Electrical and Thermal Modeling of Pulsed Magnets Using Finite Element Analysis
Applied Superconductivity, IEEE Transactions（2010）
Abstract
A precise and efficient finite element model has been developed to solve the coupling of the magnetic field and heating in pulsed coils energized by a capacitor bank. The magnetic field and the current density distribution in each conductor layer of the coil are simulated, taking into account the eddy current, magneto-resistance and heat conduction. The temperature distribution in the conductor during the discharge is also calculated. Eddy currents and magneto-resistance result in a large temperature gradient across the layers. The calculated pulsed field waveform is in good agreement with experimental results for a large range of pulsed coils; this provides useful insight for optimized coil design.
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Key words
magneto-resistance,optimized coil design,pulsed magnets,eddy current,coil conductor layer,finite element model,capacitor bank,magnetoresistance,temperature distribution,current density,thermal modeling,finite element analysis,heat conduction,pulsed coils,magnetic field coupling,calculated pulsed field waveform,magnetic fields,eddy currents,electrical modeling,magnetic field heating,current density distribution,permanent magnets,conductors,magnets,couplings,capacitors,magnetic field,heating,temperature gradient,finite element methods
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