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Power balance control and voltage conditioning for fuel cell converter with multiple sources

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9 Author(s)
Liu, C. ; Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA ; Nergaard, T. ; Leslie, L. ; Ferrell, J.
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Due to the long time-constant of the fuel cell, the generated power and load become unbalanced under dynamic conditions, resulting in control difficulty for a front-end DC-DC converter. To maximize the fuel cell output power, a current control is employed; however, the DC bus voltage becomes unregulated. Thus, a voltage conditioner utilizing a battery source is proposed to balance the power and stabilize the DC bus voltage. Control design for the front-end DC-DC converter and voltage conditioner are presented. Based on the design, simulation is performed and the results are shown to verify the control strategy

Published in:

Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual  (Volume:4 )

Date of Conference:

2002