Method of Calculating the Main Parameters of the Generator in Various Modes of the Car Regenerative Braking

Abstract

Improving the method of regenerative braking of a car with a start-stop system by installing an additional generator isoffered. An option of the optimal control of the brake torque of an additional generator is offered. The regenerativebraking under consideration required an appropriate method of calculation. This technique makes possible to obtain thedependence of the braking moment on the angular velocity of the generator in various modes, the dependence of theallowable maximum generator power on the speed and load, the dependence of efficiency and the braking moment on thespeed. Redistribution of energy generated by an additional generator for charging the battery and heating the enginecoolant has been introduced. The brake torque of the electric machine G290 is calculated in the mode of regenerativebraking. The obtained results are of practical importance for the transport industry. Calculated N at which the current 150А is reached. According to factory data the ultimate current is reached at 1450 rpm (discrepancy of less than 3%). So, thereis a good coincidence of calculated data. This method does not require a great number of experimental points. Theobtained results are of practical importance for the transport industry.

Keywords

• start-stop system
• mathematical model of synchronous generator
• regenerative braking
• hybrid car
• ecological safety
• valve electric drive