Journal
IEEE CONTROL SYSTEMS LETTERS
Volume 5, Issue 3, Pages 863-868Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCSYS.2020.3006398
Keywords
Randomized algorithms; power electronics; hybrid systems
Categories
Funding
- JSPS KAKENHI [18K13237]
- Grants-in-Aid for Scientific Research [18K13237] Funding Source: KAKEN
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This study models the dynamics of DAB converters using a hybrid automaton approach and designs a current stress policy using a randomized computation method. The results indicate that the quadruple-phase-shift method performs better in terms of current stress.
This letter addresses the current stress policy design in the Dual-Active-Bridge (DAB) converters with the randomized computation approach. First, a hybrid automaton approach is applied to model the dynamics of the DAB converter. Then the optimal feedback policy of a quadruple-phase-shift is obtained via solving a peak current minimization problem with DAB converter dynamics and transferred power constraints. A randomized optimization approach is applied to solve the problem. The proposed control scheme is validated by numerical simulation and compared with the traditional double-phase-shift and triple-phase-shift policies. The simulation results verify that the proposed quadruple-phase-shift method has better performance regarding the current stress.
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