The limited adhesion and force application of the locomotive to the rail surface at the beginning of motion and at low speeds makes it impossible to use the maximum power of the main generator in diesel electric locomotives. This limitation means that there is unused power and current production capacity in the generator at low speeds. This extra or unused power is wasted or, if used improperly, can cause slippage or excessive heating of the motor traction. In addition, limitations in loading and dimensions limit the possibility of supplying more traction force by a single towing unit, which has led to the use of multiple locomotives with Multi Unit (MU) arrangement. Multiple arrangements also create many challenges in operation. The length of stations and the tonnage of demand create limiting factors for using excess power capacity produced. Therefore, on some lines, excess power capacity produced by second or third towing units is not fully utilized while fuel consumption and disproportionate greenhouse gas emissions increase