Energy recovery data characteristics extraction of flywheel energy storage control system for vehicular applications

Abstract

Flywheel energy storage system seems to be especially well suited to hybrid powertrain, which allows regenerative braking and power augmentation during acceleration in automotive vehicles. This article presents a novel electrical flywheel hybrid system through the analysis of the dynamic response of energy recovery process and the transmission characteristics of flywheel energy storage system. The power transmission process and energy flow of the vehicle with flywheel energy storage system were elaborated during braking. Energy recovery performance evaluation indexes were put forward, and the energy conversion characteristic test was conducted by experimental rig. The experimental result shows that the use of low-power motor speed control for gear ring can reduce the degree of jerk of transmission powertrain during energy recovery process and improve the energy recovery rate, and the net energy recovery rate tends to a stable value of 33%. The research extracts some features for flywheel energy storage control system and provides a theoretical basis for the further vehicular applications research.