Abstract
In the proposed work, an analysis of known methods for selecting basic electrical equipment for autonomous vehicles is performed. It is shown that the known methods have certain disadvantages: the justification for the power of the electric motor of an autonomous vehicle is based on the known power of the internal combustion engine for a similar vehicle, which is not entirely correct. It is shown that the choice of electric motor power should be based on well-known techniques developed in the theory of electric drives. The analysis of published methods for designing electrical equipment for autonomous vehicles shows that they are focused on the design of passenger cars. The technical characteristics of electrical equipment of vehicles from such manufacturers as Mazda, Peugeot, SsangYong, Toyota, Mercedes are analyzed. Based on the well-known test cycle of passenger cars, the power of the electric motor and the average energy of the battery were calculated using the analytical method and the modeling method in the MATLAB Simulink software product at given average speeds and given mileage. Equations are obtained for a preliminary assessment of the traction electric motor power and the energy intensity of the battery for an autonomous ground passenger vehicle as a function of speed. It is shown that the known methods do not take into account the influence of such parameters as wind speed, quality of the road surface, the mass of the transported payload, the angle of the road surface elevation, as well as changes in the efficiency of the electric motor depending on the load factor. The sensitivity of the listed parameters to the power increment overcome by the electric motor has been studied. An improved method for selecting the main electrical equipment for an autonomous vehicle is proposed, taking into account additional factors affecting the power of the traction motor and the energy intensity of the battery. The results obtained can be recommended for choosing the main electrical equipment of an autonomous electric ground passenger vehicle.
Keywords
electric vehicle, traction electric motor, motion cycle, battery, calculation method, simulation and mathematical models
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