Characteristic Analysis and Design of a Thomson Coil Actuator Using an Analytic Method and a Numerical Method

Modelling Thomson Coils With Axis-Symmetric Problems: Practical Accuracy Considerations

“…Due to the direction of the induced eddy currents, a repulsive magnetic force appears between coil and armature, enabling rapid armature reaction and high speed displacement. Given the relevance of the design in the operation of ultra-high speed mechanical switches, such as MV [1][2][3][4], HV DC breakers [5] and traction applications [6], considerable effort has been put into its modelling, design and optimization [6][7][8][9][10][11][12][13][14][15][16]. From the existing modelling tools, transient 2D FEA has been shown to provide accurate results for armature speeds around 10 m/s [14,15].…”

Experimental Validation of a Finite Element 2D Axial Thomson Coil Model with Inductance and Resistance Compensation

“…The TC operates by magnetic repulsion due to induced eddy currents within the armature. Given the relevance of the design for ultra-high speed actuation applications, considerable effort has been put into the development of numerical models to predict accurately actuator behaviour [6][7][8][9][10][11]. FEA software has been shown to provide simulation results where the accuracy of the predicted armature speed decreases with armature velocity increase [12].…”

Research on ultra-fast vacuum mechanical switch driven by repulsive force actuator

“…9,[12][13][14][15][16][17] The former is with relatively low accuracy, but easier to be used in the optimal design, the latter is considered more accurate, but not so easy to be used in concert with the optimization design method. The FEM computation is usually considered as a verification tool as a supplementary of the prototype tests.…”