Characteristic analysis and design of a novel permanent magnetic actuator for a vacuum circuit breaker

Abstract

In this study, a novel permanent magnetic actuator (PMA) termed a separated permanent magnetic actuator (SPMA) is proposed. The efficiency of the proposed SPMA is significantly higher than a conventional PMA because of its innovative structure, with which the magnetic flux path is efficient and the holding forces can be designed independently taking the unique values of each load into consideration. Hence, the SPMA is smaller in size and lower in cost than the conventional PMA. For the SPMA, a characteristic analysis and design method using a two-dimensional finite element method, an equivalent circuit, an equation of motion and a time difference method is suggested in this study to save time and reduce the costs incurred because of the experimental trial and error deign. The SPMA was designed and prototyped such that the usefulness of the SPMA for application to a vacuum circuit breaker and the reasonableness of the suggested characteristic analysis and design method were confirmed by the experimental data.

Optimal Design of Permanent Magnetic Actuator for Permanent Magnet Reduction and Dynamic Characteristic Improvement using Response Surface Methodology

“…can be adequately represented in a mathematical manner through the following three equations: (a) the electric circuit equation with voltage source, (b) the magnetic field equation for magnetic flux and energy, and (c) the equation of motion for velocity and force [5,8,16]. …”

Analysis, Design and Dynamic Simulation of Novel Limited Swing Angle Torque Permanent Magnet Motor for High Voltage Circuit Breaker Application

“…Machine 2 represents the less-slots structure of a limited angle permanent magnet brushless DC servo motor actuator, and Machine 3 represents the proposed LSATPMM. 20 20 In [33][34][35][36], different permanent magnetic actuators were presented to improve efficiency, reliability and other performance factors. Ref [5,6,37,38] used the monostable and bistable Thomson-coil actuator (TCA) to increase the rapidity, reduce the complexity and improve the reliability of a high-voltage circuit breaker.…”

Modelling of Magneto-Elastic Phenomena in Inductive Dynamic Drive

“…In the previous studies of IDD [5,6,7] such analyticnumerical approach has not been used, and this approach has the obvious advantage of significantly shortening the computation time. The computation time will be even more important if in the future there appears an idea of fully coupling electrodynamic model with a mechanical.…”