên : 16/02/2014, 18:46

... two-pole, permanent- magnet ac machine, which is also called a permanent- magnet synchronous machine, is depicted in Figure 4.2-1 It has three-phase, wye-connected stator windings and a permanent- magnet ... Electronically Commutated DC Permanent Magnet Machines, ” IEEE Trans Magn., Vol 17, November 1981, pp 3284–3286 [3] T.M Jahns, “Torque Production in Permanent- Magnet Synchronous Motor Drives with ... Figure 4.6-3 Torque-speed characteristics of permanent- magnet ac machine with τs increased by a factor of by increasing Ls 140 PERMANENT- MAGNET AC MACHINES 2π ⎞ ⎛ ibs = 2is cos ⎜ θ r + φi − ⎟...

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Sensorless drives for permanent magnet synchronous motors

Ngày tải lên : 11/09/2015, 09:07

... Abstract Initiated by the advent of high performance processors and energy concerns, Permanent Magnet Synchronous Motors (PMSM) are increasingly being adopted in numerous consumer products ... Figure 5.1 Motor positional inductance profile without saturation 88 Figure 5.2 Magnetic field produced by permanent magnet on rotor 89 Figure 5.3 Influence of armature winding current to stator ... are increasingly replacing universal and single-phase induction motors with three phase Permanent Magnet Synchronous Motors (PMSMs) to increase efficiency, reliability and power density Today,...

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Analysis, design and control of permanent magnet synchronous motors for wide speed operation

Ngày tải lên : 15/09/2015, 22:06

... Method GA Genetic Algorithms MMF Magneto-motive Force xvii xviii MTPA Maximum Torque Per Ampere PI Proportional Integral PM Permanent Magnet PMSM Permanent Magnet Synchronous Motor PWM Pulse Width ... 1.2 Characteristics of Permanent Magnet Materials 1.3 Structures for exterior permanent magnet motors 1.4 Structures for interior permanent magnet motors 1.5 ... and Interior Permanent Magnet (IPM) motors in which the permanent magnets are hidden inside the rotor, Fig 1.4 The surface-mounted PMSM (Fig 1.3 a) in EPM motors can have magnets magnetized radially...

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Computational analysis of a permanent magnet synchronous machine using numerical techniques

Ngày tải lên : 15/09/2015, 22:17

... Permanent Magnet Machines 1.2 Permanent Magnet Materials 1.3 Line-Start Permanent Magnet Synchronous Machines 1.4 Computational Analysis of Permanent ... excitation and permanent magnet excitation The former method is used in conventional DC and synchronous machines, and the latter one is used in permanent magnet( PM) machines Permanent magnet machines ... Model of Interior Permanent Magnet Synchronous Machine 118 4.3 The Phasor Diagram of a Permanent Magnet Synchronous Machine 122 4.4 Cross Section of Line-Start Permanent Magnet Synchronous Machine...

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FAULT DIAGNOSIS OF PERMANENT MAGNET SYNCHRONOUS MOTOR BASED ON MECHANICAL AND MAGNETIC CHARACTERISTIC ANALYSIS

Ngày tải lên : 16/09/2015, 12:06

... 4.2 Unbalanced Magnetic Pulls 41 2.1 Static Unbalanced Magnetic Pull 41 2.2 Dynamical Unbalanced Magnetic Pull 46 2.3 Incline Unbalanced Magnetic Pull 49 2.4 54 4.3 Axial Unbalanced Magnetic Pull ... FAULT DIAGNOSIS OF PERMANENT MAGNET SYNCHRONOUS MOTOR BASED ON MECHANICAL AND MAGNETIC CHARACTERISTIC ANALYSES YU YINQUAN A THESIS SUBMITTED FOR ... Electromagnetic force calculation by 2D finite element method 65 5.3.1 Static Unbalanced Magnetic Pull 66 ii Contents 5.3.2 Dynamic Unbalanced Magnetic Pull 78 79 5.4.2 Axial Unbalanced Magnetic...

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Design optimization of permanent magnet synchronous motors using response surface analysis and genetic algorithm

Ngày tải lên : 04/10/2015, 15:45

... 1.1.1 The development of Permanent Magnet Machines 1.1.2 Features of permanent magnet motors Permanent magnet synchronous motors iii 1.2.1 ... widespread use of permanent magnet machines Figure 1.2: Evolution of the magnetic material during the 20th century [2] 1.1.2 Features of permanent magnet motors The use of permanent magnet material ... Figures 1.1 Magnetic characteristics of the main class of permanent magnets [2] 1.2 Evolution of the magnetic material during the 20th century [2] 1.3 Partial demagnetization of a permanent magnet...

