A high-altitude railroad locomotive adapted for more reliable operation at high altitudes, wherein the high-altitude railroad locomotive includes a
semiconductor electric power control component, and wherein due to the high altitude the locomotive would be exposed to high levels of cosmic
radiation tending to damage the
semiconductor electric power control component is provided. The high-altitude locomotive includes
electric power generation equipment, a plurality of traction motors mechanically connected to wheels supporting the high altitude locomotive and an
electric power transmission system for transmitting electrical power from the electric power generation equipment to the plurality of traction motors. A
DC bus is also included and electrically connected to the traction motors and a
power controller for controlling the transmission of
power over the
DC bus, the traction motors having a second active motor volume, wherein the second active motor volume is larger than the first active motor volume to enable the
DC bus voltage of the high-altitude locomotive to be reduced relative to the first
DC bus voltage while generating a range of mechanical power sufficient to propel the locomotive at high altitudes, whereby the combined effects on the
semiconductor electric
power control component caused by the
DC bus voltage of the high-altitude locomotive and by the cosmic
radiation correspond to these effects on the semiconductor electric
power control components of the low-altitude locomotive when operating at low altitudes to reduce the likelihood of failure of the semiconductor electric
power control component of the high-altitude locomotive.