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The rotary type electromagnetic actuator is often used in the electromagnetic mechanical components design, such as high-sensibility switch, signal electromagnetic relay, and so on. This type of actuator is required to have high conversion speed and action frequency, high signal reliability, and low power consumption per volume. In this paper, a new type of rotary electromagnetic actuator with permanent...
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...
A new 27.5 kV rated vacuum circuit breaker with bi-stable permanent magnetic actuator is designed and developed on the basis of electromagnetic field analysis coupled motion. Firstly, the static characteristics of the permanent magnetic actuator are obtained using the finite element model with use of Ansoft software package. Next, the electrical circuit and mechanical models which describe the behavior...
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