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# IEEE Transactions on Magnetics

## Issue 2  Part 2 • Feb. 2013

This issue contains several parts.Go to:  Part 1

## Filter Results

Displaying Results 1 - 25 of 31
• ### Front cover

Publication Year: 2013, Page(s): C1
| PDF (335 KB)
• ### IEEE Transactions on Magnetics publication information

Publication Year: 2013, Page(s): C2
| PDF (196 KB)

Publication Year: 2013, Page(s):785 - 786
| PDF (153 KB)
• ### IEEE Magnetics Society Distinguished Lecturers for 2013 [4 abstracts]

Publication Year: 2013, Page(s):787 - 790
| PDF (206 KB)
• ### A New Approach to Design Flexible Magnetic Active Shielding

Publication Year: 2013, Page(s):791 - 794
Cited by:  Papers (3)
| | PDF (646 KB) | HTML

The shielding of low-frequency magnetic fields from “sensible” domains (e.g., in hospital areas or in control rooms in industrial environments) is usually achieved using ferromagnetic walls (passive shielding) or suitably designed coils, fed with appropriate currents (active shielding). Anyway, when disturbing fields are not known in advance, and weight or cost issues prevent passive... View full abstract»

• ### A Mortar Cell Method for Electro-Thermal Contact Problems

Publication Year: 2013, Page(s):795 - 798
Cited by:  Papers (3)
| | PDF (976 KB) | HTML

A 3-D mortar domain decomposition approach based on the cell method (CM) for analyzing electro-thermal contact problems is presented. The computational domain is subdivided into non-overlapping regions discretized according to the CM, where variables and field equations are expressed directly in integral form suitable for coupling the contact problem to the electro-thermal one in the bulk regions.... View full abstract»

• ### Adaptive Time Domain Sparse Wavelet Approximations to Transient Space-Time Electromagnetic Wave Fields

Publication Year: 2013, Page(s):799 - 802
| | PDF (1045 KB) | HTML

The purpose of this contribution is to introduce a method for constructing temporally adaptive, sparse, accurate, efficient and reliable representations of large scale, discretely sampled transient space-time electromagnetic wave fields, through the use of sparse wavelet approximations. The temporally adaptive sparse wavelet approximations are achieved by performing a three step computational proc... View full abstract»

• ### Efficient and Accurate Approximation of Infinite Series Summation Using Asymptotic Approximation and Super Convergent Series

Publication Year: 2013, Page(s):803 - 806
Cited by:  Papers (2)
| | PDF (1180 KB) | HTML

We present an approach for very quick and accurate approximation of infinite series summation arising in electromagnetic problems. This approach is based on using asymptotic expansions of the arguments and the use of super convergent series to accelerate the convergence of each term. It has been validated by obtaining very accurate solution for propagation constant for shielded microstrip lines us... View full abstract»

• ### Experimental Study of Compound-Structure Permanent-Magnet Synchronous Machine Used for HEVs

Publication Year: 2013, Page(s):807 - 810
Cited by:  Papers (2)
| | PDF (839 KB) | HTML

A compound-structure permanent-magnet synchronous machine (CS-PMSM) system used for hybrid electric vehicles (HEVs) enables the internal combustion engine (ICE) to operate at the optimum efficiency region independent of road conditions, thus decreasing emissions and fuel consumption. The key part CS-PMSM is a high integration of two electric machines. The connection ways of the CS-PMSM in the HEV ... View full abstract»

• ### Optimal Permanent-Magnet Geometries for Dipole Field Approximation

Publication Year: 2013, Page(s):811 - 819
Cited by:  Papers (20)
| | PDF (1884 KB) | HTML

The dipole approximation for magnetic fields has become a common simplifying assumption in magnetic-manipulation research when dealing with permanent magnets because the approximation provides convenient analytical properties that are a good fit at large distances. What is meant by “good fit at large distances” is generally not quantified in the literature. By using a parameterized m... View full abstract»

• ### Fine Structure Observation in Magnetostriction Near the First-Order Phase Transition Temperature in Gd $_{5}$Si $_{1.95}$Ge $_{2.05}$

Publication Year: 2013, Page(s):820 - 823
Cited by:  Papers (2)
| | PDF (753 KB) | HTML

