Modeling of a power consumption by bus in the real operating conditions

In spite of numerous researches concerning a power consumption by the vehicles, during everyday operation there are the significant deviations from the consumptions indicated by the factories-manufacturers. It is caused by a great number of different factors, the main part of which take the operating conditions. In order to determine the power consumption of a vehicle in real operating conditions, it is necessary to solve a difficult problem with many unknowns. While making the investigations, the authors have used a multi-criteria approach that takes into consideration the guided, unguided and conditionally guided factors that influence the vehicles power consumption. The in research work approach provides a modeling of a power consumption by the vehicles with a simultaneous changeability of factors in the determined limits. The researches were made on a base of Т70110 trolleybus. There was made an investigation of influence of every factor on a power consumption, in addition to that there were made 7000 simulations, on the base of which, using a law of large numbers, there were found the corresponding changeability ranges. During the researches there were made 122 simulations of a power consumption, as a result of which there was determined an area of values of a power consumption.

The obtained theoretical results are very well correlated with the experimental data, and a deviation is equal to 3…6 % for normal operating conditions. A comparison of the received data of a power consumption with the researches results, obtained by another researchers, also shows a great convergence.