Analysis of Dynamic Characteristics and Coordinated Control Strategies for Fuel Cell-Based Distributed Energy System

doi:10.16183/j.cnki.jsjtu.2024.529

Abstract

Abstract:

To address the challenges posed by cross-timescale electrothermal dynamic characteristics and the flexibility and stability requirements resulting from high renewable energy penetration in solid oxide fuel cell (SOFC)-based distributed energy systems, a distributed energy system incorporating SOFCs is proposed. First, an innovative SOFC-assisted peak regulation control strategy is designed based on an analysis of SOFC electrothermal dynamic characteristics across different timescales. Then, the electrothermal dynamic responses and coordinated operation under varying load fluctuations are explored using the Simulink simulation platform. The results indicate that thermal maintenance effectively reduces the thermal inertia of SOFCs, thereby enhancing peak regulation capability and operation stability. The proposed control strategy ensures safe operation while meeting electrothermal demands, providing a theoretical basis for the regulation and stability of SOFC-based distributed energy systems.

Key words: solid oxide fuel cell (SOFC), distributed energy system, dynamic response, control strategy

CLC Number:

TM911.42

YANG Lu, LI Songyi, XU Jialing, LIU Zuming. Analysis of Dynamic Characteristics and Coordinated Control Strategies for Fuel Cell-Based Distributed Energy System[J]. Journal of Shanghai Jiao Tong University, 2026, 60(7): 1194-1206.

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名称	容量配置	安全限制
风力机	额定功率:8.3 kW	v_i=3 m/s,v_r=15 m/s, v_o=30 m/s
光伏	装机容量:8.5 kW
SOFC	电池片数:50	I_p≤I_SOFC≤I_L,I_L=200 A
锂电池	单体容量:4.86 kW·h	-30 kW<P_Li<30 kW, 20%≤S_soc≤90%
蓄热罐	蓄热温度:60 ℃	h_min<h_te<h_max,T_te<373 K

名称	配置	安全限制
风力机	额定功率:10 kW	v_i=3 m/s,v_r=11 m/s, v_o=30 m/s
光伏	装机容量:120 kW
SOFC	电池片数:300	I_p≤I_SOFC≤I_L,I_L=200 A
锂电池	48 V,3 A·h,100组, 串:14,并:10	-30 kW <P_Li<30 kW, 10%≤S_soc≤95%
蓄热罐	蓄热温度:60 ℃	h_min<h_te<h_max, T_te<373 K