Oscillation control and optimization method of SOFC system caused by water vapor flow oscillation

Abstract

The invention relates to the technical field of steam external reforming solid oxide fuel cells, in particular to a SOFC system oscillation control and optimization method caused by water vapor flow oscillation. It includes the following steps: modeling the SOFC system for external reforming of water vapor; simulating and analyzing the state of water vapor flow oscillation; introducing an oscillation control algorithm based on fuzzy control, and proposing a control and optimization strategy; analyzing the optimization effect according to the simulation experiment results and apply. The design of the present invention builds a water vapor oscillation model, does not need to frequently perform discharge experiments on the SOFC system, and avoids causing system failures; separately designs single / double input fuzzy controllers, and can control the temperature and voltage in the SOFC system by simulation. A reasonable range can realize the control of system oscillation; design fuzzy control rules and control strategies to realize real-time tracking of the set value and prevent the propagation of oscillation in the SOFC system, thereby optimizing the performance of the system.

Description

technical field [0001] The invention relates to the technical field of steam external reforming solid oxide fuel cells, in particular to a SOFC system oscillation control and optimization method caused by water vapor flow oscillation. Background technique [0002] When researching solid oxide fuel cells (SOFCs) with external steam reforming, the occurrence and propagation of oscillations during SOFC power generation are very common in SOFC systems. Severe oscillations can cause the system to malfunction and not work properly. Therefore, measures must be taken to eliminate or reduce the impact of oscillation on the SOFC system, so that the system can generate stable and normal power and maintain a healthy working state. The simplest and most appropriate way is to control and optimize the root cause of the oscillation after successfully locating the root cause of the system oscillation, so as to prevent the propagation of the oscillation in the system. [0003] In previous s...

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Problems solved by technology

[0004] Based on the SOFC independent power generation system in the existing research, frequent discharge experiments on the SOFC system may not only cause the SOFC system to malfunction and make the SOFC power generation system unable to work normally, but also directly oscillate on the system due to the long test period. control is inappropriate

However, there is no method to study and apply to control and optimize the SOFC system oscillation caused by the water vapor flow oscillation without damaging the SOFC power generation system.

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