Power flow control for hybrid electric vehicles using trolley power and on-board batteries

Abstract

Hybrid electric vehicles (or Electric Multiple Units) can be defined as railway vehicles (EMU) fed by a contact feeder line (trolley) as well as an on-board electrical energy storage device. This report concerns the hybrid control algorithm for the trolley and the lithium ion rechargeable battery. Instead of being cancelled out in the usual way with an inverter-fed EMU when the trolley power supply stops, a regenerative brake using the hybrid control developed has demonstrated the performance required for the designed regenerative power continued to zero speed.