Controller for solid oxide fuel cell (SOFC) system

Abstract

The invention discloses a controller for a solid oxide fuel cell (SOFC) system, which comprises a digital core circuit, a communication interface circuit, an input conditioning circuit, an output drive circuit and a voltage-stabilized source circuit, wherein the digital core circuit is connected with the output end of the voltage-stabilized source circuit, the input end of the input conditioning circuit and the input end of the output drive circuit respectively; the output end of the communication interface circuit is in network connection with a main controller of the SOFC system through a CAN bus; the output end of the input conditioning circuit is connected with the sensor of the functional unit of the SOFC system; the output end of the output drive circuit is connected with the actuator of the functional unit of the SOFC system; and the functional unit is an electric pile unit, an air supply unit, a fuel supply unit, a tail gas recovery unit or an electricity management unit. According to the complex control task characteristic of the SOFC system, the controller with complete functions is designed, so as to serve a universal controller for all the functional units of the SOFC system and meet the controller hardware requirement of SOFC system development and application.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, more precisely, it belongs to the technical field of solid oxide fuel cell system control. Background technique [0002] The solid oxide fuel cell (SOFC) system is a power generation system that mainly uses hydrogen as fuel to directly convert chemical energy into electrical energy through electrochemical reactions. It has the advantages of high power generation efficiency, quietness, noiselessness, environmental friendliness and low emissions. The most promising green power generation system in the 21st century. In the past ten years, many developed countries in the world, such as the United States, Germany, and Japan, have invested a lot of money and manpower in the development of SOFC systems, promoting the development of SOFC technology, and the goal is to achieve commercialization. However, the SOFC system itself has a series of characteristics such as thinness and brittleness, high cost...

AI Technical Summary

Problems solved by technology

[0005] At present, the existing hardware based on PowerPC555 single-chip microcomputer in the market is a common control board, the structure is generalized, the pertinence is not strong, and it lacks a complete input and output peripheral interface, which is difficult to meet the actual needs of the SOFC system with complex control algorithms and various input and output forms.

However, most of the existing fuel cell-based controllers are designed for low-temperature fuel cell systems such as automotive fuel cells. Solid oxide fuel cell systems are different from other fuel cell systems in terms of working mechanism, input and output characteristics, and control requirements. Therefore, the existing fuel cell controller is also difficult to meet the SOFC system control task requirements

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