Fuel cell hybrid power tramcar polyergic source coupling punishment control system

Abstract

The invention discloses a fuel cell hybrid power tramcar polyergic source coupling punishment control system, and belongs to the field of fuel cell hybrid power energy management control. The system comprises a polyergic source system monitoring unit interface and a coupling punishment control unit; the polyergic source system monitoring unit interface is used for being in communication connectionwith a fuel cell system monitoring unit, a super-capacitor system monitoring unit, a lithium battery system monitoring unit and a traction drive system direct-current bus monitoring unit; the coupling punishment control unit achieves self-adaptive energy distribution of a fuel cell system, a super-capacitor system and a lithium battery system according to the whole car real-time traction work condition and polyergic source operating characteristics, prediction revision is conducted on self-adaptive energy demand distribution according to all energy source performance degradation characteristics, the whole car running stability is guaranteed, and meanwhile the fuel cell system works in real-time optimal net power output, the super-capacitor system and the lithium battery system work in theexpected state-of-charge range, all the energy source system work efficiency is improved, and the cycle service life of all energy sources is prolonged.

Description

technical field [0001] The invention belongs to the field of energy management and control of fuel cell hybrid power, and in particular relates to a multi-energy source coupling penalty control system for a fuel cell hybrid tram. Background technique [0002] With the development of social economy and the acceleration of urbanization, the environmental pollution problems caused by urban traffic congestion and vehicle exhaust emissions have become a persistent disease that plagues every large and medium-sized city. In particular, the exhaust emission of traditional fuel vehicles at idle speed is 20-30 times that of normal driving. Alleviating urban congestion and controlling urban pollution have become urgent problems to be solved in major cities in my country. The development of urban public transportation, especially urban rail transit, and the application of new energy are effective ways to solve urban congestion and air pollution. Among them, the medium-capacity fuel ce...

AI Technical Summary

Problems solved by technology

[0006] However, although the multi-energy source control system for fuel cell hybrid electric tram meets the real-time control and management requirements of multi-energy sources, it does not fully consider the working characteristics of multi-energy sources such as fuel cells, supercapacitors, and lithium batteries.

In particular, unlike the operating characteristics of small and medium-power fuel cell systems, the power output of high-power fuel cell systems is closely related to the metering ratio characteristics of hydrogen and air. Due to the inherent electromechanical transient delay of the air compressor, the fuel cell will be in a state of transient oxygen starvation and oxygen saturation, affecting the optimal net power output of the fuel cell system and reducing the cycle life of the fuel cell system

However, the existing fuel cell hybrid electric tram energy management system does not fully take into account the net output power and operating life characteristics of the fuel cell system, nor does it effectively quantify the feedback of the fuel cell system's slowly changing transient response to the auxiliary energy storage power supply system. Therefore, the above-mentioned rules and strategies relying on expert experience cannot guarantee the optimal matching of multiple energy sources in real time, and are not suitable for energy management of high-power fuel cell hybrid electric trams, and cannot effectively balance vehicle power and fuel economy

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