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Title: Multiphase soft switched DC/DC converter and active control technique for fuel cell ripple current elimination

Patent ·
OSTI ID:986567
 [1];  [2];  [3]
  1. Blacksburg, VA
  2. Sunnyvale, CA
  3. Salem, VA
+ Show Author Affiliations

DC/DC converter has a transformer having primary coils connected to an input side and secondary coils connected to an output side. Each primary coil connects a full-bridge circuit comprising two switches on two legs, the primary coil being connected between the switches on each leg, each full-bridge circuit being connected in parallel wherein each leg is disposed parallel to one another, and the secondary coils connected to a rectifying circuit. An outer loop control circuit that reduces ripple in a voltage reference has a first resistor connected in series with a second resistor connected in series with a first capacitor which are connected in parallel with a second capacitor. An inner loop control circuit that reduces ripple in a current reference has a third resistor connected in series with a fourth resistor connected in series with a third capacitor which are connected in parallel with a fourth capacitor.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-02NT41567
Assignee:
Virginia Tech Intellectual Properties, Inc. (Blacksburg, VA)
Patent Number(s):
7,518,886
Application Number:
11/249,945; TRN: US201017%%409
OSTI ID:
986567
Country of Publication:
United States
Language:
English

References (9)

Analysis and design considerations of a load and line independent zero voltage switching full bridge DC/DC converter topology journal September 2002
An improved full-bridge zero-voltage-switched PWM converter using a saturable inductor journal October 1993
Interactions Between Fuel Cells and Power Converters: Influence of Current Harmonics on a Fuel Cell Stack journal March 2007
A critical evaluation of high power hard and soft switched isolated DC-DC converters
  • Aydemir, M. T.; Bendre, A.; Venkataramanan, G.
  • 2002 IEEE Industry Applications Society Annual Meeting, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344) https://doi.org/10.1109/IAS.2002.1042731
conference January 2002
Fuel cell based domestic power supply-a student project
  • Monti, A.; Santi, E.; Ponci, F.
  • PESC 2002 - Power Electronics Specialists Conference, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) https://doi.org/10.1109/PSEC.2002.1023888
conference January 2002
A soft-switched, full-bridge boost converter employing an active-clamp circuit conference January 1996
Development of an equivalent circuit model of a fuel cell to evaluate the effects of inverter ripple current conference February 2004
Analysis for the Effect of Inverter Ripple Current on Fuel Cell Operating Condition journal May 2003
A zero-voltage and zero-current switching full bridge DC-DC converter with transformer isolation journal September 2001

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Related Subjects

30 DIRECT ENERGY CONVERSION
CAPACITORS
FUEL CELLS
RESISTORS
SWITCHES
TRANSFORMERS