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Standards for efficiency of electric motors permanent magnet synchronous motor technology

Ngày tải lên : 26/11/2015, 09:42

... line-starting permanentmagnet synchronous motor,” in Proc Int Conf Electrical Machines, Portugal, Sept 2008, pp 1–6 [30] C Lee and B Know, “Design of post-assembly magnetization system of line start permanent ... Electrical Machines (ICEM’08), Algarve, Portugal, Sept 2009, pp 259–264 [12] Siemens, “SD100 TEFC NEMA motors,” Product Tech Catalogue, 2009 [13] Leroy-Somer, Synchronous permanent magnet motor,” ... in Proc Int Conf Electrical Machines and Systems, Korea, Oct 2007, pp 1629–1634 [25] J Soulard and H Nee, “Study of the synchronization of line-start permanent magnet synchronous motors,” in Proc...

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AN1292 sensorless field oriented control (FOC) for a permanent magnet synchronous motor (PMSM) using a PLL estimator and field weakening (FW)

Ngày tải lên : 11/01/2016, 17:05

... CAUTION: During field weakening of a Surface Permanent Magnet (SPM) type of PMSM, mechanical damage of the rotor and the demagnetization of the permanent magnets is possible if careful measures are ... Graph ΨPM d Intrinsic characteristic of permanent magnet Normal characteristic of permanent magnet Where: H = Field intensity B = Field induction BR = Permanent induction value HC = Coercivity ... interior permanent magnet Each type has its own advantages and disadvantages with respect to the application needs The proposed control scheme has been developed around a surface-mounted permanent magnet...

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A review on position speed sensorless control for permanent magnet synchronous machine based wind energy conversion systems

Ngày tải lên : 27/09/2016, 20:23

... interior permanent- magnet synchronous motor drive,” IEEE Trans Ind Appl., vol 28, no 1, pp 144–150, Jan./Feb 1992 [57] M A Hoque and M A Rahman, “Speed and position sensorless permanent magnet synchronous ... sensor-based motor drives Many position sensorless control schemes have been developed for permanent- magnet synchronous machines (PMSMs) used in applications such as electric-drive vehicles, home appliances, ... quasi sliding-mode rotor position observer-based sensorless control for interior permanent magnet synchronous machines, ” IEEE Trans Power Electron., vol 28, no 12, pp 5618–5629, Dec 2013 [64]...

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Passivity-based current controller design for a permanent-magnet synchronous motor

Ngày tải lên : 24/11/2016, 10:43

... property of the closed-loop system Permanent- magnet synchronous motor model 2.1 PMSM model in the general direct-quadrature reference frame The PMSM uses buried rare earth magnets Its electrical behaviour ... the dq frame, RS is the stator winding resistance, the φf are the flux linkages due to the permanent magnets, np is the number of polepairs, ωm is the mechanical speed, vd and vq are the stator ... moment of inertia, fVF is the viscous friction coefficient, and τL is the load torque The electromagnetic torque τe can be expressed in the dq frame as follows: τe = Ld − Lq id iq + φf iq np (3)...

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Synchronous Machines

Ngày tải lên : 09/11/2013, 05:15

... contrast to some other types of electric machines (DC machines, induction machines) where the speed of rotation is dependent on the loading of the machine Synchronous machine with non-uniform air-gap ... uniform, magnetic reluctance (resistance) seen by windings will vary In synchronous machines with non-uniform air-gap stator remains to be cylindrical, but the rotor is not Consequently, magnetic ... 2-pole structure for simplicity This type of synchronous machines is often called hydro-machine or salient-pole synchronous machine, since these machines are used in hydro-powered electric generation...

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Strategy for the instantaneous torque control of permanent magnet brushless DC drives2

Ngày tải lên : 03/01/2014, 19:52

... excited permanent- magnet motor - design and performance Third International Conference on Electrical Machines and Drives, IEE, London, UK, Nov 16th-18th 1987, pp 246249 LOW, T.S Permanent- magnet ... PH., and ROGNON, J.P ’ ‘ T w o digital torque control structures for permanent magnets converter fed sinusoidal synchronous machines Proceedings of the 1988 Conference on Industrial Electronics ... can be summarised in a motor dynamic equation: T, = Ja + Dw + 7; (1) The electromagnetic behaviour of a three-phase synchronous machine is modelled as consisting of a field winding f and three stator...

