公开(公告)号：EP1314233A4

公开(公告)日：2005-03-16

申请号：EP01964086

申请日：2001-08-17

Applicant: ABB INC

Inventor： JUNGREIS AARON M ,  BAPAT VINOD

IPC: H01M8/04 ,  H01M16/00 ,  H02J1/10 ,  H02J7/34 ,  H01M8/00 ,  H02J1/12 ,  H02J7/00 ,  H02J9/06 ,  H02M1/16

CPC classification number: H02J1/10 ,  H01M16/003 ,  H02J7/34 ,  Y10T307/344 ,  Y10T307/516 ,  Y10T307/625

Abstract: A high efficiency power conditioner interfaces a load to a fuel cell (10) that produces a low voltage that varies with the load. A dc-to-ac inverter (16) operates with a low voltage input provided by a dc bus (14). When a positive step load change occurs, a low voltage battery (22) provides power equal to the step change until the fuel cell (10) is able to provide enough power to support the entire load. The power from the battery (22) is supplied to the varying dc bus (14) through a boost converter (12). This boost converter allows full control of the battery power, so that the power drawn from the fuel cell can be gradually increased as the ability of the fuel cell to provide the full required load power is gradually increased. When very large positive load step changes occur, the battery can feed power to the dc bus through diode D1, rather than through the boost converter.

Abstract translation: 功率调节器将负载连接到产生随负载变化的低电压的燃料电池10。 直流到交流逆变器16利用由直流总线14提供的低电压输入进行工作。当发生正的步进负载变化时，低电压电池22提供等于阶跃变化的功率，直到燃料电池10能够提供 足够的电力来支持整个负载。 来自电池22的电力通过升压转换器12被提供给变化的直流总线14.当发生非常大的正负载阶跃变化时，电池可以通过二极管D1而不是通过升压转换器将功率馈送到直流母线。 二极管D1不需要使用，但它的使用允许升压转换器的大小适用于常见的负载变化，而不是最大可能的负载变化（例如在故障输出期间可能看到）。 降压转换器将直流总线14上的可变电压转换成电池的适当的浮充电压。 降压转换器还可以从燃料电池供应辅助设备的电力。 如果燃料电池不能提供辅助电源（例如在启动或负载瞬变期间），则辅助电源可以直接从电池中进入。