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Small signal modeling of naturally clamped soft-switching current-fed dual active bridge dc/dc converter and control design using Cypress PSoC

  • National University of Singapore

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A detailed small signal analysis and a closed loop control design of naturally commutated current-fed dual active bridge (CFDAB) dc/dc converter are presented. Proposed converter is suitable for fuel cell vehicle between traction inverter and batteries. State-space averaging technique is used to derive the small signal model. A closed two-loop controller is designed and implemented on mixed signal processor Cypress PSoC 5. A complete design procedure is presented. Experimental waveforms from a 250W prototype with the designed controller are illustrated to verify the stability of the control system. Experimental results for step changes in load clearly show satisfactory transient performance of the converter and validate closed design. It is suitable for energy storage, interfacing two dc buses of different voltages in DC microgrid, and solar power system to boost low voltage up to peak of the utility voltage.

Original languageEnglish
Title of host publication2014 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479963737
DOIs
StatePublished - 12 Feb 2014
Externally publishedYes
Event2014 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2014 - Mumbai, India
Duration: 16 Dec 201419 Dec 2014

Publication series

Name2014 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2014

Conference

Conference2014 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2014
Country/TerritoryIndia
CityMumbai
Period16/12/1419/12/14

Keywords

  • Control
  • Current-fed DAB converter
  • Natural clamping
  • Small signal model
  • Snubberless
  • Soft-switching

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