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A novel contactless power supply system for electric trains is proposed based on structure of an air gapped coaxial transformer. Theoretical analysis, simulation results and verification experiments were conducted and the results are shown in this paper. The 96.9 % efficiency at 125 W was observed with an air gap (2.5 mm) coaxial structure. It was conducted that traction power was delivered by coaxial...
The main object of this paper is to contribute to the understanding of the fast transient response capability of the field oriented or vector controlled variable frequency induction motor. Another torque control previously reported in the literature, called the field acceleration method, is shown to have similar transient torque response. These fast response torque controls, used with bipolar transients...
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