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Tài liệu Permanent Magnet MOTORS ppt

Ngày tải lên : 19/01/2014, 20:20

... of another up coming magnet placed right next to #1 magnet 4th Stage Resistance of the attraction #2 #3 #1 Place the third magnet as so and that 3rd magnet will pull the #2 magnet out of the resistance ... source for larger ceramic permanent magnets Note: you will not need to stack the angled carriage magnets they will work just fine just using one N S magnet stack Permenant magnet motors are very ... motor to run the car a to hp motor can run your home Page Permanent Magnet Motor Files #376 When building your magnet array if you use magnets as seen on page you will get a dead spot on #7 and...

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Tài liệu Synchronous Machines pptx

Ngày tải lên : 23/01/2014, 06:20

... contrast to some other types of electric machines (DC machines, induction machines) where the speed of rotation is dependent on the loading of the machine Synchronous machine with non-uniform air-gap ... uniform, magnetic reluctance (resistance) seen by windings will vary In synchronous machines with non-uniform air-gap stator remains to be cylindrical, but the rotor is not Consequently, magnetic ... 2-pole structure for simplicity This type of synchronous machines is often called hydro-machine or salient-pole synchronous machine, since these machines are used in hydro-powered electric generation...

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electric machine Chapter 5 Synchronous Machines

Ngày tải lên : 14/02/2014, 16:36

... salient-pole synchronous machine Figure 5.22 Phasor diagram of a salient-pole synchronous generator §5.3.2 Phasor Diagrams for Salient-Pole Machines 19 Figure 5.23 Phasor diagram for a synchronous ... (4.50) Synchronous generators can be readily operated in parallel: interconnected power systems When a synchronous generator is connected to a large interconnected system containing many other synchronous ... two-pole, three-phase cylindrical-rotor synchronous machine §5.2.1 Rotor Self-Inductance §5.2.2 Stator-to-Rotor Mutual Inductances §5.2.3 Stator Inductances; Synchronous Inductance §5.2.4 Equivalent...

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Chapter 5 SYNCHRONOUS MACHINES

Ngày tải lên : 16/02/2014, 18:46

... we assume that the stator of the synchronous machine is open-circuited and the rotor is being driven at synchronous speed then, from (5.9-19) 170 SYNCHRONOUS MACHINES Ias q-axis r V qs r I ds ... generator If the fault had been allowed to remain on the machines slightly longer, the machines would have become unstable, 182 SYNCHRONOUS MACHINES 165.6 Te, 106 N·m 110.4 55.2 90 180 d, Electrical ... Figure 5.5-1 Equivalent circuits of a three-phase synchronous machine with the reference frame ﬁxed in rotor: Park’s equations 154 SYNCHRONOUS MACHINES vkq1 = rkq1ikq1 + ′r ′ ′r p ψ kq1 ′r ωb...

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Chapter 14 permanent magnet AC motor drives

Ngày tải lên : 16/02/2014, 18:54

... 542 PERMANENT- MAGNET AC MOTOR DRIVES Electrical System Power Converter PM AM Command Signal Control Sensors Mechanical System Figure 14.1-1 Permanent- magnet ac motor drive The ... space-vector-modulated inverter to an idealized source is established 544 PERMANENT- MAGNET AC MOTOR DRIVES The six-stepped inverter-based permanent- magnet ac motor drive is the simplest of all the strategies ... to have a logical output when they are under a south magnetic pole and a logic when they are under a north magnetic pole of the permanent magnet, and are arranged on the stator of the PMAM as...

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Expansion of Operating Limits for Permanent Magnet Motor by Current Vector Control

Ngày tải lên : 08/03/2014, 22:01

... to the permanent magnet flux linkage [6]; If E is large and the coercivity of the magnet is not enough, then the permanent magnet demagnetization may create a serious problem and the magnet torque ... values of the demagnetizing coefficient are about 0.8 In some cases, the permanent magnet is demagnetized irreversibly by the flux-weakening control VI DEMAGNETIZATION OF PERMANENT MAGNET If the ... FOR PERMANENT MA(;NET MOTORS 4) The control method considering the demagnetizationlimit is analyzed If the permanent magnet has a straight demagnetization curve, as does a rare-earth permanent magnet, ...

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Brushless Permanent Magnet Motor Design- P1 pptx

Ngày tải lên : 02/07/2014, 08:20

... Concepts Basic relationships Magnetic field sources Air gap modeling Slot modeling Example Magnetic Materials Permeability Ferromagnetic materials Core loss Permanent magnets PM magnetic circuit model ... analysis and design of rotational brushless permanent- magnet (PM) motors Brushless dc, PM synchronous, and PM step motors are all brushless permanent- magnet motors These specific motor types evolved ... brushless permanent- magnet motors work and what the basic performance tradeoffs are Used wisely, this information will lead to better engineered motor systems Why a book on brushless permanentmagnet...

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