Magnetic Flux
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IEEE Organizations related to Magnetic Flux
Back to TopConferences related to Magnetic Flux
Back to TopINTERMAG 2014  IEEE International Magnetics Conference
Intermag is the premier conference on applied magnetics which allows scientists and engineers from all over to world to meet and discuss novel developments in magnetics, magnetic materials and associated technologies.
2013 IEEE International Conference on Mechatronics and Automation (ICMA)
The objective of ICMA 2013 is to provide a forum for researchers, educators, engineers, and government officials involved in the general areas of mechatronics, robotics, automation and sensors to disseminate their latest research results and exchange views on the future research directions.
Periodicals related to Magnetic Flux
Back to TopApplied Superconductivity, IEEE Transactions on
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
Biomedical Engineering, IEEE Transactions on
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
Magnetics, IEEE Transactions on
Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The Transactions publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.
Mechatronics, IEEE/ASME Transactions on
Synergetic integration of mechanical engineering with electronic and intelligent computer control in the design and manufacture of industrial products and processes. (4) (IEEE Guide for Authors) A primary purpose is to have an aarchival publication which will encompass both theory and practice. Papers will be published which disclose significant new knowledge needed to implement intelligent mechatronics systems, from analysis and ...
Xplore Articles related to Magnetic Flux
Back to TopMHD analysis and preparation of an experiment for developing the Korean Test Blanket Module
Dong Won Lee; Jae Sung Yoon; Seol Ha Kim; Muhwan Kim; Seungyon Cho 2011 IEEE/NPSS 24th Symposium on Fusion Engineering, 2011
To develop a Korean Test Blanket Module (TBM) for an International Thermonuclear Experimental Reactor (ITER), particularly for a liquid breeder type, a currently developed conventional code, CFX, with an ElectroMagnetic (EM) module for analyzing the Magnetohydrodynamic (MHD) effect of the liquid breeder under a high magnetic field was numerically validated using a theoretical equation and previous experimental data. From a ...
Torque optimization analysis with magnetic saturation models for induction machines
Dewei Xu; Dongqi Zhu; Xinjian Jiang Proceedings IPEMC 2000. Third International Power Electronics and Motion Control Conference (IEEE Cat. No.00EX435), 2000
A new model based on MT synchronous rotating frame of induction machines with magnetic saturation is developed. In this model, it is assumed that the saturated area mainly on the Maxis and the undersaturated magnetic path is kept when stator and rotor currents make balanced MMF. This assumption is proved by finite element analysis (FEA). The result is the suitable ...
Sensor development and application on the oilgas pipeline magnetic flux leakage detection
Yang Lijian; Liu Gang; Zhang Guoguang; Gao Songwei 2009 9th International Conference on Electronic Measurement & Instruments, 2009
The current development of oilgas pipeline magnetic flux leakage (MFL) testing sensor, this paper discussed working principle and application of the coil sensor and the Hall element sensor. The two types of sensors in practical applications were analyzed for their characteristics. The article evaluates the sensor application and development situation and proposes for MFL testing sensor development direction.
Modeling of polyphase brushless exciter behavior for failing diode operation
T. Zouaghi; M. Poloujadoff IEEE Transactions on Energy Conversion, 1998
This paper describes an original numerical method for modeling rectified polyphase salient pole synchronous machines which are commonly utilized for large turbogenerator brushless excitation systems. Simulating this kind of system under normal (and especially abnormal) operating conditions, would be of great help for designers and operators in order to improve their reliability and availability. The proposed method is especially convenient ...
An Overmoded WBand CoupledCavity TWT
Elizabeth J. Kowalski; Michael A. Shapiro; Richard J. Temkin IEEE Transactions on Electron Devices, 2015
A 94GHz overmoded travelingwave tube (TWT) has been designed, fabricated, and successfully tested. The TWT operates in the rectangular TM31 mode of the cavity, while lower order modes are suppressed using selectively placed strips of lossy dielectric. The 87cavity TWT circuit was directly machined from Glidcop, a dispersionhardened copper. The TWT was tested in a 0.25 T solenoidal magnetic field ...
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Educational Resources on Magnetic Flux
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MHD analysis and preparation of an experiment for developing the Korean Test Blanket Module
Dong Won Lee; Jae Sung Yoon; Seol Ha Kim; Muhwan Kim; Seungyon Cho 2011 IEEE/NPSS 24th Symposium on Fusion Engineering, 2011
To develop a Korean Test Blanket Module (TBM) for an International Thermonuclear Experimental Reactor (ITER), particularly for a liquid breeder type, a currently developed conventional code, CFX, with an ElectroMagnetic (EM) module for analyzing the Magnetohydrodynamic (MHD) effect of the liquid breeder under a high magnetic field was numerically validated using a theoretical equation and previous experimental data. From a ...
Torque optimization analysis with magnetic saturation models for induction machines
Dewei Xu; Dongqi Zhu; Xinjian Jiang Proceedings IPEMC 2000. Third International Power Electronics and Motion Control Conference (IEEE Cat. No.00EX435), 2000
A new model based on MT synchronous rotating frame of induction machines with magnetic saturation is developed. In this model, it is assumed that the saturated area mainly on the Maxis and the undersaturated magnetic path is kept when stator and rotor currents make balanced MMF. This assumption is proved by finite element analysis (FEA). The result is the suitable ...
Sensor development and application on the oilgas pipeline magnetic flux leakage detection
Yang Lijian; Liu Gang; Zhang Guoguang; Gao Songwei 2009 9th International Conference on Electronic Measurement & Instruments, 2009
The current development of oilgas pipeline magnetic flux leakage (MFL) testing sensor, this paper discussed working principle and application of the coil sensor and the Hall element sensor. The two types of sensors in practical applications were analyzed for their characteristics. The article evaluates the sensor application and development situation and proposes for MFL testing sensor development direction.
Modeling of polyphase brushless exciter behavior for failing diode operation
T. Zouaghi; M. Poloujadoff IEEE Transactions on Energy Conversion, 1998
This paper describes an original numerical method for modeling rectified polyphase salient pole synchronous machines which are commonly utilized for large turbogenerator brushless excitation systems. Simulating this kind of system under normal (and especially abnormal) operating conditions, would be of great help for designers and operators in order to improve their reliability and availability. The proposed method is especially convenient ...
An Overmoded WBand CoupledCavity TWT
Elizabeth J. Kowalski; Michael A. Shapiro; Richard J. Temkin IEEE Transactions on Electron Devices, 2015
A 94GHz overmoded travelingwave tube (TWT) has been designed, fabricated, and successfully tested. The TWT operates in the rectangular TM31 mode of the cavity, while lower order modes are suppressed using selectively placed strips of lossy dielectric. The 87cavity TWT circuit was directly machined from Glidcop, a dispersionhardened copper. The TWT was tested in a 0.25 T solenoidal magnetic field ...
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IEEEUSA EBooks

