Configuration optimization method of double-planet-row power dividing hybrid power system

Abstract

The invention relates to a configuration optimization method of a double-planet-row power split hybrid power system, which comprises the following steps of generating a configuration library accordingto a clutch constraint condition and a possible connection relationship between components; removing configurations which do not meet configuration constraint conditions, and establishing a general energy management strategy of each configuration; obtaining a preliminary optimization configuration library based on a longicorn beard search algorithm; establishing a candidate scheme set screening module; obtaining an optimized configuration of each preliminary optimized configuration based on a particle swarm optimization algorithm and a candidate scheme set screening module; and screening based on the candidate scheme set screening module to obtain an optimal configuration. Compared with the prior art, all feasible configurations of the double planet rows are comprehensively and optimallydesigned, and engineering requirements of different user design objectives can be met; the comprehensive performance evaluation indexes of the economy, the dynamic property, the comfort and the reliability of the configuration are used as an optimization objective function, and the particle swarm optimization algorithm is combined to realize the quick optimization of the optimal scheme of the comprehensive performance of the configuration.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a configuration optimization method of a double planetary row power split hybrid power system. Background technique [0002] With the increasingly serious energy shortage and environmental pollution problems, the regulations on fuel consumption and emissions in the world are becoming increasingly stringent, which has led to the rapid development and application of deep hybrid and plug-in hybrid vehicles. As their representative, power-split hybrid electric vehicles are generally recognized by the market for their excellent fuel consumption performance, and are one of the most competitive solutions to meet both market demand and regulatory requirements. [0003] The power split system consists of a planetary row coupling mechanism, generator, motor, engine, battery, wet brake or clutch, etc. Generally, one or more planetary gear rows are used as a power split devi...

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Problems solved by technology

However, most studies only select acceleration performance or fuel economy or both as indicators for evaluating the effectiveness of configuration optimization design, and rarely consider other manufacturing and engineering-related indicators, lacking comprehensive performance evaluation methods

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