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Документ New design of a fast Thomson drive actuator based on permanent magnets: multiphysics simulation(Technischen Universität Graz, Austria, 2024) Baida, Yevgen I.; Lytvynenko, V. V.; Chepeliuk, O. O.; Leliuk, M. A.; Clemens, Markus; Pantelyat, Michael G.A mathematical model of a new design of a fast Thomson drive actuator for electrical devices of DC networks with two coils and a histable clamp based on permanent magnets is presented. The multiphysics problem includes the calculatoin of the static magnetic field, the electrical circuit taking into accaunt the change in voltage on the capacitor and the back-EMF inducendin the coils, the dynamics of the movement of the armatures of the bistable clamp and the drive, taking into account the change in mass at the moment of opening the contacts, the transient electromagnetic field in a non uniform nonlianer medium, taking into account permanent magnets and the movement of conducting bodies in the transient electromagnetic field. Finite element method simulations involve axisymmetric formulations on a deformable mesh.Документ Multiphysics Models of Innovative Actuators of LV and MV Vacuum Circuit Breakers(Technischen Universität Graz, Austria, 2020) Baida, Evgeniy Ivanovich; Vyrovets, S. V.; Pantelyat, Michael G.; Clemens, MarkusДокумент Lumped Parameter and Circuit Models of Electromechanical Switching Device Electromagnet(Technischen Universität Graz, Austria, 2020) Bajda, Yevgen I.; Clemens, Markus; Pantelyat, Michael G.; Korol, Olena G.Forced DC electromagnets are widely used in modern electromechanical switching devices. In cases, where the total costs of simulation of high-fidelity electromagnetic field's 3D and even 2D models are unacceptably high, alternative techniques based on lumped parameters and magnetic circuit models of switching device electromagnets can be used. The paper presents a technique for calculating the dynamics of forced DC electromagnets using the Maple code as an example of simulation of the magnetic circuit of an electromagnet used in vacuum contactors.