Study on the influence of segmented fuel cell by grooving method and its application in oxygen starvation diagnosis

Chen, Huicui; Shan, Wanchao; Zhang, Tong; Pei, Pucheng; Deng, Chenghao; Chen, Jinrui

doi:10.1016/j.ijhydene.2021.10.082

Cited by 11 publications

(1 citation statement)

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“…There have limitations to fault diagnosis and isolation on the PEMFC system that fault modes in conventional research are defined in advance. Some faults are caused by artificially setting inappropriate operating temperatures, [ 24 ] insufficient reaction gases, [ 25 ] and changing structural parameters [ 26 ] according to the electrochemical reaction principle of PEMFC, but other faults may be caused by aging of subsystem components or measurement offsets which cannot be subjected to traditional fault diagnosis strategies. For example, the PEMFC system is operating at an abnormal temperature due to problems with sensors and actuators in the TMS.…”

Section: Introductionmentioning

confidence: 99%

Fault Diagnosis and Fault‐Tolerant Control Method for a Multistack Fuel Cell Thermal Management Subsystem

et al. 2023

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Multistack fuel cell systems (MFCS) are promising developments of fuel cell technology. For MFCS, faults affect durability and stability, and appropriate fault diagnosis methods and control strategies need to be proposed for different multistack structures. Herein, the integrated MFCS thermal management subsystem (TMS), which is based on the optimized split‐stack approach, is first studied, and its possible sensor and actuator faults are analyzed. The sensor fault signal is corrected based on the unscented Kalman filter (UKF), the controller design under the hardware in the loop platform is carried out, and an active fault‐tolerant control (FTC) strategy based on sliding mode control is deployed for the TMS to enable it to recover its performance quickly and effectively in case of faults. The results show that the estimated values are closer to the true values after using the UKF on the sensor signals, avoiding the impact of sensor faults on the system performance. Under New European Driving Cycle dynamic conditions, the FTC controller also exhibits better control compared to the conventional proportional–integral controller, with smaller maximum overshoot and shorter system recovery and stabilization time in the event of a TMS fault, mitigating the impact of system fault on performance.

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Section: Introductionmentioning

confidence: 99%