Abstract

Studies have been carried out on rail brakes applying linear induction motor technology. This brake is capable of generating braking force without contact. In addition to the aspect of non-contact brakes, no onboard power supply for energizing this brake is required by using dynamic braking. This dynamic braking is performed with an excitation inverter, however there is a need to have a method which does not use an excitation inverter to reduce cost. Therefore, the authors devised an inverter-less excitation method using the self-excitation phenomenon of induction generators and tested it on a track-wheel testing machine. It was clarified that the method devised is useful as a low-cost excitation system.

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