Through the proper configuration of the DC-DC converter (which is also known as linear converter or switching regulator), it is possible to transfer energy between DC power sources. In this configuration, this converter is connected to the high voltage. • Why linear converter is configured for the application? The linear converter is configured to operate in voltage control mode and is responsible for regulating the voltage. This converter can be configured to regulate either the output voltage or the output current, depending on the application requirements. The input voltage can vary between 280v and 400V while this converter maintains the voltage up to 800V. This converter regulates the output voltage or outputs current as required. Note that the converter is bi-directional i.e. they connect the input and output current. According to the present invention, buying railway DC-DC converters can smooth the flow of current in the applications. • ...