Increasing Energy Efficiency and Reliability of Electric Multiple Unit Re-generative Braking

The article provides a brief overview of a number of promising proposals aimed at improving the technology of regenerative braking of modern domestic AC motor vehicle rolling stock in terms of reliability and energy efficiency. Regenerative braking has become widespread especially in railway transport, it provides the maximum speed of trains on the site due to adjusting braking in automatic mode, significantly reduces the longitudinal-dynamic forces in the train, reduces the wear of wheel sets and brake pads, increases the safety of train movements. However, the application of regenerative braking on electromotive requires solving a number of problems, two main ones can be distinguished - low power factor of rectifier-inverter converters and low operability in case of emergency operation. The article discusses existing technologies aimed at eliminating these problems, and also presents a set of technical solutions aimed at improving the energy efficiency and operational reliability of modern domestic AC car rolling stock. The proposed technical solutions can be implemented both during factory repairs as part of modernization and in the manufacture of new electric trains.