METHOD FOR DETERMINING THE MECHANICAL DEVICE FOR PAIRING OF ROTATION FREQUENCIES VEHICLE WHEELS AND ASYNCHRONOUS GENERATOR SHAFT UNDER GUARANTEED EXCITATION

Purpose. Development of a method for calculating and selecting a mechanical device for coupling the speeds of the vehicle wheel and the shaft of an asynchronous generator under the condition of its guaranteed excitation. Methodology. The method of selection of transmission rollers of the mechanical device of conjugation of rotational frequencies is offered and the algorithm of its calculation is resulted. A method for determining the minimum allowable speed of the asynchronous generator shaft is proposed and the results of graphical and analytical solution for an asynchronous machine type AOL 21-4 are given. Result. The analytical dependence of the minimum allowable speed of the induction shaft as a function of the parameters of the drive motor of internal combustion, capacitive excitation and load, which must be provided by selecting the gear ratio of the mechanical coupling device. Originality. The general criterion for selecting the size of the transmission rollers is presented in the form of a quality functional, which takes into account the range of variation of the crankshaft speed of the primary engine, the range of variation of the diameter of the transmission roller and the range of fuel consumption at the corresponding crankshaft speed. Practical value. The proposed methods and the obtained research results allow to calculate and design devices for mechanical coupling of rotational frequencies of the shafts of the primary propulsion and asynchronous generator, which will expand the scope of the latter as part of local autonomous power supplies.