Title :
Design studies on low voltage contactors by using transient finite element analyses with circuit coupling
Author :
Schmidt, Erich ; Degwerth, Andreas
Author_Institution :
Inst. of Electr. Drives & Machines, Vienna Univ. of Technol.
Abstract :
The behaviour of a low voltage contactor is analyzed with nonlinear transient finite element analyses. For a simulation as close as possible to normal operational conditions, a voltage driven model is concerned additionally to a current excited model. A strong circuit coupling takes into account for the eddy currents in the copper shading rings. Thereby, different arrangements of the shading rings are analyzed in detail. A comparison of the steady state current characteristics obtained from the numerical calculations and from measurements shows a very good agreement
Keywords :
contactors; coupled circuits; eddy currents; finite element analysis; transient analysis; circuit coupling; copper shading rings; current excited model; eddy currents; low voltage contactors; transient finite element analyses; voltage driven model; Circuit analysis; Circuit simulation; Contactors; Copper; Coupling circuits; Eddy currents; Finite element methods; Low voltage; Steady-state; Transient analysis;
Conference_Titel :
Electrical and Computer Engineering, 2005. Canadian Conference on
Conference_Location :
Saskatoon, Sask.
Print_ISBN :
0-7803-8885-2
DOI :
10.1109/CCECE.2005.1556975
