Methodological Approaches to Estimation of the Braking Energy Recovery Properties

The article discusses methodological approaches to assessing the regenerative braking of a vehicle. The main approaches to the efficiency of recuperation from the point of view of the relativity of the returned and consumed energy are presented. A test procedure is presented on a laboratory setup consisting of an internal combustion engine, a generator, a traction electric motor, a capacitor energy storage unit, a load simulation unit and a control and measurement system. Measurements and recording of currents and voltages were carried out using the L-Card system. The motion control of the laboratory hybrid setup was carried out using the CX-Drive software. The authors present the results of laboratory tests of recuperation. Studies have been carried out to assess the properties of energy recovery in road conditions on a serial hybrid vehicle. The integral values were used to determine the maximum and average braking regenerative power, as well as the energy recovered during the test. The results of evaluating the efficiency of recuperation for movement in urban conditions are presented. During the tests, braking was carried out at a speed of 44 km/h. The research results allow us to conclude about the efficiency of recuperation. A comparison is made between laboratory and road tests of energy recovery. The materials presented by the authors expand the existing methodology for assessing the performance properties of regenerative braking of vehicles with hybrid and all-electric motors.