The invention relates to an IGBT based inverter module with dedicated communication protocol for locomotive applications, comprising a power circuit block having one or two H-bridge IGBT module. In case of two H-bridge IGBT modules, they are connected in parallel; and a control circuit block having a gate interface card, a gate control circuit, and current sensing transducer, wherein each IGBT module comprises one each upper IGBT and lower IGBT connected in series making the inverter module with three power terminals; the power terminals are enabled to receive control pulses with two collectors connected with the driver card for monitoring voltage fall pattern across each IGBT; at least one electric motor in the locomotive auxiliary receiving the output from the IGBT module via an inbuilt L-C filter to reduce dv/dt at the motor terminal; and a damping resistor connected in series with the Capacitor of the L-C filter to damp the generated oscillators due to IGBT switching.
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