Modelling of Magneto-Elastic Phenomena in Inductive Dynamic Drive

Abstract

-Inductive dynamic drives (IDD) are ultra rapid actuators where the moving part (disc) is subjected to impulse force. This paper presents the second model of inductive dynamic drive -a mechanical model where analytic-numerical approach was applied. The magnetic pressure, which was determined on the basis of the results obtained in the electrodynamic model, becomes the input data for mechanical model. Research with application of the mechanical model is necessary in order to determine the proper disc oscillation frequency and to obtain the stress state control for drive elements to be designed. Also, the selection of drive parameters to keep the disc deformation insignificant (while oscillating) is a condition under which these models do not need to be coupled together.

Study on the Hazard Limitation of Hybrid Circuit Breaker Actuator Operation

“…In the case of displacements, one can see the difference in the waveforms in the initial phase of the movement (x < 1 mm), which can be explained by the fact that the presented drive model assumes, firstly, the ideal stiffness of its moving element (disc) and, secondly, the lack of any vibrations of measurement system, which is unavoidable [18].…”

“…Based on the observation of Figure 8a, [18]. Table 1 at C = 100 μF (a) coil current (b) disc displacement.…”

“…In turn, the stress distribution in the disc is affected not only the by the maximum force value, but also by the space-time distribution of current density and force [12,18]. Therefore, the presented model will be further examined by taking into account the stress analysis for the forces generated by the continuous and discontinuous transfer of energy from the capacitor.…”

Modeling of Electrodynamic Phenomena in an Ultra-Rapid Inductive–Dynamic Actuator as Applied to Hybrid Short-Circuit Breakers—A Review Study

“…The above advantages of the IDD resulted in its taking over from other types of drives (e.g., spring ones) in many circuit breakers, especially in the so-called hybrid circuit breakers (Figure 1b) of both DC [20][21][22][23][24][25][26] and AC used in synchronous switchingoff [27][28][29][30][31][32][33]. The interest of the authors in the study of this type of drive is mainly related to their application in the class of circuit breakers considered [30,[32][33][34][35][36][37][38][39][40][41]. The authors' noted works can be divided into those focusing on the study of electromagnetic [35,40], mechanical [34,38], and thermal [41] phenomena of the drive.…”

“…The interest of the authors in the study of this type of drive is mainly related to their application in the class of circuit breakers considered [30,[32][33][34][35][36][37][38][39][40][41]. The authors' noted works can be divided into those focusing on the study of electromagnetic [35,40], mechanical [34,38], and thermal [41] phenomena of the drive. References [36][37][38] present the development of measurement systems that allow the experimental determination of the basic drive quantities.…”