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Mitigation of Dead-Time Effects on Transient DC Bias Elimination in Dual Active Bridge Link Current
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| Author(s) |
Mk Kharabela MOHANTA |
| Abstract |
Transient DC bias elimination in the link current of the dual active bridge DC-DC converterunder power transients including dead-time effect is investigated in this paper. When a powerchange command is given to a dual active bridge, the modulation instants should be adjusted inan adequate manner in order to avoid over current during transients. The paper summarizes theadverse effect of the dead-time in applying DC-bias elimination techniques by dividing the entireoperating region into six different zones based on operating phase angles and in terms of deadtime. An improved compensation method (based on pre-, post- transition current waveformcomputation) to mitigate the dead-time effect is suggested. A detailed mathematical analysisis carried out to select the suitable switching instants. The proposal is demonstrated throughsimulation studies and through experimental verification. |
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| Filename: | 0106-epe2022-full-11063178.pdf |
| Filesize: | 3.21 MB |
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| Type |
Members Only |
| Date |
Last modified 2023-09-24 by System |
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