Design and Thermal Analysis for Braking Resistor Through the Changes of Structure and Component

This paper proposed a new braking resistor which is used for high-speed train dynamic braking and that is a part of the high-speed train propulsion control system. The proposed braking resistor was designed to be fit for the criteria for braking resistor wires, through the analysis of the characteristics of resistance wire in relation to its components and structural changes. To prove the superiority of the proposed braking resistor, the commercial thermal analysis software ANSYS was used in simulating the thermal analysis by natural convection according to current changes so as to analyze the resistor's temperature rise characteristics. Also, targeting both conventional and proposed model braking resistors, the simulation of thermal analysis by forced convection and the temperature rise experiment were performed so as to analyze their temperature saturation characteristics and cooling characteristics.