Gd5(SixGe1 - x)4 has a complex magnetic-structural phase diagram which can be divided into three distinct regions. It exhibits an unusual first-order coupled magnetic-structural phase transition in the region x <; 0.51. A series of magnetostrictive strain measurements were carried out as a function of magnetic field strength at different temperatures ... View full abstract»

• ### Transition Noise Analysis of Recording Media With a Soft Underlayer (SUL) and an Antiferromagnetic Soft Underlayer (AF-SUL)

Publication Year: 2013, Page(s):824 - 828
Cited by:  Papers (4)
| | PDF (862 KB) | HTML

A perpendicular magnetic recording system has been modeled for the purpose of analyzing transition noise, particularly “jitter.” Conventional perpendicular media and “soft” exchange coupled composite (ECC) media with a conventional soft underlayer (SUL) and an antiferromagnetic soft underlayer (AF-SUL) have been investigated using micromagnetic simulation. The fast Four... View full abstract»

• ### Improved Decoding Algorithm of Serial Belief Propagation With a Stop Updating Criterion for LDPC Codes and Applications in Patterned Media Storage

Publication Year: 2013, Page(s):829 - 836
Cited by:  Papers (4)
| | PDF (1718 KB) | HTML

In high density patterned media storage system, the “multiple islands per read head” model is taken into account for inter-track interference (ITI) in bit-patterned media (BPM). It has been proposed that low-density parity-check (LDPC) codes could improve the symbol error rate (SER) performance significantly when only considering AWGN noise alone over the storage channel. LDPC decodi... View full abstract»

• ### Evaluation of the Magnetic Field Generated by the Inverter of an Electric Vehicle

Publication Year: 2013, Page(s):837 - 844
Cited by:  Papers (4)
| | PDF (877 KB) | HTML

In hybrid and electric vehicles, passengers sit very close to an electric system of significant power, which means that they may be subjected to high electromagnetic fields. The hazards of long-term exposure to these fields must be taken into account when designing electric vehicles and their components. Among all the electric devices present in the power train, the electronic converter is the mos... View full abstract»

• ### Electromigration in Giant Magnetoresistance Spin Valve Read Sensors Under Pulsed DC Magnetic Field: An Analytical and Numerical Study

Publication Year: 2013, Page(s):845 - 850
| | PDF (1107 KB) | HTML

A theoretical model is proposed to investigate the electromigration (EM) behavior in giant magnetoresistance spin valve (GMR SV) read sensors under pulsed direct current (dc) magnetic field during sensor operation. It was found that the externally applied magnetic field gives rise to a more severe Joule heating and consequently raises the device temperature leading to EM acceleration. Black's equa... View full abstract»

• ### Robust Global Optimization of Electromagnetic Devices With Uncertain Design Parameters: Comparison of the Worst Case Optimization Methods and Multiobjective Optimization Approach Using Gradient Index

Publication Year: 2013, Page(s):851 - 859
Cited by:  Papers (7)
| | PDF (1785 KB) | HTML

The uncertainties in design variables are unavoidable in the optimal design of electromagnetic devices, and there is an imperative demand to find a robust design, which is insensitive to the uncertainties and remains within the feasible region of constraints even perturbed by the uncertainties. In this paper, a gradient-based worst case optimization (G-WCO) algorithm is proposed in a limited uncer... View full abstract»

• ### New Formulas for Mutual Inductance and Axial Magnetic Force Between Magnetically Coupled Coils: Thick Circular Coil of the Rectangular Cross-Section-Thin Disk Coil (Pancake)

Publication Year: 2013, Page(s):860 - 868
Cited by:  Papers (6)
| | PDF (2321 KB) | HTML

This paper deals with novel formulas for calculating the mutual inductance and the magnetic force between two coaxial coils in air comprising a circular coil of the rectangular cross section and a thin disk coil (pancake). The mutual inductance and the magnetic force are expressed over the complete elliptical integrals of the first and second kinds, Heuman's lambda function, and three terms that m... View full abstract»

• ### Device Geometry Effects in an Integrated Power Microinductor With a Ni $_{45}$Fe $_{55}$ Enhancement Layer

Publication Year: 2013, Page(s):869 - 873
Cited by:  Papers (5)
| | PDF (400 KB) | HTML

