Efficiency optimization control method of fuel cell array system for tramcar

Abstract

The invention discloses an efficiency optimization control method of a fuel cell array system for a tramcar. The efficiency optimization control method comprises an off-line calculation process and anonline control process, wherein the off-line calculation process comprises the following steps: an efficiency curve of a single fuel cell array under different output powers is acquired through an off-line data collection module, and a function of efficiency varying with the output powers is obtained through an efficiency curve fitting module, which is efficiency for optimizing the parallel use of the fuel cell array; then the turning power when the fuel cell array is used in parallel is obtained through a turning power calculation module; the online control process comprises the following steps: the output current and the busbar voltage of each branch are obtained through a data acquisition module, an output power value required for each fuel cell branch is obtained through a power distribution module, then the corresponding control quantity is obtained according to the obtained output power value and in combination a control quantity calculation module, and finally, a correspondingimpulse signal is obtained through a PWM (Pulse-Width Modulation) module, so that the control on the fuel cell array system is completed, and the system efficiency is optimized.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to an efficiency optimization control method of a fuel cell array system for trams. Background technique [0002] Today's energy problem is a serious problem that cannot be ignored. The traditional fossil energy is decreasing or even exhausted, which can no longer meet the daily needs of human beings. As a result, more and more new high-quality energy sources are emerging, and at the same time, it is necessary to master and apply advanced energy technologies. The development and utilization of new, clean and renewable energy sources is imperative. With the rapid rise of distributed power generation technology, fuel cells, as an important part of distributed power generation, have attracted widespread attention for their clean and efficient features. Moreover, the fuel cell has the characteristics of low operating temperature, low noise, fast start-up, and no pollution, and is a ...

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Problems solved by technology

[0005] However, there is relatively little research on fuel cell power generation arrays at home and abroad, and there is no relatively detailed explanation and explanation for the power distribution method of multi-stack array fuel cell systems

It is impossible to ensure that each unit in the fuel cell array is in the best working condition, and it is impossible to effectively reduce the frequency of starting and stopping of the fuel cell, resulting in a short service life of the fuel cell, low working efficiency of the fuel cell, poor fuel economy, low cost, and poor stability

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