燃料电池并网控制策略研究  

Research on the control strategy to connect fuel cells with power grid

作　　者：杨伟[1] 林弘[1] 赵虎[1] 

机构地区：[1]南京理工大学动力工程学院,江苏南京210094

出　　处：《电力系统保护与控制》2011年第21期132-137,共6页Power System Protection and Control

摘　　要：针对传统的燃料电池并网控制方法对改善系统动态性能的不足之处,建立PEMF(C Proton Exchange Membrane Fuel Cell)燃料电池发电系统中DC/DC升压变换器和逆变器的模型。提出了燃料电池系统并网的控制策略,利用内外双闭环控制方法,使得逆变器输出达到系统要求。建立了仿真系统的模型,并给出了燃料电池节点在网络方程中的处理方法。对系统三相短路故障、电压跌落、负荷突变等情况进行了数值仿真,结果表明所提出的燃料电池并网控制策略在三相短路故障、电压跌落、负荷突变等情况下,能够使得含燃料电池的系统稳定运行,并能动态跟踪系统的功率输出情况。Because the traditional control method about connecting fuel cells with the power grid has the disadvantage of slow dynamic response, this paper constructs the model of DC/DC boost converter and inverter in PEMFC （Proton Exchange Membrane Fuel Cell） power generating system, and offers a new control strategy to control fuel cells system with power grid. The double closed-loop control method is adopted, which makes the output of the inverter meet the requirement of the system. The paper also builds the model ofsimulation system, and the handling ofthe fuel cells nodes in network equation is also given. The numerical simulation ofthe system in the conditions of three-phase short-circuit fault, voltage dip and mutational load proved under certain faults, such control strategy can run the fuel cells system steadily, as well as track the dynamic output of the system smoothly.

关 键 词：燃料电池 并网控制策略 三相短路 数值仿真 系统稳定 

分 类 号：TM911.4[电气工程—电力电子与电力传动]