Method for matching and optimizing parameters of mixed power locomotive with fuel cell and super capacitor

Abstract

The invention discloses a method for matching and optimizing parameters of a mixed power locomotive with a fuel cell and a super capacitor. The method comprises: first, according to the index requirements of the power performance of the mixed power locomotive, determining the mixedness range of a system; then, building a multi-objective optimization function by using the power property of the whole locomotive, the cost of the whole locomotive, and the quality of a driving system under a certain working condition as optimization objects; solving the function by adopting a high-speed group intelligent optimization algorithm, and using the matching combination that the minimum value is used for the objective function as the optimum parameter matching result of the system of the locomotive; then, distributing load working conditions of various power sources by adopting a load distribution algorithm; building an objective function based on energy flow according to the distributed working conditions and the work efficiency of each part and based on the matched and optimized results of the parameters; optimizing the energy flow of the system; solving the global optimization problem with constraint conditions by adopting the high-speed group intelligent optimization algorithm. The method has the advantages that the consumption of hydrogen is reduced, the recycled service life of each power source is prolonged, and the performance of the whole locomotive is improved.

Description

technical field [0001] The invention relates to high-power fuel cell / supercapacitor hybrid locomotive technology, in particular to the technical field of hybrid locomotive energy management optimization control technology. Background technique [0002] The locomotive with medium capacity is an effective supplement to the subway, light rail, and public transportation system, and is an important part of forming an ecological and integrated transportation system. It can be used as the backbone line of a big city, the connection line of the suburbs, and the backbone line of a small and medium-sized city . Although the non-catenary locomotive technology can avoid the erection of catenary lines, it cannot get rid of the traction power supply system, and still needs to be equipped with traction substations and current receiving stations. Fuel cell technology is a clean energy technology with the characteristics of high efficiency and environmental protection. It is known as the mo...

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Problems solved by technology

The advantage of these methods is that the execution speed is fast, but the formulation of the rules usually relies on expert experience, known system mathematical models and experimental test results, etc., which cannot guarantee the best matching of energy flow in the vehicle, and cannot obtain the best fuel economy.

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