permanent magnet synchronous machine drives

Computational analysis of a permanent magnet synchronous machine using numerical techniques

Ngày tải lên : 15/09/2015, 22:17

... 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 124 ... 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...

285
990
0

Sensorless drives for permanent magnet synchronous motors

Ngày tải lên : 11/09/2015, 09:07

... magnitude and/or frequency The operation is then similar to operating the motor as a permanent magnet synchronous machine At low frequencies, the rotor field interacts with the stator field to provide ... several unique features The rotor has got surface-mounted permanent magnet constructing a smooth and big air-gap machine Therefore, electromagnetic (EM) torque contributed by reluctance torque can ... 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...

200
1K
0

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...

6
438
2

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 ... motor drives IEEE, 1987, PE-2, (l), pp 55-6‘1 11 CHAMPENOIS, G., MOLLARD, PH., and ROGNON, J.P ’ ‘ T w o digital torque control structures for permanent magnets converter fed sinusoidal synchronous ... 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...

9
351
0

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 ... the type of permanent- magnet ac motor drive, of which there are two main classes, voltage-source-based drives and current-regulated drives Both voltage-source and current-regulated drives may ... 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...

42
353
0

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...

230
763
0

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

Ngày tải lên : 16/09/2015, 12:06

... materials, power electronics and electrical machine design, the permanent magnet synchronous motor (PMSM) has been used widely in different areas e.g hard disk drives (HDDs) As its high efficiency and ... 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...

187
597
0

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

Ngày tải lên : 04/10/2015, 15:45

... 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 in machine ... 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 ... 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...

176
736
0

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...

8
397
1

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...

20
430
0

Analysis and determination of cogging torque and unbalanced magnetic forces in permanent magnet spindle motors for hard disk drives

Ngày tải lên : 15/09/2015, 22:03

... can be kept at an extremely low level Permanent magnet (PM) brushless dc motors are adopted in hard disk drives Modern permanent magnets possess high residual magnetization and high coercivity Thus, ... of the magnet, Rr the inner radius of the rotor yoke, Mn and Nn are the Fourier coefficients of the magnetization of the permanent magnets, r is the relative permeability of the permanent magnet, ... working region of the magnet It can be observed that such type of magnet shows very good linearity in the working region Figure 1.4 A typical demagnetization curve of NdFeB permanent magnet There are...

257
539
0

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...

15
297
0

Chapter 4 permanent magnet ac machines

Ngày tải lên : 16/02/2014, 18:46

... Chapter 14 4.2 VOLTAGE AND TORQUE EQUATIONS IN MACHINE VARIABLES A two-pole, permanent- magnet ac machine, which is also called a permanent- magnet synchronous machine, is depicted in Figure 4.2-1 It ... Conditioner— Machine Interaction for 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 ... is noted that Ea for the permanent- magnet ac machine, (4.4-9), is along the reference (real) axis 129 BRUSHLESS DC MOTOR 4.5 BRUSHLESS DC MOTOR The permanent- magnet ac machine is often referred...

21
324
0

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, ...

6
594
1

Lecture NotesEEE 360 TOPIC 4 Synchronous Machine - Lecture 13 docx

Ngày tải lên : 29/06/2014, 01:20

... 15 SYNCHRONOUS MACHINES Rotor Details 06/29/14 360 Topic Synchr • 16 SYNCHRONOUS MACHINES Round rotor Steel ring Shaft Wedges DC current terminals 06/29/14 360 Topic Synchr • 17 SYNCHRONOUS MACHINES ... leakage is called synchronous reactance X syn • The value of the synchronous reactance is more than 100% 06/29/14 360 Topic Synchr • 29 SYNCHRONOUS MACHINES Operation concept • The synchronous reactance ... Topic Synchr • 35 SYNCHRONOUS MACHINES Rotor generated Flux and Induced Voltage, Round rotor machine • Θm= 00 For the calculation of the induced voltage, the machine is simplified • Magnetic axis...

77
456
0