Power System Phenomena and their Impact on Relay System Performance
This chapter contains sections titled: Power System Oscillations Leading to Simultaneous Tripping of Both Ends of a Transmission Line and the Tripping of One End Only on an Adjacent Line Generator Oscillations Triggered by a Combination of Lg Fault, Loss of Generation, and Undesired Tripping of Three 138kV Lines Stable Power Swing Generated During Successful Synchronization of a 200MW Unit Major System Disturbance Leading to Different Oscillations for Different Transmission Lines Emanating from the Same Substation Appearance of 120Hz Current at a Generator Rotor During a HighSide Phaseto Ground Fault Generator NegativeSequence Current Flow During Unbalanced Faults Inadvertent (Accidental) Energization of a 170MW Hydro Generating Unit Appearance of ThirdHarmonic Voltage at Generator Neutral Variations of Generator Neutral ThirdHarmonic Voltage Magnitude During System Faults Generator Active and Reactive Power Outputs During a GSU HighSide Lg Fault Loss of Excitation of a 200MW Unit Generator Trapped (Decayed) Energy Nonzero Current Crossing During Faults and MisSynchronization Events Generator Neutral ZeroSequence Voltage Coupling Through StepUp Transformer Interwinding Capacitance During a HighSide Ground Fault Energizing a Transformer with a Fault on the High Side within the Differential Zone Transformer Inrush Currents Inrush Currents During Energization of the GroundedWye Side of a YG/Delta Transformer Inrush Currents During Energization of a Transformer Delta Side TwoPhase Energization of an Autotransformer with a Delta Winding Tertiary During a Simultaneous Lg Fault and an Open Phase Phase Shift of 30ï¿¿ï¿¿ Across the Delta/Wye Transformer Banks ZeroSequence Current Contribution from a Remote TwoWinding Delta/YG Trans former Conventional PowerRegulating Transformer Core Type Acting as a ZeroSequence Source Circuit Breaker ReStrikes Circuit Breaker Pole Disagreement During a Closing Operation Circuit Breaker Opening Resistors Secondary Current Backfeeding to Breaker Failure Fault Detectors Magnetic Flux Cancellation Current Transformer Saturation Current Transformer Saturation During an OutofStep System Condition Initiated by MisSynchronization of a Generator Breaker Capacitive Voltage Transformer Transient Bushing Potential Device Transient During Deenergization of an EHV Line Capacitor Bank Breaker ReStrike Following Interruption of a Capacitor Normal Current Capacitor Bank Closing Transient Shunt Capacitor Bank Outrush into Closein System Faults SCADA Closing into a ThreePhase Fault Automatic Reclosing into a Permanent LinetoGround Fault Successful HighSpeed Reclosing Following a LinetoGround Fault ZeroSequence Mutual CouplingInduced Voltage Mutual Coupling Phenomenon Causing False Tripping of a HighImpedance Bus Differential Relay During a Line PhasetoGround Fault Appearance of Nonsinusoidal Neutral Current During the Clearing of ThreePhase Faults Current Reversal on Parallel Lines During Faults Ferranti Voltage Rise Voltage Oscillation on EHV Lines Having Shunt Reactors at their Ends Lightning Strike on an Adjacent Line Followed by a Cg Fault Caused by a Separate Lightning Strike on the Monitored Line Spill Over of a 345kV Surge Arrester Used to Protect a Cable Connection, Prior to its Failure Scale Saturation of an A/D Converter Caused by a Calibration Setting Error Appearance of Subsidence Current at the Instant of Fault Interruption Energizing of a Medium Voltage Motor that has an Incorrect Formation of the Stator Winding Neutral Phase Angle Change from Loading Condition to Fault Condition References

