Abstract
In this article, a current balancing coupled inductor (CBCL) based asymmetrically configured quad-active-bridge (QAB) converter is proposed. The QAB converter provides high-frequency isolation for a dc-dc stage of a solid state transformer (SST), as well as provides a modular solution to the SST medium-voltage (MV) dc link. The proposed CBCL ensures current balancing among/three active H-bridges without using any dedicated controller and without expensive sensors when transferring equal power from MV to low-voltage side. The proposed CBCL is the integration of three inductors of the active H-bridges required for power transfer and zero-voltage-switching and does not require an extra magnetic volume. Experimental results are presented to validate the performance.
Original language | English |
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Article number | 9419759 |
Pages (from-to) | 12528-12539 |
Number of pages | 12 |
Journal | IEEE Transactions on Power Electronics |
Volume | 36 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2021 |
Keywords
- CBCL
- current balance
- current balancing coupled inductor (CBCL)
- imbalanced current
- QAB converter
- quad-active-bridge (QAB)
- solid-state-transformer (SST)