{'fraction_non_alphanumeric': 0.01954022988505747, 'fraction_numerical': 0.0, 'mean_word_length': 5.5, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Simulation and Control for Load Change Process on a Solid Oxide Fuel Cell

This paper addresses the dynamic characteristics of SOFC with an emphasis on control strategy development for optimized temperature control during load change. A methodology on regulating fuel utilization (Uf) and air excess ratio (λ) is investigated to validate alleviation of temperature fluctuation. An integrated dynamic model of SOFC, composed of mass balance, temperature balance, and electrochemistry, collaborates with Model Predictive Controller (MPC) in MATLAB/Simulink to verify the dynamic characteristic during load change process in the paper. A variable λ strategy is proposed and compared with traditional fixed λ strategy. Simulation results show the variable λ strategy can reduce the temperature variation for a safe operation, in comparison with that by the fixed λ strategy.