HBFEM and Its Future Applications
By using the harmonic balancefinite element method (HBFEM) approach, magnetic nonlinear characteristics, hysteresis losses, eddy current losses, and magnetic flux distribution for each harmonic component can be calculated and presented. HBFEM can provide magnetic flux distribution and eddy current losses at each harmonic. The calculation method of the electromagnetic coupling is implemented by combining the electric circuit, which reflects characteristics of the ports, with the magnetic circuit and the internal magnetic field's distribution. Considering the periodic characteristics of electromagnetic fields under steadystate excitation, a limited Fourier series is used to represent the periodic behavior of the steadystate variables, and solving equations in the time domain can be avoided. The harmonic balance method is the effective method for obtaining the approximate periodic solution of a nonlinear differential equation. The magnetic circuit model established from the geometric structure of the power transformer can be used to calculate and analyze nonlinear electromagnetic problems, considering the coupled electric circuits.

Nonlinear Electromagnetic Field and Its Harmonic Problems
Harmonics are mainly generated from both the component level i.e., nonlinear magnetic or dielectric components and the circuit level, including power electronic circuits. This chapter illustrates the examples of load current waveforms with harmonics. To understand harmonic distribution in the transformer the excitation voltage and magnetic flux waveforms and associated current waveforms should be investigated. The chapter discusses the impact of harmonics on renewable energy and microgrid systems. Power electronic devices, as used for renewable energy systems and microgrids, might be able to cause harmonics. Since harmonic loading, direct current (DC) injection, voltage ripple, and voltage range of operation are key areas that influence the operation of the transformer in renewable energy and microgrid systems, the harmonic balance finite element method (HBFEM) is an effective method to analyze the harmonic problem in the transformer connected with voltage or current sources.

Effect of High Fault Currents on Protection and Metering
This chapter reviews the literature on effects of high fault currents on protection and metering equipment. It discusses the capabilities and limitations of existing shortcircuit protection devices. High fault currents are well known to cause saturation of iron core current transformers (CTs). This can adversely affect the performance of system protection devices. CTs are intended to deliver a secondary current that is directly proportional to the primary current with as little distortion as possible. During normal operation, the CT secondary winding induces a magnetic flux that opposes and nearly cancels the primary induced flux. CT saturation may cause overcurrent relays to misoperate or fail to operate, resulting in a failure of the protection system. Protective relaying is an integral part of any electrical power system. The fundamental objective of system protection is to quickly isolate a problem so that the unaffected portions of a system can continue to function.

