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Fuel cell hybrid power system energy management strategy

A hybrid power system and fuel cell technology, applied in electric vehicles, battery/battery traction, vehicle energy storage, etc., can solve the problems of limited service life of components and insufficient dynamic response of PEMFC, and achieve effective energy distribution and dynamic Response and the effect of output plausibility

Active Publication Date: 2020-08-28
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For hybrid power systems, there are often problems of insufficient dynamic response of PEMFC and limited service life of components. Therefore, how to distribute load power reasonably and effectively has become the focus and difficulty of research.

Method used

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  • Fuel cell hybrid power system energy management strategy
  • Fuel cell hybrid power system energy management strategy
  • Fuel cell hybrid power system energy management strategy

Examples

Experimental program
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Effect test

Embodiment 1

[0033] This embodiment provides a fuel cell hybrid system energy management strategy for a robot, which is used to distribute the power of the PEMFC / LIB hybrid system. The energy management strategy is divided into 9 according to the different states of the input variables of the energy management controller. different rules to output PEMFC power P FC , the input variables include the power demand (P dem ) and lithium battery state of charge (SOC), its specific process includes the following steps:

[0034] Step 1. Limit P to the optimal output range of PEMFC dem It is divided into three states: high, normal and low, and 500W and 200W are used as P dem The demarcation line of the PEMFC, that is, the upper limit P of the optimal output interval of the PEMFC FCmax and lower limit P FCmin Set to 500W and 200W respectively. When P dem more than P FCmax , try to reduce the output of PEMFC, when P dem less than P FCmin , try to increase the output of the PEMFC.

[0035] Si...

Embodiment 2

[0056] figure 1 It is a schematic structural diagram of the fuel cell hybrid power system of the mobile tracking robot in Embodiment 2 of the present invention; figure 2 It is a schematic diagram of energy distribution of the fuel cell hybrid power system of the mobile tracking robot in Embodiment 2 of the present invention.

[0057] Such as figure 1 , 2 As shown, in this embodiment, the fuel cell hybrid power system energy management strategy of Embodiment 1 is applied to a mobile tracking robot, and an arc welding seam tracking experiment is carried out, thereby verifying the effectiveness of the energy management strategy of Embodiment 1.

[0058] Compared with straight line welds, circular arc welds can better reflect the irregular shape of weld seams in the actual welding process, and there are obvious power changes during start-up and operation, which represent the robot's performance in a typical weld seam tracking process. traction power. The radius of the arc use...

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Abstract

The invention belongs to the field of cell energy management, and particularly relates to a fuel cell hybrid power system energy management strategy. The management strategy is used for distributing the power of the proton exchange membrane fuel cell / lithium cell hybrid power system. Characteristics are as follows: according to different states of input variables of the energy management controller, the input variables comprise a power demand Pdem and a cell state of charge SOC, nine conditions are divided and correspond to nine rules combining determinacy rules and fuzzy rules to determine the proton exchange membrane fuel cell power PFC output in the hybrid power system. According to the fuel cell hybrid power system energy management strategy, effective energy distribution of the fuel cell hybrid power system can be improved, and dynamic response and output rationality of the system are remarkably improved.

Description

technical field [0001] The invention belongs to the field of battery energy management, and in particular relates to an energy management strategy for a fuel cell hybrid power system. Background technique [0002] With the development of science and technology, welding, as a comprehensive application technology, has developed from a traditional thermal processing technology to a material connection and forming integrating multiple disciplines such as materials, metallurgy, structure, mechanics, machinery and electronics. Technology, from automobiles weighing several tons to electronic components less than one gram, utilizes welding technology in varying degrees in manufacturing. Due to the presence of welding fume, arc light, and metal spatter, the working environment of welding is very harsh, and the quality of welding has a decisive impact on product quality. These have prompted the emergence and hot sale of welding robots. At present, welding robots have accounted for mo...

Claims

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Application Information

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IPC IPC(8): B60L50/75
CPCB60L50/75Y02T10/70Y02T90/40
Inventor 吕学勤吴胤伯廉杰张扬扬
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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