Abstract
The authors present a novel method for 3-D nonlinear transient eddy current and field computations in electrical devices. The method utilizes the state-space approach for handling the time variation in a volume containing excitation coils, metallic structures, and nonconducting media. A nonlinear magnetic circuit example, excited from a time-varying source, was successfully implemented. A comparison between the results of the proposed state-space method, the Crank-Nicolson technique, and measured data is provided to show the effectiveness and validity of the proposed approach. The results of the comparisons reveal excellent agreement while the proposed method outperforms the Crank-Nicolson technique in terms of CPU time. >
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