This chapter contains sections titled: Hidden RF Characteristic of Passive Components How and Why RF Energy Is Developed Within the PCB Magnetic Flux and Cancellation Requirements Routing Topology Configurations Layer Stackup Assignment Radial Migration CommonMode and DifferentialMode Currents RF Current Density Distribution Grounding Methodologies Ground and Signal Loops (Excluding Eddy Currents) Aspect RatioÂ Â Distance Between Ground Connections Image Planes Slots Within an Image Plane Functional Partitioning Critical Frequencies (/20) Logic Families This chapter contains sections titled: References

This chapter contains sections titled: Point ChargeÂ Â Coulomb's Law Electric Flux Density and Gauss's Law Electric Flux Conservation of Energy Potential Difference Field from Line and Surface Charges Static EField Summary Line CurrentÂ Â BiotSavart Law Magnetic Field from a Line Current Magnetic Flux Density and Magnetic Flux Ampere's Law Lorentz Force Magnetic Field Units and Conversions Static Magnetic Field Summary This chapter contains sections titled: References

This chapter contains sections titled: Magnetic Flux Line Plots Magnetic Energy Magnetic Force on Steel Magnetic Pressure on Steel Lorentz Force Permanent Magnets Magnetic Torque Problems References

HBFEM for Nonlinear Magnetic Field Problems
This chapter discusses mainly the numerical modeling and analysis of electromagnetic fields in switching power supplies. It uses harmonic balance analysis, combined with the finite element method (FEM), to solve problems arising from nonlinear, harmonic, eddycurrent and power loss problems of transformers used in switching power supplies. The chapter also discusses the harmonic balanceFEM (HBFEM) model and computed results, compared with experimental results. The harmonic components of current and magnetic flux can help to accurately analyze and design the magnetic core and winding structures, and further determine the power loss and leakage flux in the magnetic system. The numerical model of voltage excitation with a nonlinear magnetic field is more accurate than conventional magnetic fieldonly analysis. The EM full wave solution can be obtained from HBFEM based numerical computation. To verify the HBFEM based solution, a singlephase direct current (DC)biased switching transformer with a voltage source driven model is used.

Radio frequency identification (RFID) takes advantage of inductive links to not only power up the ultralowpower RFID tags, which cannot have batteries due to their size, weight, and lifetime limitations, but also read the tags, stored information through back telemetry. The main physical principle behind the operation of telemetry coils is Faraday's law, which states that when the total magnetic flux through a conductive loop. Power amplifiers are commonly utilized in wireless power transmission links to drive the primary coil by converting the DC power of an external source. Bidirectional wireless data transmission is essential for IMD and RFID systems to establish a shortrange wireless communication between the Tx and Rx parts of the system. Inductive coupling as a viable technique to power up devices and also establish a wireless data communication link is widely used to remove direct electrical contact between the energy source and the target device.

Magnetohydrodynamics Formulation
Magnetohydrodynamics (MHD) was originally applied mostly to astrophysics and geophysics. In MHD the motion of collective charged particles is described by an electrically conducting fluid with the usual fluid dynamic variables of velocity, density and pressure or temperature. The interactions of fluid dynamics and electromagnetics are exclusively derived from the magnetic flux density. This chapter presents a systematic derivation of the governing equations of MHD. The first and foremost assumption for MHD formulation is that the physical phenomena are describable by macroscopic scales or in the framework of continuum mechanics. The electromagnetic waves are compound waves for which the compression and rarefaction components can coexist and the direct consequence of the nonconvexity of the ideal MHD equations. The chapter discusses additional computational simulations to show the lack of detailed plasma composition that is required for determining electric conductivity of plasma in the MHD formulation.
Standards related to Magnetic Flux
Back to TopIEEE Guide for the Measurement of QuasiStatic Magnetic and Electric Fields
This project describes measurement goals associated with characterizing quasistatic magnetic and electric fields, e.g. power frequency and other extremely low frequency fields, and available methods for accomplishing them. The guide should be used in conjunction with IEEE Std 13081994 (IEEE Recommended Practice for Instrumentation: Specifications for Magnetic Flux Density Meters  10 Hz to 3 kHz), which defines terminology and ...