Steady state operational control method of fuel cell engine

A fuel cell and steady-state operation technology, which is applied in transportation fuel cell technology, motor vehicles, transportation and packaging, etc., can solve the problems that are difficult to adapt to the needs of human survival and development, and achieve the effect of reducing system cost and improving durability

Inactive Publication Date: 2010-06-16
TSINGHUA UNIV
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Problems solved by technology

The traditional energy structure and its utilization methods are incr

Method used

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  • Steady state operational control method of fuel cell engine
  • Steady state operational control method of fuel cell engine
  • Steady state operational control method of fuel cell engine

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Embodiment Construction

[0024] The present invention is illustrated below in conjunction with accompanying drawing.

[0025] Such as figure 1 Shown is the hybrid system configuration of a fuel cell bus. When the fuel cell engine and DC-DC are combined together and viewed as a unified component, the fuel cell determines its own output power through cooperation with the DC-DC, thus realizing the management of the fuel cell's own output energy. From a unified point of view, the fuel cell and DC-DC form an independent energy supply unit, which can actively control its energy output according to various conditions such as vehicle driving conditions and power battery conditions, so it is called here It is an Intelligent Active Auxiliary Power Unit (IAAPU).

[0026] Such as figure 2 Shown is an embodiment of a fuel cell engine actively controlling its own energy output. The control of the fuel cell is indirectly coordinated with the DC-DC control through the vehicle controller, and the DC-DC control co...

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Abstract

The invention discloses a steady state operational control method of a fuel cell engine, belonging to the technical field of new energy fuel cell hybrid power. In the method, a prediction model based on random process description is established according to the information provided by a guided system; the power required by the fuel cell engine is estimated; the dynamic power requirements of a finished automobile is decomposed into a steady state average power provided by fuel cells and an instantaneous auxiliary power provided by power batteries through prediction on traffic power of the next road section and detection combining with the power battery state; the fuel cell passive output energy mode is adjusted to be active prediction output through a DC-DC converter, thus realizing steady state operation of the fuel cell engine. The rate of variation is realized through setting a limit value or a variation curve. The steady state operational control method of the invention reduces dynamic load borne by the fuel cell engine, effectively improves durability of the fuel cell engine, realizes coordination control of each internal part of the fuel cell engine and the engine output energy, and greatly reduces the system cost.

Description

technical field [0001] A control method for a fuel cell hybrid power system based on predictive control is applicable to an electric hybrid drive power system composed of a fuel cell engine and an energy storage device operating under fixed public transport conditions, and belongs to the technical field of new energy fuel cell hybrid power. Background technique [0002] The two major problems of energy crisis and environmental pollution are becoming more and more prominent, seriously affecting the sustainable development of human society, so they are getting more and more attention from governments and people of all countries. Petroleum resources account for more than 35% of the world's energy consumption, a considerable portion of which is consumed in the transportation industry. The traditional energy structure and its utilization methods are increasingly difficult to meet the needs of human survival and development. Facing the dual challenges of energy crisis and environ...

Claims

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Application Information

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IPC IPC(8): B60W10/04B60W10/28B60W20/00B60W20/13B60W20/15
CPCY02T90/34Y02T90/40
Inventor 杨福源欧阳明高李建秋卢兰光华剑锋徐梁飞
Owner TSINGHUA UNIV
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