燃料電池外文文獻(xiàn)翻譯--一種用于滿足脈沖電源需要的可控燃料電池（混合電源）

1、英文原始資料翻譯：1.英文原始資料An actively controlled fuel cell/battery hybrid to meet pulsed power demandsAbstractThis paper presents the experimental results of an actively controlled fuel cell/battery hybrid power source topology

2、that can be widely used in many applications, such as portable electronic devices, communication equipment, spacecraft power systems, and electric vehicles,in which the power demand is impulsive rather than constant. A

3、step-down DC/DC power converter is incorporated to actively control the power flow between the fuel cell and the battery to achieve both high power and high energy densities. The results show that the hybrid power sourc

4、e can achieve much greater specific power and power density than the fuel cell alone. This paper first demonstrates that an actively controlled hybrid with a 35Whydrogen-fueled polymer electrolyte membrane fuel cell and

5、 a lithium-ion battery pack of six cells yielded a peak power of 100W, about three times as high as the fuel cell alone can supply, while causing a very limited (10%) weight increase to the whole system. After that, ano

6、ther hybrid source using a different battery array (eight cells) was investigated to further validate the control strategy and to show the flexibility and generality of the hybrid source design. The experimental data sh

7、ow that the hybrid source using an eight-cell battery supplied a peak power of 135W, about four times that of the fuel cell alone. Finally, three power sources including the fuel cell alone and the two hybrids studied we

8、re compared in terms of specific power, power density, volume, weight, etc. The design presented here can be scaled to larger or smaller power capacities for a variety of applications.© 2003 Elsevier B.V. All rig

9、hts reserved.Keywords: Hybrid power source; Lithium-ion battery; Polymer electrolyte membrane fuel cell; Power converter1. Introduction Many applications, such as portable electronic devices,communication equipment, sp

10、acecraft power systems, and electric vehicles, have a common characteristic in their load profiles. That is, they have a high ratio of peak power to average power. Fuel cells (e.g. PEM fuel cells) are considered to be t

11、he most promising alternatives among next generation energy devices due to their high energy density and clean energy [1,2]. However, limited by their inherent characteristics, fuel cells have a long start-up time (usu

12、ally several minutes) and poor response to instantaneous power demands. The experimental system of the active fuel cell/ battery hybrid, illustrated above in Fig. 1, was built using a hydrogen-fueled polymer electrolyte

13、membrane fuel cell manufactured by H-Power with a nominal power capacity of 35W and nominal 24V open-circuit voltage, and Sony US18650 lithium-ion batteries with a nominal capacity of 1400 mAh per cell. A step-down DC/DC

14、 power converter was constructed using a synchronous rectifier, as shown in Fig. 2. Two MOSFETs were adopted in this construction and were operated synchronously and complementarily. Using an active switch instead of a

15、 passive diode decreases the conductance loss dramatically and thus improves the converter efficiency; therefore, this topology is more and more commonly adopted in low-voltage power supplies.A real-time digital control