【作者】

Jiqing He，PL Zhou，David Clelland

【摘要】

论文已在中国上海举行的2013年CIMAC大会上发表，论文的版权归CIMAC所有。In order to comply with the increasingly stringent emission regulation from shipping, engine developers and researchers have put tremendous effort to develop high efficient and low emission ship power systems. Fuel cell power systems offer high efficiency and almost zero emission which meet the target of marine power system development. This paper presents a hybrid ship power system with the combination of a solid oxide fuel cell (SOFC) and a micro gas turbine(MGT). In a SOFC fuel cell, the chemical energy contained in the fuel is converted directly into electricity and high temperature exhaust gases where the thermal energy can be further extracted for electricity generation by the use of micro gas turbines (MGT). The hybrid technology can achieve an efficiency as high as 80 per cent and its emission is very low. However, working as a marine power provider onboard ship, this technology still has some challenges to tackle due to onbarod working conditions and environment. In addition to the challenges of meeting the requirements and functioning properly as a ship propulsion system, a great difficulty lies in the control strategy of the hybrid system to balance power generation from the SOFC's chemical reaction and the MGT's rotation. By using Matlab/Simulink software, both SOFC fuel cell and MGT subsystems, including SOFC electrochemical, fuel(natural gas) reformer, heat exchanger and turbine system have been modelled. Based on the developed mathematical models, the control strategy for the hybrid power systems is presented. A control strategy of key parameters and the power sharing between the two power sources of SOFC and MGT is proposed as well. The simulation results demonstrate that the control strategy is able to control the SOFC and MGT subsystems' operation effectively as well as safely.

【会议名称】

第27届CIMAC会议

【会议地点】

上海

【下载次数】

1

返回