In an integrated power microinductor, the size and shape of the magnetic material will have a relationship to the permeability and inductance of the device. To demonstrate these effects, a set of inductors with closed Ni45Fe55 films were fabricated having similar structures but different footprint sizes and aspect ratios (ARs). Magnetic and electrical characterization was per... View full abstract»

• ### Experimental Analysis of the Magnetic Flux Characteristics of Saturated Core Fault Current Limiters

Publication Year: 2013, Page(s):874 - 882
Cited by:  Papers (13)
| | PDF (1889 KB) | HTML

A fault current limiter (FCL) is a device that is designed to reduce the impact of fault currents on electricity networks and increase the availability of such networks to consumers. One particular FCL technology that is currently attracting worldwide attention, from both researchers and commercial engineering companies, is the saturated core FCL. This device utilizes the change in permeability be... View full abstract»

• ### Principles of the Trans-Rotary Magnetic Gear

Publication Year: 2013, Page(s):883 - 889
Cited by:  Papers (16)
| | PDF (1329 KB) | HTML

This paper introduces the concept of the trans-rotary magnetic gear (TROMAG). The TROMAG is a magnetic device consisting of a rotor and a translator with an air gap in between, capable of converting linear motion to rotation, and vice versa, and doing the gearing action at the same time. Although its structure suggests that the TROMAG is simply the magnetic dual to the mechanical lead-screw, the a... View full abstract»

• ### Speed Range Extension for Simplex Wave Winding Permanent-Magnet Brushless DC Machine

Publication Year: 2013, Page(s):890 - 897
Cited by:  Papers (4)
| | PDF (1809 KB) | HTML

A new speed range extension method for the simplex wave winding permanent-magnet (PM) brushless DC machine is proposed in this paper. The machine is with PM excitation, electric commutation, and close-connected winding identical to the brushed DC machine (see Zhu , “A new simplex wave winding permanent-magnet brushless DC machine,” IEEE Transactions on Magnetics, vol. 47, no. 1, pp. ... View full abstract»

• ### Winding Design, Modeling, and Control for Pole-Phase Modulation Induction Motors

Publication Year: 2013, Page(s):898 - 911
Cited by:  Papers (11)
| | PDF (3591 KB) | HTML

A general winding design rule for the pole-phase modulation (PPM) induction machine is proposed, and three different structures, such as conventional winding machine, toroidal winding machine, and dual-rotor toroidal winding machine, are compared. The results verify advantages of the conventional winding machine over the others in application to the PPM. A uniform model for the conventional windin... View full abstract»

• ### Sensorless Method for Eccentricity Fault Monitoring and Diagnosis in Switched Reluctance Machines Based on Stator Voltage Signature

Publication Year: 2013, Page(s):912 - 920
Cited by:  Papers (21)
| | PDF (1879 KB) | HTML

In this paper, a comprehensive method for eccentricity fault diagnosis in switched reluctance machines (SRMs) during offline and standstill modes is presented. This sensorless method is able to detect occurrence, location, direction, and severity of the eccentricity fault in SRM. First, the theory of the method is presented, and then its background formulation is explored and discussed. In order t... View full abstract»

• ### Analytical Model of Permeance Variation Losses in Permanent Magnets of the Multipole Synchronous Machine

Publication Year: 2013, Page(s):921 - 928
Cited by:  Papers (7)
| | PDF (1825 KB) | HTML

Permeance variation in the air gap of the permanent-magnet synchronous machine induces eddy-current losses in its permanent magnets even in the absence of stator currents. This paper proposes a new analytical approach to analyze these losses using the permeance-variation vector function introduced for the air-gap magnetic-flux density distribution to take into account the stator teeth. The Laplace... View full abstract»

• ### Influence of Stator Slotting on the Performance of Permanent-Magnet Machines With Concentrated Windings

Publication Year: 2013, Page(s):929 - 938
Cited by:  Papers (16)
| | PDF (2092 KB) | HTML

The use of slotted stator permanent-magnet machines with concentrated windings is increasing in industry. In this paper, the effect of the slot opening on flux linkage, internal voltage, mean torque, rotor eddy current loss, and stator iron losses is evaluated. This gives new insight into the influence of slotting on the performance of machines with a small slot opening. In addition, the slot open... View full abstract»

## Aims & Scope

IEEE Transactions on Magnetics publishes research in science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Pavel Kabos
National Institute of Standards and Technology