Integration of fuel cell stack with an inverter is complex in nature. A number of factors have to be taken into account in designing the inverter as well as during the integration. One of these factors is ripple curre...Integration of fuel cell stack with an inverter is complex in nature. A number of factors have to be taken into account in designing the inverter as well as during the integration. One of these factors is ripple current which could affect the life of the fuel cell stack if there is fuel and/or oxidant starvation. In this paper an inverter topology is investigated which significantly reduces or even nullifies the ripple content in the fuel cell system. The investigations have been carried out using indigenously developed 1 KW PEMFC stack and a 4 kW PEMFC stack with single and multi phase inverter. The results are presented here.展开更多
针对十二相永磁无刷电动机构建了基于三电平逆变器的调速系统。系统采用转速电流双闭环控制,设计了基于CAN(controller area network)总线技术的主从控制系统,实现四个逆变单元的协调控制,从而保证系统的稳定运行。提出了基于三电平逆...针对十二相永磁无刷电动机构建了基于三电平逆变器的调速系统。系统采用转速电流双闭环控制,设计了基于CAN(controller area network)总线技术的主从控制系统,实现四个逆变单元的协调控制,从而保证系统的稳定运行。提出了基于三电平逆变器供电的无刷直流电动机PWM(pulse width modulation)调制算法,该算法不仅较好的实现了电机的控制性能,同时还解决了三电平逆变器电容电压中点平衡问题。展开更多
文摘Integration of fuel cell stack with an inverter is complex in nature. A number of factors have to be taken into account in designing the inverter as well as during the integration. One of these factors is ripple current which could affect the life of the fuel cell stack if there is fuel and/or oxidant starvation. In this paper an inverter topology is investigated which significantly reduces or even nullifies the ripple content in the fuel cell system. The investigations have been carried out using indigenously developed 1 KW PEMFC stack and a 4 kW PEMFC stack with single and multi phase inverter. The results are presented here.
文摘针对十二相永磁无刷电动机构建了基于三电平逆变器的调速系统。系统采用转速电流双闭环控制,设计了基于CAN(controller area network)总线技术的主从控制系统,实现四个逆变单元的协调控制,从而保证系统的稳定运行。提出了基于三电平逆变器供电的无刷直流电动机PWM(pulse width modulation)调制算法,该算法不仅较好的实现了电机的控制性能,同时还解决了三电平逆变器电容电压中点平衡问题。
