Minimum target equation numerical solution method suitable for energy management of fuel cell system

A fuel cell system and target equation technology, applied in the field of numerical solution algorithms, can solve problems such as not always converging, and achieve the effect of minimum equivalent hydrogen consumption
CN114357365APending Publication Date: 2022-04-15西安精密机械研究所
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
西安精密机械研究所
Publication Date
2022-04-15

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Abstract

The invention provides a minimum target equation numerical solution method suitable for energy management of a fuel cell system, and solves the technical problem that an existing target equation solution method cannot always converge under the energy management problem of a UUV (Unmanned Underwater Vehicle) fuel cell hybrid power system. According to the solving method, on the basis of a traditional secant method, a dichotomy method is fused in combination with the characteristic that the lithium battery SOC in the fuel battery hybrid system is monotonous about a target equation Lagrange multiplier, the dichotomy method can be used for solving an optimization equation under the boundary value problem, the possible zero division error is effectively avoided, the error can be converged to be close to the optimal solution from any initial value, and the optimal solution can be obtained. The problem that the solving process cannot be converged due to improper initial value selection is solved, and a stable and feasible solving method is provided for solving the energy management problem through the minimum value principle and achieving system optimal control.
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Description

technical field

[0001] The invention belongs to a numerical solution algorithm for boundary problems, and in particular relates to a numerical solution method for a minimum value objective equation suitable for energy management of a fuel cell system, and is suitable for the energy management strategy design of a fuel cell hybrid power supply system on a UUV. Background technique

[0002] The hybrid system composed of lithium battery and fuel cell has both technical advantages, and is one of the development directions of underwater equipment power technology in the future. The optimization objective equation designed based on the minimum value principle as an energy management strategy can improve the overall performance of the system, so the method of solving the optimization objective equation will be the key to the overall performance of the system.

[0003] The working environment of UUV is special, and the minimum hydrogen consumption should be taken as the energy manag...

Claims

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