Fuzzy energy management strategy for hybrid electric vehicles on battery state-of-charge estimation by particle filter

Abstract The battery/ultracapacitor hybrid power supply system can solve the problems of high cost and short life a single system, energy management has become vital issue in field electric vehicles. In this paper, fuzzy strategy on state-of-charge (SOC) estimation battery is proposed. Particle filter (PF) algorithm used to estimate SOC battery, then estimated result regarded as input variable controller, distribution obtained after logic operation. simulation results show that PF closer actual value SOC. When embedded into controller for joint simulation, it found charge discharge current, consumption are reduced, which shows algorithm’s effectiveness. It also provides specific reference further study control