Particle algorithm-optimized composite power supply electric vehicle power distribution strategy

Abstract

The invention aims to provide a particle algorithm-optimized composite power supply electric vehicle power distribution strategy. According to the technical schemes, after a vehicle control model is established according to a vehicle-mounted composite power supply control system, required power is divided into different frequency bands; the required power is borne by different energy types according to the different frequency bands; and a particle algorithm is used for optimizing a distribution strategy, so that an optimal control strategy of multi-energy power distribution can be obtained. Onthe premise that the load requirement of a whole vehicle is met, a fuel cell is better protected, and the advantages of three kinds of energy are brought into full play; in addition, a self-adaptivefilter is adopted to replace traditional constant-value filtering, so that the role of a super capacitor in rapidly providing instantaneous high power is better played, and the charging and discharging process of the super capacitor is protected; a fuzzy controller in the control strategy is subjected to parameter optimization by adopting the particle swarm algorithm, so that the control effect inthe aspects of reducing the power fluctuation of the fuel cell and reducing the hydrogen consumption of the fuel cell is better.

Description

technical field [0001] The invention belongs to the field of composite power electric vehicles, in particular to a composite power electric vehicle power distribution strategy optimized by particle algorithm. Background technique [0002] With the increasingly severe energy crisis and air pollution problems, new energy vehicles with the advantages of zero emission, no pollution, and low noise are developing rapidly. In order to increase the cruising range of new energy vehicles, fuel cells are generally selected as their main energy source. However, when the vehicle accelerates and starts, the load power fluctuates violently, which is likely to cause impact on the internal electrochemical structure of the fuel cell and shorten its life. Moreover, the fuel cell cannot absorb braking energy, which is not conducive to the energy saving of new energy vehicles. Therefore, lithium batteries and supercapacitors are selected as auxiliary energy sources to provide additional power w...

AI Technical Summary

Problems solved by technology

Due to the introduction of lithium batteries and supercapacitors, the energy management of the vehicle is more complicated. How to coordinate the output of multiple energy sources to minimize the impact of fuel cells and hydrogen consumption has become a thorny issue.

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