Title :
Integration over discontinuities in field-circuit coupled simulations with switching elements
Author :
Benderskaya, Galina ; De Gersem, Herbert ; Weiland, Thomas
Author_Institution :
Inst. fur Theorie Elektromagnetischer Felder, Tech. Univ. Darmstadt
fDate :
4/1/2006 12:00:00 AM
Abstract :
Three-dimensional magnetic vector potential formulation discretized by the Finite Integration Technique is coupled to an electrical circuit containing switching elements. As a consequence, the corresponding mathematical model exhibits hybrid (continuous/discrete) behavior. The discontinuity handling algorithm presented here consists of three steps: event detection, event location and determination of consistent initial conditions. The last step of the algorithm is challenging, because the field part causes the major computational cost, and, as a consequence, a lot of computational time. Therefore, a special technique is proposed here by which highly transient phenomena at the circuit side are only resolved by the circuit model avoiding unnecessary evaluations of the field problem. The presented algorithm is illustrated by a three-phase transformer model coupled to a diode rectifier
Keywords :
network analysis; switching circuits; transformer magnetic circuits; 3D magnetic vector potential formulation; circuit analysis; circuit model; diode rectifier; discontinuity handling algorithm; electrical circuit; event detection; event location; field circuit coupled simulations; finite integration technique; switching systems; three-phase transformer model; Circuit simulation; Computational efficiency; Coupling circuits; Diodes; Event detection; Magnetic circuits; Magnetic switching; Mathematical model; Phase transformers; Switching circuits; Circuit analysis; coupled problems; switching systems; time integration;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.872465