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The operational efficiency of ultrafast actuators used as drives in high-voltage direct-current breakers is at best 5%. To boost their efficiency, the design of the energizing circuit is crucial. A multiphysics finite-element method model coupled with a SPICE circuit model that is able to predict the performance of the actuator with an accuracy of at least 95% has been developed and verified experimentally...
The operational efficiency of ultra fast actuators used as drives in high voltage direct current breakers are at best 5 %. To boost their efficiency, the design of the energizing circuit is crucial. A multi-physics finite element method (FEM) model coupled with a SPICE circuit model that is able to predict the performance of the actuator with an accuracy of at least 95 % has been developed and verified...
The key to perform synthetic making test at full rated voltage for high voltage switches is the making device of current source, which should have the capability to withstand the static and transient voltage and can conduct short-circuit current without excessive erosion, moreover it ought to be hair-trigger and control accurately. A new kind of fast making switch is presented in this research, which...
The paper presents simulation of the dynamics of a recently developed energy efficient permanent magnet electromagnetic valve actuator. The simulation is carried out using decoupled approach where the 3D magnetic field problem is solved separately from the electric circuit and mechanical motion problems. Finite element method with edge elements and ANSYS program are used for the magnetic field analysis...
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