A General Electromagnetic Field-Circuit Coupling Method Based on Time-Stepping FEA for Performance Analysis of PWM Switching Converters Considering Hysteresis Effects

Publisher:
American Institute of Physics
Publication Type:
Journal Article
Citation:
Journal of Applied Physics, 2008, 103 (7), pp. 1 - 3
Issue Date:
2008-01
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Considering the special characteristics existing in the pulse-width modulated (PWM) switching converter, a general method for the time-stepping finite element analysis based electromagnetic field coupling with its feeding circuit used in the analysis of PWM switching converter considering hysteresis effects is introduced in this paper. Comparing with the electromagnetic field-circuit indirect coupling method (ICM), the proposed method has overcome the drawback that the ICM cannot take the hysteresis effects into account. Compared with the electromagnetic field-circuit direct coupling method (DCM), the proposed method has the similar accuracy but higher efficiency. Furthermore, like the ICM, the proposed method also divides the system with higher state dimensions produced by the DCM into two subsystems with lower state dimensions; this may reduce the algorithm convergence problem which often happens in high dimensional systems.
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